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visits member for 2 years, 10 months
seen Jul 9 '13 at 16:27

Apr
16
awarded  Popular Question
Sep
22
awarded  Notable Question
Aug
6
awarded  Nice Question
Jun
20
awarded  Yearling
May
21
asked What is the reason that relativistic corrections for hydrogen atom work?
Jan
15
awarded  Popular Question
Nov
26
awarded  Caucus
Nov
26
accepted Naive question about massive spin 2 particles and QFT
Nov
9
comment More than one time dimension
You may want to look at the following paper arxiv.org/abs/hep-ph/9910207
Sep
21
awarded  Nice Question
Sep
1
revised How does the Feynman's $i\epsilon$-prescription make the Feynman propagator causal?
deleted 9 characters in body
Sep
1
asked How does the Feynman's $i\epsilon$-prescription make the Feynman propagator causal?
Aug
27
comment Aharonov-Bohm vs de Witt
Thank you Heidar, I will read these two.
Aug
27
comment Aharonov-Bohm vs de Witt
I added the reference to DeWitt's paper in question.
Aug
27
revised Aharonov-Bohm vs de Witt
added 133 characters in body
Aug
27
asked Aharonov-Bohm vs de Witt
Aug
22
answered Why do or don't neutrinos have antiparticles?
Aug
17
accepted Why do electron and proton have the same but opposite electric charge?
Aug
17
comment Why do electron and proton have the same but opposite electric charge?
@annav The same you could say about the cosmological constant. Why is it so tiny? Because it is an experimental fact. That is certainly not enough.
Jul
19
comment Why does the weak force distinguish left and right handedness?
but wouldnt there be chiral symmetry in the massles limit, so that naturalness condition would be satisfied_