Physics
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Qmechanic
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I'm a theoretical physicist.

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All Questions Answers
Score Newest
answer
134
Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?
Nov 26, 2011
answer
117
Is spacetime flat inside a spherical shell?
Nov 7, 2012
answer
75
Why treat complex scalar field and its complex conjugate as two different fields?
Dec 4, 2013
answer
74
How do I construct the $SU(2)$ representation of the Lorentz Group using $SU(2)\times SU(2)\sim SO(3,1)$?
May 20, 2012
answer
67
Don't understand the integral over the square of the Dirac delta function
Dec 30, 2012
answer
54
Why are Only Real Things Measurable?
Oct 28, 2013
answer
49
Is the converse of Noether's first theorem true: Every conservation law has a symmetry?
May 10, 2012
answer
48
Does Heisenberg's uncertainty under time evolution always grow?
Mar 20, 2011
answer
45
Gauge covariant derivative in different books
Feb 24, 2013
answer
43
Do an action and its Euler-Lagrange equations have the same symmetries?
Jan 15, 2013
Top Meta posts
4
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51
Why are all questions I visit from other sites protected by Qmechanic?
31
Should we have a Popular Physics SE?
22
My question was closed on Phys.SE. Can you recommend me another Internet site where my question might be on-topic?
22
Latex/MathJax question: How to number equations?
20
What is the policy for linking? E.g.: Why should we link to abstract pages rather than pdf files? How do we cite arXiv preprints?
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100
Trackbacks from SE to the arXiv.org?
22
Relation between $SU(4)$ and $SO(6)$
21
Why is the product of two rotation matrices not commutative?
19
Equivalence of Two Lorentz Groups $O(3,1)$ and $O(1,3)$
13
Can the equation of motion with friction be written as Euler-Lagrange equation, and does it have a quantum version?

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