V*********t
发帖数: 1478 | 1 无论LHC给出什么样的结果，hep theorists都有很多事情可以做的 |
|
x********g
发帖数: 595 | 2 其实我们早就被人分出去了，很早就有string theorists的称号了：） |
|
|
w****1
发帖数: 4931 | 4 string theorists are giving you a preview of the future. whether you choose
to learn from the prophets is your business.:) |
|
w****1
发帖数: 4931 | 5 As I have been saying, you don't understand string theory until you start
writing papers on string
theory. If you finish studying Polchinski (that is, not just to read, but do
the homeworks as well), then
you should know enough to understand a lot of string theory literature.
I'm not sure if you are really a string theorist. W+B is one of the most
explicitly written books. It is not
abstract at all. If you want something abstract you should read Grothendieck
.:) Polchinski is a great
book becaus |
|
c****e
发帖数: 2097 | 6 who among the string theorists are considered prophets?
choose |
|
c****e
发帖数: 2097 | 7 en, i guess whx was getting at QFT. which is a bit special, given that it's
still the pillar of modern hep theory. so a person like Nima has indeed
significantly more understanding about it than any soso theorist.
this is basically learning QED from Feynman or esp. Schwinger. After the
important issues have been settled, any lay person can teach a decent
class on the subject. |
|
c****e
发帖数: 2097 | 8 i c, he was schwinger's student.
think Glauber was a theorist too, but later on became a optician |
|
|
P**********l
发帖数: 324 | 10 各位前辈好~
小弟09fall即将赴美，准备做理论凝聚态，目前offer中还没决定取舍的是UW-Madison和
PSU，另外还有个暂时没消息的UCSD.
请教各位牛人，这三个学校的cm theory情况如何，应该怎么排序？看usnews上把psu的凝
聚态排得很高，但我有一次和一个cm theorist聊天他老很嗤之以鼻...
先谢谢了！ |
|
c****e
发帖数: 2097 | 11 brain, pen and paper still dominates theory. not computers. so far no one
defines a theory as a code.
it would have been a rather cumbersome theory. currently, the most '
fundamental' theory of the universe
won't require much media to write down.
a theorists' job is to come up with a theory that kicks the experimentalists
butt :D:D:D
paperless了。 |
|
c****e
发帖数: 2097 | 12 you're not a string theorist? |
|
j*********t
发帖数: 217 | 13 String theorists are nothing like this weird dude |
|
Q******g
发帖数: 607 | 14 The normal procedure I do with arXiv is like this:
1. Submitting the paper to journal, meanwhile, uploading it
to arXiv.
2. After the proof reading of the publication, update arXiv
if there is any non-trivial changes.
But there were exceptions. Once I worked in a small and
friendly community, we uploaded to arXiv first, waited for
two weeks for peer's comments, then submitted to a journal.
I'm a theorist, my experience may mean nothing to the experimentalists. |
|
w****1
发帖数: 4931 | 15 I'd say Liu is the most influential Chinese string theorist at the moment.
He is very creative.
Chu |
|
w****1
发帖数: 4931 | 16 In the past couple years, even some string theorists like to start a talk by
saying "the LHC will be up running
soon" and sound all excited (sometimes as a joke). I guess things haven't
been going so well. |
|
w****1
发帖数: 4931 | 17 It's not about who they invite, it's about what they want to do with the
visitors. The institute at Hangzhou
didn't even have any string theorists around when Andy visited. We had
almost no interactions with the local
students. The one semester string theory course was a joke. But the problem
is with the organization of the
program. They simply didn't have a plan, other than inviting people to have
lunches and dinners.
In contrast, the string theory program at TIFR is much, much more successful |
|
w****1
发帖数: 4931 | 18 Oh what's that? You "heard"? So how many string theory papers have you
actually read? And how many do you
understand? And how many string theorists have you actually talked to,
instead of "heard about"? Seriously
dude, you can fool yourself however you want, it's not my business. But
since you are trying to mislead others
on this board, I'm going to ask you to shut up when you don't know what you
are talking about. |
|
c****e
发帖数: 2097 | 19 well, go read some papers by Martin Luscher, an ex-string theorist, you will
know what kind is involved.
It isn't that having the most expensive or powerful computer or computer
scientist will help solve any physics problem.
a set of numbers without order, hierarchy, structure isn't going to do much. |
|
e**********n
发帖数: 359 | 20 So what? What is your point? In every job, there are difficult skills that
only a few experts can master. Does
a string theorist necessarily know how to classify all simple finite groups?
What about the Fermat's
theorem? There are hundreds of examples, e.g. exactly solvable models in
condensed matter physics,
exactly solvable stochastic volatility models in mathematical finance. Even
the implementation of floating
number arithmetics on computers, which you might take for granted, is not
trivial. |
|
w****1
发帖数: 4931 | 21 What you are saying has absolutely nothing to do with my post. Not sure why
you were replying to me.
By the way, string theorists do know what the monster group is. We know a lot about monstrous
moonshine. We also know about elliptic curves, the Weil conjecture, exact solutions of sine-Gordon models
and integrable spin chains. It is not just because we have more curiosity than other physicists. All of these
came up in different contexts in string theory.
groups?
Even |
|
w****1
发帖数: 4931 | 22 In fact, string theorists are the most open minded group of physicists I know of. However, we don't tolerate
ignorance. Arrogance is okay, ignorance is not okay. Do I enjoy talking to an arrogant person? If he knows
more than I do, then definitely yes. There is a very arrogant physicist in New Jersey (no, I'm not talking
about Ed :) ), and I enjoy talking to him every time because there are lots I can learn from him.
It is not my duty to educate you about string theory, but I suggest you learn a |
|
w****1
发帖数: 4931 | 23 Dude, I'm not even showing off. You asked me if string theorists know about
classification of simple finite
groups etc etc, and I was answering your question. |
|
w****1
发帖数: 4931 | 24 Well, in that case you just made yourself sound more stupid, assuming string
theorists don't know what
sporadic groups are.
for |
|
c****e
发帖数: 2097 | 25 i see, you talk to nobel laureate and fields medalist. never mind small
string theorist, will ya?
let people have their fun their way. don't be the b*tch who spoils the party
. hohoho
t
intended
about |
|
w****1
发帖数: 4931 | 26 String theorists may have bigger ambitions than merely "understanding" the
proof of Fermat's last theorem.:) As little as I know about fermat's last
theorem, the key is the modularity of elliptic curves over the field of
rational numbers. This is part of the much much bigger and broader Langlands
program. And even though I cannot quite appreciate the connection, experts
in the field have formulated the geometric version, hoping to gain
intuitions on the arithmetic Langlands program. And thanks t |
|
w****1
发帖数: 4931 | 27 There appears to be two overlaps, or three if you count one of the founding
fathers of string theory, or four if you count MK as a string theorist.:)
party |
|
e**********n
发帖数: 359 | 28
in
the
This is exactly what I said. Without raising these questions, these
physicists feel to have been left out of the
party.
So, what is worth jealousy here? If you hear the same kind of platitude in
one seminar and another, do you
just sleep over it or construct a theory for the underlying motivation, like
a physicist does?
I agree with you on this point, and your following comments. Hopefully, you'
ll agree that there is no need for
any string theorist to blow him/herself larger than what h |
|
w****1
发帖数: 4931 | 29 You are wrong. We string theorists kick ass, and you suck.
Seriously, it seems that your knowledge of string theory comes entirely from
TV shows, which led to many of your misconceptions.
like
you' |
|
w****1
发帖数: 4931 | 30 I don't even know how the argument started. Did the guy lose his job to a
string theorist or something? He is clearly not in a playful mood. I gotta
go. Good night everyone. |
|
w****1
发帖数: 4931 | 31 It is ridiculous that it is even under discussion whether crackpots
should be allowed to speak on this board. Crackpots should go post on
yahoo forum or something. I thought everyone here is either a PhD or a
graduate student, and we are all capable of filtering out obvious
nonsense. I'm also amazed how politics gets involved in every
discussion, and how many insecure people are dying to get attentions
here. Hopefully xiongxiong, being a string theorist so I've heard, can
lead some healthy and s |
|
x********g
发帖数: 595 | 32 不是没有可能，李同学毕竟奔5了，我就见过一个还算年轻的著名string theorist 不
会用linux/mac/unix, 只用xp。 |
|
c****e
发帖数: 2097 | 33 I heard it's just a footnote in PAM Dirac's book, but I cannot find a
single footnote in that book, so it must not be all true.
It's like proving 'Fermat's" last 'theorem', 就是没功劳，苦劳也是有的。
Dirac这本小书很牛比，string theorist人必一用的DBI action是equation 4-39. |
|
w****1
发帖数: 4931 | 34 Oh really. Have you talked to the string theorists in person? I don't
believe that this is what they think. It is certainly possible that the high level of administration thinks so, and that, is quite sad. By the way, I think it is incredibly ignorant and irresponsible to judge a person by looking only at their names on papers, without knowing what they actually did. |
|
w****1
发帖数: 4931 | 35 You are wrong on so many levels. First of all, if a string theorist's name is Zhang, he wouldn't care if his name always comes last -- because nobody else in the field would care. We all know that the names are listed alphabetically. Second of all, in string theory, the best graduate students will sometimes write single author papers. Sometimes the advisor would let the student write a single author paper just to prove their independent research ability. Most string theory professors are not int |
|
C**R
发帖数: 1047 | 36 可怜姓张的string theorist。为了证明自己强，基本不能和别人合作了。可怜啊，可
怜。反而姓A的人，巴不得和别人合作。
你说这就是公平吗？
is Zhang, he wouldn't care if his name always comes last -- because nobody
else in the field would care. We all know that the names are listed
alphabetically. Second of all, in string theory, the best graduate students
will sometimes write single author papers. Sometimes the advisor would let
the student write a single author paper just to prove their independent
research ability. Most string theory professors are not in |
|
x******i
发帖数: 3022 | 37 I thought the development of string theory is always
at the speed of light ...
developing faster than most other fields of
physics. String theorists talk as if they are depressed and progress comes
slowly, and that's just because they
have been too spoiled in the past decades when breakthroughs come on a
monthly basis. |
|
w****1
发帖数: 4931 | 38 When you make such a comment on a field you know absolutely nothing about,
that comment is equivalent to gibberish to me which I will ignore. However,
regarding your second comment, as a matter of fact, many string theorists
are currently applying ideas of string theory to condensed matter physics.
If you were aware of some of the recent developments in condensed matter
theory, you would have known that string theory has played an important role. |
|
w****1
发帖数: 4931 | 39 I would not agree with that statement. The reason string theorists are
interested in string theory, is that many new ideas have been born in string
theory, which allow us to tackle problems from new perspectives. Many other
"older" fields such as QCD, condensed matter physics, even classical
relativity and hydrodynamics, despite being very important, have not had
genuinely new ideas in recent years. There are always technical advances but
conceptual breakthroughs are rare. This is where string t |
|
c****e
发帖数: 2097 | 40
hehe, 花盒上，stop harassing beauties
it's really puzzling how 论文排名 could have led to discussion of string theory and all. why are people so interested in such a useless theory?
since so many people are convinced it is a irrelevant theory, maybe then all go about constructing their own versions?
that will be an honorable thing to do, rather than bitching over others work.
there are many string theorists, but even more people working on astrophysics, condensed matter, lattice gauge theory, phenomeno |
|
C**R
发帖数: 1047 | 41 真他妈的是sb呀
theory and all. why are people so interested in such a useless theory?
all go about constructing their own versions?
work.
astrophysics, condensed matter, lattice gauge theory, phenomenology? just
make some real breakthrough and many string theorists will switch over, i
bet.
one possibly need? exposure? think again. how about some academic dandies
start telling you all your 'theories' are also bullshits? this can happen
easily with the high Tc community.
wise. |
|
w****1
发帖数: 4931 | 42
theory.
That was a joke, obviously. Somehow a lot of people get offended by my
comments when I meant no harm.
I just like to mess around a bit.:)
conventional'
If you consider integrable spin chains and solvable 2D CFTs as condensed
matter theory, then absolutely
yes. Although, these led to mostly technical advances rather than conceptual
breakthroughs. Subjects like
quantum critical points in condensed matter theory have been independently
explored by string theorists
in the past. I would of c |
|
w****1
发帖数: 4931 | 43 I'm not interested in the discussion on whether engineering is better than
theoretical physics or the other
way around, per se. Obviously, if I thought there is a subject more
interesting than string theory, I would
have quit string theory and do this other thing instead. But I would like to
point out that theoretical
physicists has been more careful than they ever were. You may criticize
condensed matter theorists for
making unjustified approximations all the time, but you cannot criticize
stri |
|
C**R
发帖数: 1047 | 44 我是做实验的，对dft稍有涉猎，经常和dft theorists聊天合作。
我们的technique对于low energy exitation可以达到1-3nm左右的resolution，测的是
Im(1/epsilon). energy resolution可以达到0.1eV。这个spatial resolution,你用光
子是做不到的。但是我们的technique也有我们问题，比如chrenkov radiation就通常
无法避免，这样的话测的就不是真正的Im(1/epsilon)。 |
|
w****1
发帖数: 4931 | 45 If you are not a string theorist and cannot understand string theory papers,
I understand. But at least educate
yourself a little bit with some popular books or even TV shows before asking
such an ignorant question. |
|
c****e
发帖数: 2097 | 46 i see, he was not a theorist |
|
V****n
发帖数: 651 | 47 From Steve's Blog:
String theorists: We've got the Standard Model, and it works great, but it
doesn't include gravity, and it doesn't explain lots of other stuff, like
why all the elementary particles have the masses they do. We need a new,
broader theory.
Nature: Here's a great new theory I can sell you. It combines quantum field
theory and gravity, and there's only one adjustable parameter in it, so all
you have to do is find the right value of that parameter, and the Standard
Model will pop r |
|
c****e
发帖数: 2097 | 48 i don't imply that.
moreover, lots of times theorists behave like kids, trying to showoff who
can figure out the formula first.
it is not ridiculous but laughable. |
|
c****e
发帖数: 2097 | 49 sure, quarks were first fictional and then real. don't you read history?
plus, a theorist is never limited to study what experimentalists have done.
and don't tell me experimentalists found positron before Dirac proved its
existence by an EQUATION.
calling other people whatever names isn't going to help your physics.
(Let me add my favorite for this, didn't Einstein predict the cosmological constant 80 years before it's
observed?)
it |
|
C**R
发帖数: 1047 | 50 good luck, strings!
what makes a living makes u a living. i would feel strong about it if i were
u.
but, sorry. so far, no string theorists have derived anything useful for a
practical energy scale, right? that's why so many of ur kind are interested
in cosmology where the experiments were done by nature.
.
constant 80 years before it's |
|
