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Qmechanic
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I'm a theoretical physicist.

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Top posts

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154
Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?
Nov 26, 2011
135
Is spacetime flat inside a spherical shell?
Nov 7, 2012
92
Why treat complex scalar field and its complex conjugate as two different fields?
Dec 4, 2013
85
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
73
Don't understand the integral over the square of the Dirac delta function
Dec 30, 2012
59
Why are Only Real Things Measurable?
Oct 28, 2013
53
Is the converse of Noether's first theorem true: Every conservation law has a symmetry?
May 10, 2012
51
Do an action and its Euler-Lagrange equations have the same symmetries?
Jan 15, 2013
51
Gauge covariant derivative in different books
Feb 24, 2013
50
Does Heisenberg's uncertainty under time evolution always grow?
Mar 20, 2011

Top Meta posts

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Why are all questions I visit from other sites protected by Qmechanic?
33
Should we have a Popular Physics SE?
30
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?
26
Latex/MathJax question: How to number equations?
21
My question was closed on Phys.SE. Can you recommend me another Internet site where my question might be on-topic?

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105
Trackbacks from Stack Exchange to the arXiv.org?
29
Relation between $\operatorname{SU}(4)$ and $\operatorname{SO}(6)$
25
Why is the product of two rotation matrices not commutative?
20
Equivalence of Two Lorentz Groups $O(3,1)$ and $O(1,3)$
15
If $XYZ=ZXY$ does $e^Xe^Ye^Z=e^Ze^Xe^Y$?