The h Bar

1:01 AM

@Semiclassical theres now experimental evidence Zitterbewegung is real. an eminent "fluidist" pointed out this ref to me not too long ago, A Search for the de Broglie Particle Internal Clock by Means of Electron Channeling / Catillon et al link.springer.com/article/10.1007/s10701-008-9225-1

Cows

5:10 AM

Gauge Theory and Inflation: Enlarging the Wu-Yang Dictionary

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Jesus . . . this guy is on fire. hmm is so this is what physics for econ/finance can look like huh interesting

Let me see if I can locate some trivial videos on QED, and basic gauge theory . . .

I like the mathy stuff with all the symbole $\otimes$

$\oplus$

and quotients though

looking for a baby math (algebra ) + some diff geo stuff. algebra driven

then want to tie it up with some proper physics qed

niels nielsen

6:09 AM

@JohnRennie, is it true you once were the editor of scientific americal magazine?

John Rennie

@nielsnielsen that is a different John Rennie

I don't think he was editor of the whole magazine

I forget exactly what he did. Possibly editor for a particular area of science.

niels nielsen

@johnrennie got it, thanks for that. quite the coincidence nonetheless.

John Rennie

Rennie isn't that rare a surname. There seem to be lots of Rennies in the US. It's a Scots/Irish name i.e. it originates from the Gaelic kingdom.

Cows

Groups and Homotopy Theory (Trailer)

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I'm the cow in the video

Consulting the spirits of gauge theory tonight :D

Slereah

7:05 AM

@Cows Boooo I'm the Fadeev-Popov ghost

Danu

8:58 AM

quantamagazine.org/…

John Rennie

@Danu nothing new there.

Danu

All cranks assemble :D

(in the comments section)

John Rennie

Quanta articles are generally pretty good, but that one is somewhat underwhelming.

@Danu ah yes :-)

Danu

It's too layman-y

But I do think that the philosophical POV is something new to most laymen

Slereah

9:53 AM

damn laymen

get off my lawn

Novalium Company

10:36 AM

Oh hi @Blue

Anonymous

@NovaliumCompany Hey

Novalium Company

@Blue So what are you up to?

Anonymous

On the road to the canteen :P

Novalium Company

Chatting while walking?

Anonymous

Yup

Novalium Company

10:38 AM

Careful to to bump into a pole :D

Anonymous

Can't talk physics now though..lol

Anonymous

Hehe

Novalium Company

Oh no problems, we can talk whenever you want :)

Anonymous

I'll see you in the evening

Novalium Company

See you :)

Secret

3:11 PM

The Black Hole Information Paradox | Space Time

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vzn

3:23 PM

> A more dramatic conclusion is that all traditional descriptions of fundamental physics have to be thrown out. Particles, fields, forces, symmetries — they are all just artifacts of a simple existence at the outposts in this vast landscape of impenetrable complexity. Thinking of physics in terms of elementary building blocks appears to be wrong, or at least of limited reach.

Mohammad Areeb Siddiqui

So suppose I have 2 sound waves given by a function $a_n(t)$ which represents the amplitude $a$ of the sound $n$ at time $t$. And I want to compare the two waves. How much effective is this approach:
1. Imagine a vector, $\vec{r}$, fixed at (0,0) on the $a-t$ plane.
2. The vector is given by $\vec{r} = <a_n(t), t>$.
3. I calculate the average rate of change of the vector divided by the total time length $T$ of the wave $n$ and call this the score $S(n) = \dfrac{d\vec{r}}{dt\cdot T}$.
4. I compare $S(n)$ to see how much the sounds match.

vzn

> Perhaps there is a radical new framework uniting the fundamental laws of nature that disregards all the familiar concepts. The mathematical intricacies and consistencies of string theory are a strong motivation for this dramatic point of view. But we have to be honest. Very few current ideas about what replaces particles and fields are “crazy enough to be true,” to quote Niels Bohr. Like Alice and Bob, physics is ready to throw out the old recipes and embrace a modern fusion cuisine.

Mohammad Areeb Siddiqui

I mean I find it very sensible

vzn

← crazy enough to be true™ :P

enumaris

4:11 PM

hello

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