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loewe
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5 votes
1 answer
727 views

Fermionic operators, bipartite systems and partial traces

0 votes
1 answer
970 views

Fermi golden rule: occupation factor

13 votes
2 answers
1k views

Numerical Simulation of Stochastic Master Equation using Stochastic Schrödinger Equation (Wave Function Monte Carlo)

0 votes
0 answers
577 views

Avoided crossings - number of conditions

1 vote
0 answers
709 views

Analytic continuation from Matsubara frequencies: choice of branch cut of logarithms

4 votes
2 answers
714 views

Noether current: commute or not commute?

2 votes
1 answer
429 views

Green function and Conservation of Momentum

4 votes
0 answers
2k views

Current density operator 2nd quantization

3 votes
1 answer
153 views

Why is the symmetric phase in a Bose gas not superfluid?