The h Bar

12:06 AM

@vzn: As long as there are people within the "community" interested in the new stuff, I believe that's enough. It only gets problematic when there is no one around anymore. You can't question everything all the time and get anywhere in actually developing theories (see the modern philosophy of science for that). I'm trying to keep open, but foundations of physics are just a hobby I like to think about once in a while.

Icosahedron

12:53 AM

@0celo7 When did you start reading qm during gr?

0celo7

@Icosahedron I'd have to look through my dad's Amazon purchase history to tell you that. For obvious reasons, I won't be doing that.

Icosahedron

approx.

0celo7

Month, maybe more? I really can't say.

Icosahedron

did you finish at the same time?

0celo7

Probably not, I didn't finish the last few chapters in Zee until summer.

Icosahedron

12:56 AM

wait... then you finished qm first?

0celo7

Probably, yes.

vzn

@Martin essentially agree. science is vast & focuses on pragmatism. however an "incuriosity" or worse "resistance" among scientists can be contrary to higher ideals of science. QM is now over a century old. sometimes theres a subtle difference between "established" and "rigid".

if any (groundbreaking) "new physics" is ever found (which seems inevitable to me, see hints of it emerging), predict it will be lurking in the "foundations"...

Kyle Kanos

1:33 AM

lol...within 4 minutes of posting it, my answer to dimension's query gets a -1

0celo7

@KyleKanos Why do we have PhysicsOverflow ads? (SE is too smart for my adblock.)

Kyle Kanos

@0celo7 The short answer is because it has 6 votes in the Community Ads 2015 post

13

Q: Community Promotion Ads - 2015

The dawn of a new year, 2015, now approaches, or has already approached, either way it means that it is now time to reset our Community Promotion Ads! What are Community Promotion Ads? Community Promotion Ads are community-vetted advertisements that will show up on the main site, in the right s...

+24/-18 currently

0celo7

@KyleKanos Have you been to PO? I just clicked on a question and saw the comment "I don't think this is gradute level. Even if granting it is, this question does not seem to contain much thought. So -1."

Kyle Kanos

I've checked out the site once or twice

I'm not a huge fan of their UI, it's rather pedestrian

0celo7

UI? What are you, a CS major :P

UI seems exactly like SE, or am I missing something?

Kyle Kanos

1:43 AM

The functionality might be like SE's, but it looks hideous

0celo7

I might make an account there since there are no regular string theorists in our chat and I can't ask homework-like questions here.

Kyle Kanos

You could take that as a sign that string theory is dumb & you should pursue something else ;)

0celo7

@KyleKanos Is Kyle your real name? I'm considering changing 0celo7 to Ryan Unger or at least Ryan U.

Kyle Kanos

@0celo7 Actually, no it isn't.

0celo7

See, even I can't get my username correct.

@KyleKanos I'm pursuing it as a curiosity.

It is a very mentally laborious curiosity, however.

Kyle Kanos

1:48 AM

I'm sure it is rather laborious! I've never studied it (not in my interests either)

0celo7

The prerequisites are quite vast, and as a self-studier, I never know when I'm done with prerequisites. This is my third attempt at studying it, hopefully I'm prepared this time.

@KyleKanos Anyway, is your thesis on arXiv?

Kyle Kanos

@0celo7 Not yet

Not 100% sure I'm going to either. I'll talk to my advisor about it first

0celo7

Are there downsides (to putting it online)?

Kyle Kanos

You can't get royalties ;)

My university charges non-affiliated universities/researchers a few $$ to access the document

I get some of that money

0celo7

A few? It would probably be >=$35 for someone not at an institution, i.e. me until August.

At least, that's what most paywalls seem to be.

Kyle Kanos

1:56 AM

No idea the costs of it all.

In fact, I'd be surprised if I get any amount of money over the next 30 years

0celo7

I wonder if I'll get access to physics journals as an undergraduate engineering major.

I have a list of articles that I want to check out when I can.

Kyle Kanos

As long as you are at a university with a physics department, you should have access to them

0celo7

Do U.S. universities generally get Springer access?

I know ACuriousMind and Danu have it, but they're in Germany.

Kyle Kanos

AFAIK, yes

alemi

2:12 AM

I have springer access

I'm at a US university

David Z

4:26 AM

@AlfredCentauri oh, of course. That's more unusual, though, I would think.

Physics Meta

5:32 AM

0

Q: Should linking to competitor sites really get you banned?

(note: this is different from Is it inappropriate behaviour to post links?; I am now asking for a debate on the existing policy, rather than asking whether the policy exists) Kyle Kanos's answer to the forementioned thread claims that it is not allowed to post links to other Q&A sites outside th...

discussion comments hyperlinks suspensions

Martin

7:27 AM

@vzn: Agreed, the foundations (qm foundations and/or quantum gravity) will most probably find the new physics. And yes, an incuriosity can be bad, but from my perspective, it still seems that quantum mechanics is not yet completely rigid - that can just be a difference in perspective, depending on who are the people we mostly talk to :).

user54412

8:07 AM

@Danu "It is shown that a stationary black hole must have topologically spherical boundary and must be axisymmetric if it is rotating." -- Hawking 1972

user54412

MTW p. 876 also claims this is discussed in Hawking 1971 but that's a real pain of an article to download when I'm off campus.

user54412

Honestly, what else could it be but axisymmetric? The GR and horizons and Killing fields are details; what matters is that axisymmetry is the only way to get flows (isometries) that wrap on themselves so that nothing changes in time. See Hawking's discussion at the bottom of p. 7 in the 1972 article.

user54412

8:41 AM

@Danu I suspect that those are cases where tacit assumptions are being violated. For example, having non-vacuum, especially exotic stress-energy that violates energy conditions. Or if you allow degenerate horizons or extremal solutions (borderline naked singularities), all sorts of things can go wrong.

user54412

I would link to more stuff that elucidates the difference, but I can't remember which articles are the good ones right now.

user54412

This is really annoying. Between PRL's anti-script measures (and non-free articles, the fiends!) and my department's extreme security in logging into its machines, I can't actually get access to anything.

user54412

Why can't the rest of physics be as open as astro?

Marcel

9:03 AM

@Martin I agree with that. I'm not so much into the current research on that topic. My focus on the thesis was mainly to check Bell's arguments for consistency.

@vzn What I felt when I read about that topic first, was that the "scientific community" wants this topic to be closed. Some even seem to displease discussion on that topic.

@vzn I just started writing on an article that sums up my thoughts. It may not be worth publishing in context of current research but I'll at least put it on arXiv.

@vzn I'm definitely interested in QM interpretations/foundations. Currently, I try to get my hands on a master thesis on QM foundations. I'd love to talk about such stuff in future. Where can I find that chatroom?

Marcel

9:41 AM

No, I didn't know it before. The wiki article states one assumption that I wouldn't assign to "classical systems" though.

*"Noninvasive measurability: It is possible in principle to determine which of these states the system is in without any effect on the state itself, or on the subsequent system dynamics."*

This is for example wrong in classical elctrodynamics if you consider EM-wave polarization.

Violation of the inequality thus shows only the failure of the assumption.

@DanielSank

The Dark Side

10:00 AM

@DavidZ and other mods: I just want to point out that my NAA flag on this answer was really in response to v1 of the answer. Please see the revisions history.

v2 is a very bad answer too, but probably doesn't qualify for an NAA flag.

(Not that I worry too much about flags being declined, but just felt the need to clarify.)

:)

pZombie

if any QM expert does not mind, can you please check physics.stackexchange.com/questions/177940/…

Martin

10:18 AM

@Marcel: I'm glad I didn't misread your intentions and ideas. As I said, I hope to come back to the topic myself soon enough! If I can add something to what has already been said, I'll let you know!

theory salon

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