The h Bar

Bernardo Meurer

12:49 AM

@BalarkaSen Holy shit, Byrne's new album is amazing

Balarka Sen

i FUCKING TOLD YOU

Rumplestillskin

Does it make sense in Hamiltonian dynamics in the following situation: If you have a Hamiltonian H = -1 + x/c^2. Does it make sense to define a new Hamiltonian H* = (H+1)/c^2 = x??? So basically can I scale by c^2 in such way?

Bernardo Meurer

@BalarkaSen yes, yes you did

Also

Are you going to read my fucking essay

You're the only person who understands the batshit crazy crap I produce

Balarka Sen

Gib link

Bernardo Meurer

One sec

@BalarkaSen send.firefox.com/download/3f4ecfca61/#rjwpNToF6h7AHKdSruva4w

Only good for 1 DL

Balarka Sen

12:54 AM

Downloading

Secret

0

Q: Is there anywhere online where I could simulate the schrodinger equation with different Hamiltonian's?

I have a code which simulates the Schrodinger equation and it works good for the harmonic potential, I have checked that. Now, i have changed the Hamiltonian, I have the results but I want to compare them with a good working simulation result to know if my simulation is correct. Is there somethin...

Balarka Sen

Got it

Secret

What does he mean? The SE is just a PDE, thus changing the hamiltonian is the same as changing the terms in the PDE and rerunning the simulation?

Bernardo Meurer

@BalarkaSen Mostly just see if there's some part that lacks clarity/depth. Also, section 3 is there just because I needed to analyze Gullier's Travels somehow :P

For the damn class

Cows

Have an interview tomorrow with my peeps at Yahoo

At this point not nervous. Need to prep all night

Secret

12:58 AM

yesterday, by Emilio Pisanty

For the chemists out there

Sir Cumference

Please tell me there's a way to take an antiderivative and not get a constant

Some trickery or nonsense that works

Secret

People need to realise that us chemists are not just drug making people, unless by chemist, you mean pharmacists, then, that is true then

Bernardo Meurer

@SirCumference What do you mean "And not get a constant" ?

Sir Cumference

@BernardoMeurer of integration

Bernardo Meurer

You want to take a primitive that doesn't yield the + C?

Sir Cumference

12:59 AM

Yes

Make my homework better

Bernardo Meurer

Of course not

Sir Cumference

Ik ;-;

Secret

but all indefinite integrals must have a C

Bernardo Meurer

@Secret He knows

Secret

unless you can somehow stuff limits in

Balarka Sen

1:00 AM

@BernardoMeurer Ok I'm reading it

(Tachyon)

Bernardo Meurer

@SirCumference Write at the top "Throughout these solutions C, the integration constant resulting from the derivative of a constant always being 0, is assumed to be 0 for simplicity"

@BalarkaSen Ta-ta-ta-chyon

@BalarkaSen Exmilitary still is my favorite album

Specially Beware

Balarka Sen

Beware is my favorite track from them

Bernardo Meurer

Yeah

Same

Balarka Sen

1:03 AM

"a Turing machine T is a 9-tuple[8]"

very good aesthetic

Bernardo Meurer

Ha

I hadn't noticed that

Balarka Sen

Definition 1.1. is a lot to unpack for a mortal. Hmmm

Oh I see

You describe $\delta$ right below

Bernardo Meurer

Ye, $\delta$ is the bitch, so I thought giving it some extra attention would help

Crap, Def. 1.2. item 2 has bad spacing

Balarka Sen

@BernardoMeurer So the right picture for the Turing machine is a tape of countably infinite length (with a countable infinite alphabet written on it in any possible order) with a choice of origin shifts of which measure the state of the tape, yes?

Is that the right way to conceptualize it?

Cows

I have to master Broccoli real fast

Balarka Sen

1:17 AM

So what $\delta$ is going to do is, it would take account to the state $\alpha$ of the tape, so let's call $\delta_\alpha(-) = \delta(\alpha, -)$. Then for any tape alphabet $\beta$, $\delta_\alpha(\beta)$ is a movement of the tape from some alphabet $\kappa$ on it so that it changes it's state from $\alpha$ to $\phi$.

Cows

don't think i really need it for tomorrow though hmm

Balarka Sen

(Taking into account which direction it moved; it's a linear object so only left/right matters)

So $\delta_\alpha(\beta)$ is literally representative of a change of state of the tape from $\alpha \to \phi$.

Hence "transition function"

I'm a bit confused about the significance of $\kappa$

Bernardo Meurer

@BalarkaSen My bad, had to tend to something

Balarka Sen

No worries

Bernardo Meurer

@BalarkaSen Here's how I think of a TM: A transition function $\delta$ is a machine, think of a box with a slot that allows a tape to pass through it. There's an infinite tape, divided in cells. The machine/box looks at what's on it's current cell, and then does something, which is to write something on the tape, and then either move right/left or halt, i.e. finish.

There's two alphabets, the tape alphabet, which are all the symbols that can be on the tape, and the machine alphabet, which are all the symbols that the machine can write

Usually the alphabets are only separate by 2 symbols, the blank, and the left-end marker

Some definitions of a TM use a doubly-infinite tape, and allow the machine to write blanks, in which case the tape and machine alphabets are the same

Balarka Sen

1:29 AM

When you say write something, you mean it writes a (machine) alphabet onto that cell which is in the box (the one $\delta$ operates on)?

Bernardo Meurer

Yep

Exactly

Balarka Sen

OK

This is good

Bernardo Meurer

@BalarkaSen This is a famous representation, that I kind of like :)

Balarka Sen

Mhm.

Er, well, so it changes the content of the cell, really? It sees $\beta$ written on the cell and changes it to $\kappa$, according to your notation

Remove-and-write

Bernardo Meurer

Yep

Balarka Sen

1:34 AM

Alright, good machine

Bernardo Meurer

I've heard it referred to as changing the state of the cell. If you define the state of a cell as being the item of the alphabet it contains

Balarka Sen

That's a meaningful terminology.

You write $\alpha$ (an element of $Q$) for the state of the machine and $k$ (an element of $\Bbb N$) for the position of the machine on the tape in Definition 1.2. Firstly, I think you have a chosen "standard position" of the machine on the tape from which you are measuring this position-change

Secondly, it's unclear to me what $\alpha$, conceptually, is. I was thinking of it as the position ($k$), actually

Bernardo Meurer

@BalarkaSen Yeah, the position $k$ is cell-distance from the left-delimiter cell in this model, i.e. the cell in the state $\triangleright$

Balarka Sen

Oh yeah forgot your thing is not bi-infinite

It's all good then

Bernardo Meurer

@BalarkaSen A more throughout definition can be found here: cs.cornell.edu/courses/cs4820/2010sp/handouts/turingm.pdf

Balarka Sen

1:42 AM

Dank.

Oh I see the state doesn't just depend on position. It's an in-machine thing. After each transition it changes state according to some specific rule.

Bernardo Meurer

Yeah

Balarka Sen

This is some next level abstraction

I like this shite

Bernardo Meurer

Yeah, TM's are amazing

You'll like lambda calculus

Balarka Sen

Ok your definition of a computation is just what a normal human being would think it is

Start with $(\triangleright, s, 0)$, move inductively from $(\beta_i, \alpha_i, k_i)$ to $(\beta_{i+1}, \alpha_{i+1}, k_{i+1})$.

@BernardoMeurer Oh I have seen some of that before.

Bernardo Meurer

Yeah, computation is just what you'd expect

Balarka Sen

1:48 AM

Are there examples of decidably uncountable problems for a given (or all??) Turing machines?

Something something Chaitin's constant

Bernardo Meurer

@BalarkaSen What do you mean by decidably uncountable? You mean problems that are computable but only given infinite time?

If so, I don't know of any out the top of my head

Balarka Sen

I mean problems that are not computable but provably so

Bernardo Meurer

Ah, yes

The halting problem

Is the most famous one

My favorite is the Busy Beaver function

also non-computable

And many others

Balarka Sen

Cool!

Bernardo Meurer

In general problems regarding the behavior of a turing machine will end up being non-computable

Which is why people make some languages (eBPF for example) willingly non-Turing complete, so that you can actually make generalized analysis/conclusions of it's behavior

Balarka Sen

1:53 AM

I see

@BernardoMeurer Strange, given the existence of a universal Turing machine

Bernardo Meurer

For e.g. in a TM, the problem of "Given any input, will this machine ever not halt?" is non-computable -- you have to try all inputs -- but if it's non-turing complete you can effectively answer that

@BalarkaSen Look at the proof for the uncomputability of the halting problem, the same self-reference technique can be used to show the uncomputability of a lot of problems referring to the machine itself

Balarka Sen

Reminds me of the proof of Godel's incompleteness theorem using Tarski schema

Bernardo Meurer

Ha, I haven't gone through that proof yet

Balarka Sen

I have an old note saved up somewhere

lol found it. it's one page and incomprehensible to the present me

@BernardoMeurer Great, so finally NP-completeness vs P-completeness makes sense

Bernardo Meurer

@BalarkaSen WOHOO

Balarka Sen

2:01 AM

The great conjecture is that NP-complete problems (decidably polynomial-time, but the degree of the polynomial is whatever) are also P-complete (decidably takes O(n^p) time to solve for a known, fixed p), is that right?

Bernardo Meurer

@BalarkaSen Well, I wouldn't put it like that, I'd say the great question is whether NP-Complete problems are also P-Complete

But yeah, that's the problem

Balarka Sen

Makes sense. So the general consensus is that the answer to it is "obviously no"?

Bernardo Meurer

Nope

It's a huge fight

There's 3 groups basically

Balarka Sen

lmao

Bernardo Meurer

1. $\text{P} \neq \text{NP}$

2. $\text{P} = \text{NP}$

3. $\text{P}$ might be the same as $\text{NP}$, but iff there is such algorithm that solves NP-Complete problems in P-time, then it is definitely intractable/impractical

Balarka Sen

2:04 AM

Aha

Bernardo Meurer

(Page 8 has a brief description of tractability)

Balarka Sen

I'm reading it right now :)

Bernardo Meurer

Oh, some people think it's undecidable too

Balarka Sen

Fucking great

Wait, determining primality is in P?

Oh that famous algorithm

Bernardo Meurer

Nope

Recent proof

Quite amazing

Balarka Sen

2:08 AM

Agarwal-Kayal-Saxena

@BernardoMeurer ? You wrote it's in PSPACE

Bernardo Meurer

It's in PSPACE, but not P-Complete

Balarka Sen

Oh I see. What's the difference again?

Bernardo Meurer

@BalarkaSen Same as of NP-Complete (D.1.3 / P.8) but for PSPACE

All P-Complete problems are reducible to one another

Balarka Sen

Ah right I didn't understand 1.3

Dunno what Karp reduction is

Bernardo Meurer

Yeah, I forgot to talk about reduction :/

@BalarkaSen plato.stanford.edu/entries/computational-complexity/#RedNPCom

Balarka Sen

2:13 AM

Aha I see

Wow so what's the PSPACE problem which is not reducible to the problem of primality in (a deterministically) polynomial time?

Bernardo Meurer

Well, rather the question is "How can we reduce the Primality Test Problem to any problem in the P-Complete class?"

Which we don't know how

So we know PRIMES is in PSPACE, but we don't know whether it's in P-Complete

Balarka Sen

Oh I see.

Bernardo Meurer

BTW, if you're interested, I believe P=NP

Balarka Sen

lmao

diobuc eulb

sup my dudes

Balarka Sen

2:20 AM

\o

diobuc eulb

i was re-listening to the persefone album @BalarkaSen

is cool and good

Balarka Sen

I like their previous album, "Spiritual Migration" better

diobuc eulb

they're totally different

first one is more like chamber metal

is that even a thing

Balarka Sen

good terminology looool

Bernardo Meurer

@diobuceulb Balarka is reading a really bizarre article I wrote on the computability of comprehension from a Lacanian-Saussure perspective

diobuc eulb

2:25 AM

thanks for the update.

Balarka Sen

I am onto the Borromean ring section now, @Bernardo

diobuc eulb

i was wondering what he was up to.

Bernardo Meurer

@BalarkaSen That is is gnarly

Balarka Sen

@BernardoMeurer "link", not a "knot" (jesus), by the way

diobuc eulb

why is that paper cool

what did it do

Bernardo Meurer

2:27 AM

/me still doesn't know what the fuck the Real is supposed to be

Balarka Sen

Knot is a single connected circle. Link is a union of disjoint (embedded) circles.

Bernardo Meurer

Wait

diobuc eulb

@BernardoMeurer rational trigonometry

Bernardo Meurer

The borromean knot is not a knot?

diobuc eulb

don't worry bout it

Balarka Sen

2:28 AM

@BernardoMeurer lol, it's a link, yes.

Bernardo Meurer

@diobuceulb Idk if it's interesting or not, that's up to you to decide

@BalarkaSen Lol, I'll change to link and add a footnote

diobuc eulb

i didn't read it

Bernardo Meurer

Do you want to?

Balarka Sen

@diobuceulb It's interesting because it's an exposition on a vastly different set of subjects touching mathematical logic, computability and friends, and psychology (apparently?)

A paper doesn't need to do anything to be interesting

Bernardo Meurer

@BalarkaSen Yeah, the linguistic aspect of it, in a way

Philosophy of Language sorta

diobuc eulb

2:30 AM

all the subjects i don't like neatly gathered into one sentence.

Bernardo Meurer

You don't like computability?!

diobuc eulb

kidding i shall check it out but probably not make too much sense of it.

that was a reference but i won't say to what.

Bernardo Meurer

Uff

I was worried

Balarka Sen

@BernardoMeurer Mmkay, I'll have a more coherent summary of it by the end.

Bernardo Meurer

@BalarkaSen Yeah, it takes a while to actually make my point since it needs so much primer

@diobuceulb send.firefox.com/download/c5dad0033f/#3NUqYAM0T7908WhN310xpw

If you're interested

diobuc eulb

2:42 AM

thanks

Bernardo Meurer

@BalarkaSen That version has the footnote regarding it being a link, not a knot :P

Balarka Sen

Fantastic :P

diobuc eulb

@BalarkaSen check out superorganism

sometimes they're really bad but sometimes they're really good

also p weird

Secret

3:01 AM

So a few minutes ago, I was talking about spherical cows with some of my physics classmates. I then asked what happens if we actually found a spherical cow. He said

> That will profoundly change the way physics is done, for ww will would then have approximations being reality

We also discussed how a cow sized quantum particle will have very messy particle physics such as having an energy in the order of 10^20 TJ

diobuc eulb

@Cows

secret is calling you fat.

to first order

Secret

lolololol

:P

Bernardo Meurer

3:47 AM

@Secret You might enjoy my little write-up as well

vzn

5:05 AM

more on the joy/ wonder of undecidability... see also Computer Science =D vzn1.wordpress.com/2016/01/22/…

Sir Cumference

6:47 AM

@BernardoMeurer I thought it was P vs. NP

Bernardo Meurer

@SirCumference That's the name of the problem, yes

Which is to ask whether or not NP= NP

Sir Cumference

P versus NP problem

The P versus NP problem is a major unsolved problem in computer science. It asks whether every problem whose solution can be quickly verified (technically, verified in polynomial time) can also be solved quickly (again, in polynomial time). The underlying issues were first discussed in the 1950s, in letters from John Forbes Nash Jr. to the National Security Agency, and from Kurt Gödel to John von Neumann. The precise statement of the P versus NP problem was introduced in 1971 by Stephen Cook in his seminal paper "The complexity of theorem proving procedures" and is considered by many to be the...

Yep, it's vs. np

Bernardo Meurer

Yes

P vs. NP is the question

Which asks "Is P = NP or is P != NP"

The question and it's subject are disparate things

John Duffield

8:37 AM

I have a degree I Computer Science. I have worked with computers for decdes. But things like Turing machine and the P v NP problem do not float my boat. They do not light my fire. They do not tickle my fancy. But things like How Gravity Works do.

Physics Meta

0

Q: Which answer should we accept if multiple answers address the question?

If a question I asked gets answered by multiple users. And all of them solve the question, which answer should I accept? Should it be the one that was posted first (first come first served)? Should it be the one that is the longest (cause the user put in more effort)? Should it be the one tha...

discussion

Physics Meta

10:22 AM

0

Q: I request to write reason if you are marking a question as duplicate to other question

I actually asked a question named "Why not Sun's force change angular momentum of Earth?". Then 'QMechanic', a user of this website marked my question as duplicate to "Tidal Effect due to Sun". So I searched whether my question is duplicate, but tidal effect is very different to what I expected. ...

discussion

John Rennie

10:45 AM

@Qmechanic re this question I think the OP has a point and his question isn't a duplicate.

Manolis Lyviakis

11:07 AM

fast question

suppose i want to calculate the E of the infinite sheet

and cause of symmetry

i use gaussian surface of a cylinder

but that gaussian cylinder does not enclose ALL the Q

so what i have calculated is the E from just the enclosed Q and no the whole sheet?

it shoould be a function

of the size of the cylinder

but actually is not

so im good

its just a function of the density

BUT if it was a function of the size of the gaussian surface

then we wouldnt be able to talk about the E of the whole infinite plate

Tanuj

@JohnRennie Hi ! Good morning :)

Qmechanic

@JohnRennie : Could you try to improve the question to emphasize how it is different? For starters, the current title question is strictly speaking false if angular momentum refers to spin angular momentum.

John Rennie

11:22 AM

@Qmechanic the question is how the Sun changes the rotational angular momentum of the Earth. Effectively it's asking about the precession of the equinoxes. At least, that's my interpretation ...

@Qmechanic I didn't say it was a good question. Just that it's not a duplicate :-)

Tanuj

@JohnRennie I have a question to ask.

John Rennie

@Tanuj Morning :-)

@Tanuj I'm a bit busy at the moment. Is it a long question?

Tanuj

@JohnRennie not really .

Its in the PSS already

@JohnRennie

in Problem Solving Strategies, 6 hours ago, by Avnish Kabaj

About the third part , how do you locate the ICOR of this rod ? Is there a general method to find ICOR for bodies ?

Secret

0

Q: Is it fair to say that signal processing is a quantum phenomenon?

I recently saw a video by 3Blue1Brown, in which he explained that the uncertainty principle isn't a quantum phenomenon, but a result of basic signal properties. The basic premise was: the more precise you single in on a time value in the Fourier transform, the less precise you get in the frequenc...

quantum-mechanics heisenberg-uncertainty-principle signal-processing

> For quantum fields, if you use the number operator, that is the particle view, and if you use the field operator, that is the field view. Each one is another way of describing the exact same mathematical object by looking at it through a different lense, so they are entirely equivalent and neither one is superior to the other in just the minimum mathematical setup of quantum mechanics.

Hmm...

John Rennie

@Tanuj It's a long time since I've done rotating rod type questions and I can't remember the details offhand. However all you have to do is simultaneously conserve energy, linear momentum and angular momentum. The working is straightforward.

Tanuj

11:31 AM

@JohnRennie I'll be needing some help doing just that.

@JohnRennie If I had known the rod's velocity at two different points , then I could have easily calculated location of ICOR by relating the two velocities using $\omega$

Prathyush Poduval

@Tanuj Once you find the velocity of centre of mass and omega, finding the 2 velocities is pretty direct

Tanuj

@PrathyushPoduval How do I find velocity of center of mass ?

Prathyush Poduval

Initial momentum provided is $J$, final momentum gained is $mv$

Tanuj

@PrathyushPoduval won't there be any angular momentum too ?

Prathyush Poduval

Similarly initial angular momentum is $Jr$, final angular momentum gained is $\frac{ml^2}{12}\omega$

Tanuj

11:36 AM

oh okay

Prathyush Poduval

then it's just a matter of calculting

Tanuj

you mean $J\cdot l/2$

Prathyush Poduval

yeah, $J\frac{l}{2}$

Tanuj

@PrathyushPoduval okay let me check.

@PrathyushPoduval I got it , but have some doubts

@PrathyushPoduval This is what I did

$J=m\cdot v_{com}$ ; $J\dfrac{l}{2}=\dfrac{ml^2}{12}\cdot \omega$

Then we know , $v_{x}=v_{com}+ x\cdot \omega$

Prathyush Poduval

yup

Tanuj

11:43 AM

for ICOR , $v_x=0$ , and substituting , I get $x=L/6$

But , how do I know if its below or above the com ?

Prathyush Poduval

common sense

imagine the direction it rotates and and the direction it moves

for above, velocity is always positive, wheras for below it keeps decreasing

Tanuj

okay , here it will be below the com , but how can I know from the equation when the direction of force is not known

Prathyush Poduval

then, you'll have to get all mathematical

you need $\vec{J}$ and $\vec{J}\cross r$

Tanuj

Yea , let's say for this same question , I have to calculate if its above or below the com

Prathyush Poduval

12:06 PM

@Tanuj then define $\vec{J}=J\hat{i}$ and work with cross products and stuff

Tanuj

hmm ok thanks :)

Slereah

12:22 PM

Help, I think wormholes don't actually have a compactly generated Cauchy horizon

it's all a lie

well at least not most of them

Physics Meta

-2

Q: Is there any Stack Exchange site for discussing Non-mainstream physics?

I am new to Stack Exchange. I know there is a lot of discussion sites for Stack Exchange. I would like to know about there were any Stack Exchange site available for discussing and solving Non-mainstream physics problems. Is there any Stack Exchange site for discussing Non-mainstream physics? N...

discussion

Abcd

@JohnRennie In Hydrodynamics, pressure at same level need not be equal when flow is with different velocities at the two points. Please correct me if I am wrong.

Emilio Pisanty

@PhysicsMeta @ACuriousMind Was the lock on comments intentional?

Also, what's with the mod disgreement there? @Qmechanic completed the migration to meta.

John Rennie

@Abcd Erm, yes, I think you're correct

Slereah

I'm not even sure if the most trivial wormhole case has an easy to find Cauchy surface or if it's just a polarized hypersurfacee

Secret

12:33 PM

[Random biotechnology musing]

Extract the DNA from environmental samples, PCR them, inject it into bacteria and let them express them to grow the relevant proteins for use

More minimalistically: Extract inheritance material, inject into a machine that can use it as blueprint, to synthesis molecules that is specified by the instruction

Some time later, when skullpatrol is around, I am going to resurrect that philosophy afternoon and discuss about how minimalistic we can make of something so that it is still life and not a replicating machine like a virus

Qmechanic

@EmilioPisanty : FWIW, I agree with the closure on both main & meta. I just adopted a stepwise approach.

Slereah

Oh boy, a paper on the topic I haven't seen yet

nice

Emilio Pisanty

12:51 PM

@Qmechanic still, the lock just shifts the discussion back to the (closed) main-site thread.

Qmechanic

@EmilioPisanty : Yeah, that's indeed unfortunate.

Emilio Pisanty

not that I know of a reasonable fix, though, either.

Secret

[Something inspired from reading an ACS issue] To neutralise, to trap but remain unaltered or to mask

the three ways that air fresheners work

There's also this notion of voice, loyalty or to exit when a company gone downhill. It is also interesting that loyalty to a company can be mainly due to the peers that share your vision and other emotions, and has nothing to do with the company itself

Avnish Kabaj

1:09 PM

in Problem Solving Strategies, 35 mins ago, by Avnish Kabaj

Can anyone nudge me towards the right direction

I can't see how a steady state will be reached

Won't the smaller cylinder keep on oscillating?

Secret

Biofuel fouling: You have chemistry, and some self replicating complex system that interacts with the chemical and alter them

What is biology, minimalistically speaking

and nobody is on btw

Semiclassical

No one is interacting, at any rate (not counting this of course)

Secret

We are members of the None People, for we do not exist in reality

(It is always fun to play with partial existence, because physics is so bad at detecting them)

ACuriousMind

2:11 PM

@EmilioPisanty The lock is an unavoidable side effect of the migration rejection mechanism that I didn't think about at all when I closed that

Emilio Pisanty

@ACuriousMind yeah, I'm not sure there was a better course of action even knowing that it would happen

(I wouldn't have anticipated it either, I should think)

I probably would've left it open but I'm not particularly bothered by the closure

On another track, we have a new 10k+ user

ACuriousMind

Ah, he finally crept over that threshhold

Emilio Pisanty

yeah, I guess you could say that

I mean, that activity graph says a good bit stackexchange.com/users/2555843/brandon-enright?tab=reputation

Secret

95

Q: Is time continuous or discrete?

I was coding a physics simulation, and noticed that I was using discrete time. That is, there was an update mechanism advancing the simulation for a fixed amount of time repeatedly, emulating a changing system. I though that was interesting, and now believe the real world must behave just like m...

time universe simulations discrete

hmm... what is the discrete analogue of analysis, numerical analysis?

Abcd

(If anyone has time for a fluid mechanics problem please join PSS, I have posted the problem with my whole solution there...but missing the right answer by a few decimals...)

Manolis Lyviakis

2:25 PM

yoo

i have a problem

im trying to figure out

why a charge particle without initial speed will travel along the potential curves and not go somewhere else

Slereah

"A New Delhi based physicist formerly attached to CERN says the shadowy scientific conglomerate is attempting to supplant our reality with another in which Nibiru does not exist."

Dammit CERN

Don't send us to the shadow realm

dmckee

Wait. CERN is "shadowy"? How does that work when you're applying for funding? "Psst. Yeah, minister, you. Take this proposal. But don't show it to anyone or we're both dead!"

Slereah

They ask for funding to a shadowy government, obviously

Also from my own experience working at a CERN lab, the funding is indeed very shadowy

They didn't seem to have any for me!

Secret

Shadow Realm, I wonder how big it is...

Slereah

2:40 PM

I should have done a thesis on opening demonic portals for our illuminati masters

instead of supersymmetry

Semiclassical

2:54 PM

pretty sure that'd end up as Steins;Gate fan fiction.

Slereah

3:11 PM

"That the short-term experimental projects should determine what high energy theorists think about is a lie spread by Mr Smlin, Mr Wit, and similar feces."

Secret

lin W

Semiclassical

@Slereah what fools, thinking that experiment should be at all relevant for theorists

(also, why am I not surprised that LM is the author of that)

Slereah

What sucker would even read an experimental paper

Have you even seen the graphs?

They're all ugly and disjointed

Semiclassical

yeah, i mean

Slereah

disgusting

Semiclassical

3:20 PM

everyone knows that Aristotle was right.

if you need experiments to figure out what the world is, you're just not thinking hard enough.

2

(note: this is probably a caricature of Aristotle as well, but it's a common one in how history of science is portrayed)

Abcd

3:56 PM

This is a part of a bigger problem. I just want to ask one conceptual question: Is pressure of water (shown by gray) throughout each of those narrow tubes same ?

I just don't think it should be. i feel the relation $P = p_o + \rho gh$ should be followed (for narrow tube one and narrow tube 2 (separately))

user129412

Transmon qubits can be described in the language of a charged quantum rotor in a constant magnetic field. Does anyone know of any visualizations/animations/demo's that allow people new to transmons to play with this analogy, to build intuition?

Anonymous

4:49 PM

@user129412 Ask here. I'm shamelessly promoting the site. :P

Abcd

5:00 PM

@Blue Are you the same blue who earlier had a black profile pic with Schrodinger's cat written on it?

I am not sure that blue is into quantum computing.

But there are too many blues :P

There's one famous one on Maths.SE too

Anonymous

@Abcd Yes

Abcd