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Qmechanic
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I'm a theoretical physicist.

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Top posts

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45
Why is this translation not a linear transformation?
Nov 25, 2019
29
Relation between $\operatorname{SU}(4)$ and $\operatorname{SO}(6)$
Nov 30, 2012
25
Why is the product of two rotation matrices not commutative?
Nov 19, 2016
20
Equivalence of Two Lorentz Groups $O(3,1)$ and $O(1,3)$
Feb 8, 2014
15
If $XYZ=ZXY$ does $e^Xe^Ye^Z=e^Ze^Xe^Y$?
Dec 14, 2015
14
Dirac delta function of non-linear multivariable arguments
Dec 27, 2013
11
Is the exponential map to the indefinite special orthogonal groups $SO^+(p,q)$ surjective?
Dec 14, 2015
11
An outrageous way to derive a Laurent series: why does this work?
Aug 13, 2014
10
When can the Lagrangian be squared without changing the stationary path?
Nov 12, 2017
9
Why is $\frac{\operatorname dy'}{\operatorname dy}$ zero, since $y'$ depends on $y$?
Jan 5, 2014

Top network posts

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154
Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?
135
Is spacetime flat inside a spherical shell?
105
Trackbacks from Stack Exchange to the arXiv.org?
92
Why treat complex scalar field and its complex conjugate as two different fields?
85
How do I construct the $SU(2)$ representation of the Lorentz Group using $SU(2)\times SU(2)\sim SO(3,1)$?