vzn

general recent conversations

Discussion on answer by Pete L. Clark…

Imported from a comment discussion on academia.stackexchange.c...

vzn

Oct 30, 2021 17:38

suspect this answer is so highly rated partly because respondent is so highly qualified to write it, working/established in academia "the hard way". here is some bkg & a large collection of refs on the Zhang twin prime breakthru & refs on what its like to work in academia & the challenges there & interview with Zhang etc

The h Bar

General chat for Physics SE (physics.stackexchange.com). For M...

vzn

Apr 13, 2021 03:32

in theory salon, Apr 2 at 20:19, by vzn

bell tests, a radical/ unchecked new idea/ “loophole” / vzn

vzn

Mar 12, 2021 04:46

@Bohemianrelativist there is some controversy over the idea of parallelism in QC. some authorities vehemently reject the idea. it does not relate exactly (one might say "no direct parallel," ha) to classical parallelism. one type of parallelism is in separate qubit states as modified by qubit gates. in a sense qubits exist/ evolve in parallel until entangled with each other. on entanglement the picture of parallelism tends to break down.

vzn

Mar 5, 2021 20:39

oh, on 2nd thought, have (further) axe to grind here; have recently been researching the area. and more recent inquirers, how about Gisin, Minev, Carmichael? if you ask me interpretations cut to the very heart of the foundations of QM, and points to the future, and incuriosity taken to extremes is unscientific. vzn1.wordpress.com/2021/02/04/…

vzn

Mar 5, 2021 20:02

(lol) yes, in some quarters, interpretations are like the rodney dangerfield of physics, not getting any respect. oh but, huh, people who worked on "so called" interpretations of QM: Bohr, Heisenberg, Einstein, Schroedinger, De Broglie, Bell, Bohm, ... and how about the latest cutting edge experiments that address interpretations? as the old slogan goes this aint your fathers oldsmobile™

vzn

Mar 4, 2021 17:24

"not missing the deadline is the crucial thing, whether it blows up or not is a secondary consideration" Elon Musk Reportedly Fires Employees at Will When He's Angry, and Experts Say It's a Sign of Terrible Leadership inc.com/business-insider/…

vzn

Mar 3, 2021 04:54

↑ Probability distributions for the first 36 eigenstates of a particle trapped in a heart-shaped potential well! reddit.com/r/quantum/comments/lw9z9t/…

vzn

Mar 3, 2021 04:54

vzn

Feb 25, 2021 17:06

Feb 2 at 18:17, by M.N.Raia

Hi everyone! Hope you are all safe and healthy.

So. my advisor wants me to do the following research project: 1) Get a light curve from a astrophysical object like a quasar 2) Apply a algorithm to obtain the periods of this curve

vzn

Feb 25, 2021 17:02

@DarkVader hi are you a grad student? what is your background? ML in physics is still new. wrt your query general data science refs are a not bad place to start. think cathy obrien is a standout author in the field. looking into cosmology datasets is another direction to go in, someone else was askinga about that recently...

vzn

Feb 23, 2021 17:15

@user85795 ah, the days when tens of thousands of ppl could comingle tightly packed in outdoor/ indoor concerts. yeah almost a bit decadent in todays world... my personal delight was daft punk making the tron soundtrack :) ... cmon wheres the sequel? :|

vzn

Feb 22, 2021 03:03

@DanielAdams welcome to thermo+fluid dynamics. its helpful to look into the history. re bolbteppas reponse: brownian motion was originally detected with random motion of pollen grains visible in microscopes. it is not commonly known but this was one of the origins of the atomic hypothesis: that invisible atoms/ molecules (water) bouncing around with heat energy proporptional to kinetic energy were "knocking" the grains. einstein calculated atomic parameters with some reasonable assumptions.

vzn

Feb 18, 2021 21:05

@DanielUnderwood :) \o

vzn

Feb 18, 2021 19:12

Java runs remote-controlled Mars rover / cnet (2004)

vzn

Feb 16, 2021 19:05

Quantum tunnelling

Quantum tunnelling or tunneling (US) is the quantum mechanical phenomenon where a wavefunction can propagate through a potential barrier. The transmission through the barrier can be finite and depends exponentially on the barrier height and barrier width. The wavefunction disappear on one side and reappear on the other side. The wavefunction and its first derivative are continuous. In steady-state, the probability flux in the forward direction is spatially uniform. No particle or wave is lost. Tunneling occurs with barriers of thickness around 1–3 nm and smaller.Some authors also identify the...

vzn

Feb 16, 2021 19:05

see also "particle in a box". no it doesnt happen in classical physics, its a key phenomenon cited wrt QM behavior.

vzn

Feb 16, 2021 17:26

← still eagerly awaiting you to expand on your noncopenhagen ideas... if anyone wants to talk about physics around here... plz, hoping no one will snap at me for that ;)

vzn

Feb 16, 2021 17:25

congratulations

vzn

Feb 16, 2021 17:23

that is actually no joke. online dating has revolutionized human mating, period. est ~⅓ of all relationships now start online. its also related to the "broad algorithmization" of human culture... (& thx for chging the subj lol)

vzn

Feb 16, 2021 17:18

time better spent reading the deepmind article :P

vzn

Feb 16, 2021 17:12

@Charlie true story? there are many true stories like that. another one that made the rounds a few yrs ago, a woman became a paraplegic after a pool push prank. people.com/celebrity/…

vzn

Feb 16, 2021 17:09

Will they NEVER learn? TikTok user is slammed for spraying Gorilla Glue on her hair after Louisiana mom went viral for using the adhesive as hairspray - as users accuse the latest victim of staging 'copy cat' stunt to gain fame dailymail.co.uk/femail/article-9263489/…

vzn

Feb 16, 2021 17:08

lol uh oh JR has now spurred my neurons on this other crazy story in the news lately. She's come unstuck! Louisiana mother, 40, who sprayed her hair with Gorilla Glue FINALLY has it removed by a Beverly Hills plastic surgeon during four-hour-long $12,500 procedure dailymail.co.uk/femail/article-9249869/… ... and another woman just repeated this sheer idiocy humans are stupid™

theory salon

theoretical computer science. highlight reel vzn1.wordpress.co...

vzn

Apr 2, 2021 20:19

bell tests, a radical/ unchecked new idea/ “loophole” / vzn

vzn

Mar 18, 2021 16:06

Mathematicians who unravelled computational complexity win Abel prize / new scientist

vzn

Mar 8, 2021 19:24

The Decline of Computers as a General Purpose Technology / CACM

vzn

Mar 4, 2021 04:30

This AI Thrashes the Hardest Atari Games by Memorizing Its Best Moves / singularityhub

vzn

Mar 3, 2021 05:05

Fast Factoring Integers by SVP Algorithms / Schnorr eprint.iacr.org/2021/232 reddit.com/?count=25&page=1&after=t3_lwco56

vzn

Mar 3, 2021 04:53

↑ Probability distributions for the first 36 eigenstates of a particle trapped in a heart-shaped potential well! reddit.com/r/quantum/comments/lw9z9t/…

vzn

Mar 3, 2021 04:53

vzn

Feb 23, 2021 05:07

Mathematicians Set Numbers in Motion to Unlock Their Secrets / quanta

The Classical Channel

General chat for Quantum Computing SE. For MathJax see meta.st...

vzn

Feb 19, 2021 20:25

@user27286 think it would help if you state the section topics. they are all/ mostly standard topics in QC covered by other refs. the book was originally published ~2decades ago.

vzn

Feb 18, 2021 20:25

@Mithrandir24601 hi what about you, any time to look at a cool entanglement experiment from 2019? :)

vzn

Feb 18, 2021 19:40

@user27286 lol heres the secret, even nobel physicists cant actually really explain why magnets repel. o_O they are still working on a GUT+TOE and maybe the answer will come out of that lol ... seriously, there is a fundamental deep misunderstanding of the nature of space + matter in physics. one might call it anthropocentric focus/ error. its a long story.

vzn

Feb 18, 2021 19:37

what about you, (whats your 1st name?) do you have any interest in entanglement?

vzn

Feb 18, 2021 19:32

uh, dont like ppl denigrating themselves. can talk to you all day long about the flaws of society, but maybe not today :| ... just try to learn as much as you can in the class, thats the whole point right? and a misunderstanding to think the only way is what the teacher explains. think of "graduate vs undergrad attitude/ style" ... ah feynman, the star, did you know he is given credit for originating QC? have read several of his books :)

vzn

Feb 18, 2021 19:22

you have the skills to succeed. the prof probably outlined what to study, right? but yeah grad classes are different in various ways o_O

vzn

Feb 18, 2021 19:21

so then (online) chatting is either the "solution" or part of the problem lol

vzn

Feb 18, 2021 19:18

maybe in US some grad students are not working toward Msc, not sure.

vzn

Feb 18, 2021 19:17

@ThomasKlimpel have we talked much about entanglement? just turned up a neat ref from 2019 think youd like it :)

vzn

Feb 18, 2021 19:17

challenging←→difficult

vzn

Feb 18, 2021 19:16

QC is very challenging, even for experts :|

vzn

Feb 18, 2021 19:08

Fourier transform

In mathematics, a Fourier transform (FT) is a mathematical transform that decomposes functions depending on space or time into functions depending on spatial or temporal frequency, such as the expression of a musical chord in terms of the volumes and frequencies of its constituent notes. The term Fourier transform refers to both the frequency domain representation and the mathematical operation that associates the frequency domain representation to a function of space or time. The Fourier transform of a function of time is a complex-valued function of frequency, whose magnitude (absolute value...

vzn

Feb 18, 2021 19:08

@user27286 its commonly used in engineering applications and has a lot of connections to mathematics also. also look into FFT, fast fourier transform. its a broad subj...

vzn

Feb 18, 2021 18:27

@user27286 looking on amazon ch5 is the quantum fourier transform. suggest trying to master fourier transform math before tacking quantum fourier transform. amazon.com/Quantum-Computation-Information-10th-Anniversary/dp/…

vzn

Feb 18, 2021 17:37

@user27286 software engr following physics as avocation from young age, US. started reading about QC over 2decade ago when it was just a gleam in a few eyes so to speak. some of my latest musings on subj here vzn1.wordpress.com/2021/02/04/… what is section 5.2.1 on? there are now many free refs on QC on the internet, urge you to try others out also and combine them. have some collected list myself need to write it up sometime.

vzn

Feb 18, 2021 03:37

@user27286 cool are you going to do a thesis?

vzn

Feb 18, 2021 01:15

@user27286 cool, great choice, are you doing a Msc? if not a country, what continent?

vzn

Feb 17, 2021 18:17

@user27286 nice to see someone new/ enthusiastic about QC. alas sometimes even the experts are very, uh, nonchalant about it... maybe you could tell us a bit about yourself, are you undergrad/ what country? what brought you to QC? etc

vzn

Feb 17, 2021 06:16

just googling, could this be the intro of QAOA 2014? A Quantum Approximate Optimization Algorithm / farhi, goldstone, gutmann arxiv.org/abs/1411.4028