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visits member for 3 years, 4 months
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I am now active on PhysicsOverflow: a new higher-level physics site

Today, Physics SE is overmoderated by too many users who despite their > 3000 rep are not competent enough and overreach their state of physics knowledge, who are neither interested in nor knowledgeable about advanced (theoretical) topics at a technical level, but strongly represent the SE philosophy and goals. Legitimate technical questions (high-level ones too) are stigmated and closed as homework, fundamental physics questions are closed as philosophy, good/excellent questions are closed abusing any pretext on a regular basis. Some high rep users even explicitely attack legitimate TP topics. The same people who wrongly close good questions prevent anything from getting reopend too. My participation here has therefore stopped.

Since Ron Maimon has been driven away (by external SE forces against the will of the then on Physics SE active community) at the beginning of December 2012 and many other experts have left too, this is no longer the reasonably high level Physics.SE of physicists and physics enthusiasts I loved, enjoyed, and appreciated during almost two years.

Apart from the striking downgrading of the physics level (sporadic higher level questions about advanced topics get no longer answered and sometimes even downvoted or closed!) and the fact that fundamental physics topics I am interested in have disappeared, too many very bad things, which should not occur on a serious physics site that upholds the scientific integrity, are now happening on Physics SE on a regular basis. The dominant people in power being only interested in policing and blindly enforcing rules that are orthogonal to a free academic community, drives academics, active researchers and students of physics and astronomy away, and prevents the site from recovering from the heavy blow it had to take on December 2012.

Experts are not taken serious, they have nothing to say for example about what questions are allowed, people interested in doing advanced higher level physics are no longer welcome, trolling about legitimate mainstream (theoretical) physics is allowed or even endorsed as it gets upvoted by the crowd and even supported by certain moderators. This makes asking question on Physics SE about some in principle legitimate fundamental physics topics no longer a good idea.


1d
reviewed Reject suggested edit on Instantons in Witten's supersymmetry and Morse theory
1d
comment What is the advantage of AdS/CFT in studying strong coupled system comparing with the lattice method
As explanied here, for example Fermion doupling which is rather cumbersome in lattice methods, has no issue in ADS/CFT.
2d
reviewed Leave Open Laplacian in tensor
Jul
19
reviewed Leave Open Invariance of canonical Hamiltonian equation when adding the total time derivative of a function of $q_i$ and $t$ to the Lagrangian
Jul
17
comment Mathematica package for supergravity and string theory
@KevinYe it should not be a controversy ..., but MathOverflow is certainly a good place too as there also live some nice theoretical physicists. The question is also here now.
Jul
17
comment Mathematica package for supergravity and string theory
@Bernhard nope, I meant this one meta.physics.stackexchange.com/a/2907/2751
Jul
17
reviewed Leave Open Mathematica package for supergravity and string theory
Jul
17
comment Mathematica package for supergravity and string theory
@BrandonEnright nope we decided on meta that questions asking for software specifically used by / useful for physicists are on topic: Leave open. Therefore there is also no need for downvotes here ...
Jul
15
reviewed Leave Open How to obtain the field equations in Brans-Dicke theory from the action?
Jul
12
comment Heisenberg formalism of QFT
@ACuriousMind making use of the covariant quantization, time and space are treated in exactly the same way ...
Jul
12
comment Should a radiation-filled Universe be scale invariant?
Related comments about why the CMB is theoretically expected to be scale invariant
Jul
12
reviewed Approve suggested edit on Spinor Commutator in Peskin and Schroeder
Jul
11
comment Why can the Euler beta function be interpreted as a scattering amplitude?
Some more details about the calculation of for example the scattering amplitude of four open string tachyons and why it corresponds to the Euler-Beta function are outlined here.
Jul
11
revised Free Particle Path Integral Matsubara Frequency
This is not homework but a legitimate technical question. The homework tag should not be misused like this, as it wrongly hides questions from people who are potentially interested but filter homework out.
Jul
11
comment What decides the signs and coefficients of terms in superfield?
As explained here, signs an normalization are usually a matter of convention, but certain things have to be considered when going to different levels of supersymmetry or doing dimensional reductions.
Jul
11
revised Geodesics in AdS3
This is not homework but a rather advanced legitimate technical question
Jul
10
comment Suggest me specific book for studying scattering theory and special functions
This is not a duplicate, this question is much more specific than the one asking for a general book about QM. And as we have the new books policy, such questions are allowed now. So this unilateral closure was not appropriate, voting to reopen.
Jul
10
revised Changing vector basis in AdS$_3$
This is a quite advanced legitimate technical question and certainly NOT homework
Jul
9
comment Ambiguity in Asymptotic Perturbative Series and Instantons
Some explanations are given here and Prof. Carl Bender's Mathematical Physics course, which exactly deals with asymptotic series, might be helpful.
Jul
8
comment O(N) sigma model at large N
To me that step is not obvious either at present, but I am confident that he will explain it as soon as he sees your comment.