43 reputation
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location Illinois
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visits member for 2 years, 8 months
seen 12 hours ago

Jul
17
asked How is it possible to combine various techniques in cold atom experiments?
May
4
comment Intuition behind modeling quantum impurities as two-level systems
Thanks for pointing me in the right direction. I read some more papers on the topic and saw that it is about occupancy as you say. If you copy+paste your comment above as a full answer below, I will select it. Otherwise, I'll try to write up a more detailed explanation (answering own question) some weeks later ...
Apr
29
revised Intuition behind modeling quantum impurities as two-level systems
additional point 2
Apr
29
asked Intuition behind modeling quantum impurities as two-level systems
Jul
8
comment relative phase/sign in $\Psi$ after exchange of composite particles with angular momenta
Ok, then I must have misunderstood what "relative angular momentum" meant. So "relative" here comes from the relative coordinates of the two atoms instead of having to do with the difference. ... I was going in the wrong direction from the beginning, trying to bring in z-projections and Clebsch-Gordan coefficients etc. Thanks for the feedback. I actually made an edit stating my real question, about the (-1)^L factor. I may be able to answer it myself given some more time to think about it, but I'll leave it hanging here.
Jul
8
revised relative phase/sign in $\Psi$ after exchange of composite particles with angular momenta
L and K are clear now. My real question was about (-1)^L
Jul
7
asked relative phase/sign in $\Psi$ after exchange of composite particles with angular momenta
May
12
comment few fermions in a harmonic trap — position density matrix from diagrammatics
I actually tried the "Slater" version with N=3 too. Everything except the "diagrammatic" version seem to agree fairly closely. I guess for N=3, my diagrammatic reasoning is somehow wrong.
May
11
awarded  Scholar
May
11
awarded  Supporter
May
11
accepted few fermions in a harmonic trap — position density matrix from diagrammatics
May
11
comment few fermions in a harmonic trap — position density matrix from diagrammatics
Sorry for the long delay in thanking you. I have just got around to working plotting your Ψ with Mathematica ("Slater") and found it to agree exactly with the "diagrammatic" version. The 2 curves lie right on top of each other. So it looks like there was a bug in my path integral Monte Carlo code ... Thanks again!
Dec
13
revised few fermions in a harmonic trap — position density matrix from diagrammatics
sentence cleanup
Dec
13
awarded  Editor
Dec
13
revised few fermions in a harmonic trap — position density matrix from diagrammatics
/background/statement/
Dec
13
awarded  Student
Dec
12
asked few fermions in a harmonic trap — position density matrix from diagrammatics