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seen Apr 13 at 23:59

Mar
15
accepted What are “parity considerations” in deciding the form of the Hamiltonian?
Mar
14
comment What are “parity considerations” in deciding the form of the Hamiltonian?
Thanks! Now I understood that $\langle g | \hat{z} | g \rangle$ since it is the dot product of two electron states with different parity. I have a new question now (maybe I should start a new topic): shouldn't there be an "overall parity operator" that commutes with $\hat{H}_{el} + \hat{H}_{phot} + \hat{H}_{int}$, since even considering the electromagnetic interaction the overall parity should be conserved.
Mar
13
awarded  Yearling
Mar
13
asked What are “parity considerations” in deciding the form of the Hamiltonian?
Feb
14
accepted Is crystal momentum an operator?
Feb
12
answered Is crystal momentum an operator?
Feb
12
asked Is crystal momentum an operator?
Feb
7
asked What are the assumptions behind “term symbols”?
Feb
2
accepted How does QFT help with defining measurement in Quantum Mechanics?
Jan
30
asked How does QFT help with defining measurement in Quantum Mechanics?
Jan
19
accepted Ising model for ferromagnetism is not intuitive
Jan
19
comment Ising model for ferromagnetism is not intuitive
Thank you for your answer. After understanding what is going on I found a nice explanation that was helpful for me, too.
Jan
18
asked Ising model for ferromagnetism is not intuitive
Jan
16
accepted Is it possible to Vectorialize Quantum Field Theories?
Jan
6
asked Is it possible to Vectorialize Quantum Field Theories?
Dec
29
awarded  Supporter
Dec
29
comment Is it possible to “cook” pasta at room temperature with low enough pressure?
Ehm... I can confirm that leaving the pasta in the cold water does almost the same job as cooking it in the hot water. One time someone told me that she had problems with the pasta she prepared and asked me to taste it and find out what went wrong. I couldn't answer as the taste was of normally cooked pasta. Afterwards, she said she actually did not heat the water
Nov
11
accepted Is water a gas at critical density, room temperature?
Nov
11
awarded  Editor
Nov
11
revised Is water a gas at critical density, room temperature?
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