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As time goes on, I grow more disillusioned with quantum field theory.


3h
comment Addition of spin angular momentum for massless particles
I tried doing this before writing up this question, but it didn't work. Would you carry out your idea for a few states and display it here?
1d
comment Why nearsighted people see better with their glasses *rotated*?
I am short-sighted, and have verified for myself that tilting the glasses sharpens the image. So this can't be right...
Mar
31
comment Excited Energy levels of Hydrogen vs Solids
Hydrogen is special in that low lying levels have large energy separation. For larger molecules and solids, energy spacing is much much smaller.
Mar
27
comment What parity has an electron?
@annav I thought that electron, proton, neutron having +1 parity is the convention. Then the positron, antiproton, antineutron having -1 parity is required, and not a convention.
Mar
25
revised Addition of spin angular momentum for massless particles
added 3 characters in body
Mar
25
asked Addition of spin angular momentum for massless particles
Mar
16
asked Interpretation of Einstein relation in kinetic theory
Mar
13
awarded  Popular Question
Mar
9
comment Statistical Mechanics: Most probable orientation of grain particle in gas chamber?
@user42189 no, stability is determined by just the value of the integrated potential; not how it is distributed.
Mar
9
comment Statistical Mechanics: Most probable orientation of grain particle in gas chamber?
Ah very nice... one comment about your answer: believe it or not, the horizontal orientation has the same gravitational potential energy as the vertical orientation. The top part of the grain (higher potential energy) exactly balances the bottom part of the grain (lower potential energy), so that it is equal to the horizontal configuration. Draw a picture and you'll see.
Mar
9
comment Statistical Mechanics: Most probable orientation of grain particle in gas chamber?
Don't worry about influencing. Right now it looks like you just want an answer for something from a university course. If you write down your thoughts, it looks like you worked for some kind of solution, and people will more likely respond. Edit your post with your thoughts.
Mar
9
comment Statistical Mechanics: Most probable orientation of grain particle in gas chamber?
You should put your ideas which you said you have in your question.
Mar
9
awarded  Excavator
Mar
9
revised Two ways to form SU(2) singlets?
fixed parenthesis in equations
Mar
9
accepted Two ways to form SU(2) singlets?
Mar
9
suggested suggested edit on Two ways to form SU(2) singlets?
Mar
7
comment How can I destroy earth with physics?
Your question isn't clear: you need to define "destroy". Is it sufficient to leave the Earth physically intact and ruin the geological landscape? or do you mean that it has to be shattered into a million pieces?
Mar
4
answered CP violation from the Electroweak SU(2)$_{weak,flavor}$ by $\int \theta F \wedge F $
Feb
27
accepted Is there a closed form expression for Landau-level eigenstates?
Feb
25
revised What does “mathematically well defined” quantum field theory mean?
Changed to a more descriptive title