The h Bar

I mean, the $\lvert \Omega \rangle$ is "some Fock state" because it lives in the same Hilbert space as the $\lvert 0\rangle$ and the Hilbert space of the latter is just the Fock space.

Slereah

I don't think we can pretend that a domain wall is just a Fock state at infinity

ACuriousMind

But yeah, pretending that doesn't make a whole lot of sense

Slereah

I guess that maybe I'm thinking of this backward

It's probably more 1) we assume this 2) we look at what physical process that works for

And that works for scattering experiments and that is that

And the HEP people are happy

and the notion just breaks down for any other type of experiment

If that is true it's not too complicated but poorly explained in QFT books

0celouvskyopoulo7

@AccidentalFourierTransform Is it?

I have a very hard time believing any global claims about QM.

Slereah

You're gonna have a very hard time when you get to QFT

0celouvskyopoulo7

10:55 PM

@Slereah Are you talking to me?

Slereah

yes I am

0celouvskyopoulo7

I'm familiar with QFT

It's all wrong

Slereah

that it is

0celouvskyopoulo7

@Slereah I need to think of people to quote in my thesis

Slereah

Parents and advisors are the classics

0celouvskyopoulo7

10:57 PM

typo

Slereah

Well, some QFTs are alright, but only the free ones

Or the trivial ones

ACuriousMind

Why would you quote people?

Slereah

@ACuriousMind Everyone does it

0celouvskyopoulo7

@ACuriousMind One always puts an inspirational quote or two

ACuriousMind

Nope

0celouvskyopoulo7

10:58 PM

Yep

Slereah

Well, many do

I think Alice in Wonderland is a popular thing to quote

I guess it's just full of general quotable things in many contexts

ACuriousMind

"Americans are too in love with the sound of their own voice to speak the truth!" - Revolver Ocelot

0celouvskyopoulo7

> The notation $\delta$-function is a wild abuse of notation. Maybe it has survived because it is so bad that the motivation for introducing the concept of distributions becomes clear.

Slereah

Is that the time of the day where we mock America

0celouvskyopoulo7

- Gerd Grubb

@ACuriousMind In which game did I say that?

ACuriousMind

11:01 PM

@0celouvskyopoulo7 MGS2: SoL, apparently

0celouvskyopoulo7

Ah

I was overly Communist in that game.

I was infiltrating a Russian spy group, so it's fine

> The next person to propose a new definition of connection should be summarily executed. - Mike Spivak

> The proof is trivial. - Fermat

Joshua Lin

quote some dank homer

"he was advancing in pursuit of traces of the Goddess"

math.berkeley.edu/~wodzicki/prace/Vestigia.pdf

Slereah

Maybe you should quote the Epic of Gilgamesh

In the original sumerian

0celouvskyopoulo7

@ACuriousMind Did you not quote anyone?

Jaime Gallego

I need to align my sleep patterns for this SATurday, should go to sleep now.

Catch you later

ACuriousMind

11:04 PM

@0celouvskyopoulo7 No, and I don't plan to do so in my master's thesis, either.

0celouvskyopoulo7

> My life was so much easier before I tried to solve differential equations. - Me.

@ACuriousMind Why not?

ACuriousMind

Because...I don't see why I should, I guess

0celouvskyopoulo7

Because it's neat

ACuriousMind

I mean, if there was some eerily appropriate quote I'd include it

0celouvskyopoulo7

You're an AI, why am I even talking to you

ACuriousMind

11:06 PM

Maybe I should quote "There is no spoon" just to make you wonder what I meant by that :P

0celouvskyopoulo7

@ACuriousMind Hirsch has some really good quotes you know

Slereah

The Axiom of Choice is obviously true, the well-ordering principle obviously false, and who can tell about Zorn's lemma?
— Jerry Bona

0celouvskyopoulo7

> The statement sometimes made, that there exist only analytic function in nature, is in my opinion absurd. - F. Klein

> "Transversal" is a noun; the adjective is "transverse." - J.H.C. Whitehead

ACuriousMind

@Slereah I know that quote and like it, but who the hell was Jerry Bona?

Slereah

he is the quoter of this quote

0celouvskyopoulo7

11:08 PM

> Geometry is a magic that works... - R. Thom

oooo

I like that one

Slereah

a thesis I read on non-Hausdorff manifolds had of course this great quote

0celouvskyopoulo7

> Mathematicians are like Frenchmen: whatever you say to them they translate into their own language and forthwith it is something completely different. - Goethe

Slereah

"Non-Hausdorff spaces, often regarded as a technical nuisance, sometimes produce a global disaster."
- Geometry of non-Hausdorff spaces and its significance for physics by M.Heller et al

0celouvskyopoulo7

> The only prerequisites are basic algebra and calculus. - S.W. Hawking & G.F.R. Ellis

I still can't believe that quote

Slereah

that's like Bourbaki saying no requisites at all

Perhaps technically true, but not really helpful

0celouvskyopoulo7

11:12 PM

Pretty sure you need more than that for HE

Like...topology

Slereah

yeah, some topology wouldn't go amiss

0celouvskyopoulo7

PDE

Slereah

PDEs are usually included in calculus

0celouvskyopoulo7

Sobolev spaces are basic calculus?

Slereah

maybe not

Bernardo Meurer

11:19 PM

Kazoo Kid - Trap Remix

►

Slereah

Haag has some sort-of axioms for how to define scattering states

The Haag Ruelle scattering theory

Bernardo Meurer

KAAAAAZOOOOOOO

Slereah

Liam Lynch: United States of Whatever

►

I probably should read Haag's book fully at some point

Peskin and Schwartz are alright but they don't really fill me with certainty as to why QFT works

semi-rigorous QFT is pretty ugly

Bernardo Meurer

Rust is pretty much glorified brainfuck

Slereah

Brainfuck is just a glorified Post machine

Post–Turing machine

The article Turing machine gives a general introduction to Turing machines, while this article covers a specific class of Turing machines. A Post–Turing machine is a "program formulation" of an especially simple type of Turing machine, comprising a variant of Emil Post's Turing-equivalent model of computation described below. (Post's model and Turing's model, though very similar to one another, were developed independently. Turing's paper was received for publication in May 1936, followed by Post's in October.) A Post–Turing machine uses a binary alphabet, an infinite sequence of binary storage...

They seem to do this weird thing which I'm guessing is due to the lack of proof of the mass gap where they project the Hilbert space to some ugly Hilbert space

$\hat E(\{0\} \cup M_m \cup V_m) \mathscr H$

With $M_m$ the mass shell and $V_m$ the free multiparticle spectrum

0celouvskyopoulo7

11:49 PM

if you have a thing named after you, how do you refer to it

Slereah

The me theorem

Overall physics papers are very impersonal

0celouvskyopoulo7

physics?

c'mon

you're not a physicist