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Feb
6
awarded  general-relativity
Feb
5
awarded  Nice Answer
Jan
20
comment What symmetry gives you charge conservation?
You write that it is gauge invariant off-shell if we demand $\partial\cdot J=0$. We do not have to impose it, this is always true for a conserved quantity.
Jan
20
comment What symmetry gives you charge conservation?
But that is not true. You state that it is gauge invariant if $\partial_\mu J^\mu=0$. According to Noether's theorem, this holds for a conserved quantity, even off-shell.
Jan
20
answered What symmetry gives you charge conservation?
Jan
7
comment Why does the QCD vacuum have zero momentum?
@AccidentalFourierTransform This is actually the case in the vacuum of QCD without quarks, where there is a periodic degeneracy of vacua, described in terms of the $\theta$-angle.
Jan
6
answered AdS/CFT Group Theory
Dec
4
awarded  Enlightened
Dec
4
awarded  Nice Answer
Nov
26
revised Is M-Theory and 11D Supergravity the same thing?
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Nov
26
awarded  Revival
Nov
20
revised Is M-Theory and 11D Supergravity the same thing?
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Nov
20
answered Is M-Theory and 11D Supergravity the same thing?
Nov
20
answered What exactly is a fundamental string as opposed to a D-string?
Nov
17
awarded  Yearling
Nov
8
awarded  Nice Answer
Aug
11
reviewed Approve Issues with the chain rule in derivatives in chiral perturbation theory
Jul
21
comment Maldacena's decoupling argument
@pinu: That depends on what you mean. The $S^5$ is actually quite important, since it determines the R-symmetry of the dual gauge theory.
Jul
21
answered D-branes in type II string theory
Jul
21
answered Dimensional reduction of SUSY theories