Classical effective Hamiltonians, Wigner functions, and the sign problem
In the functional-integral technique an auxiliary field, coupled to appropriate operators such as spins, linearizes the interaction term in a quantum many-body system. The partition function is then averaged over this time-dependent stochastic field. Quantum Monte Carlo methods evaluate this integra...
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| Format: | Default Article |
| Published: |
1995
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| Online Access: | https://hdl.handle.net/2134/1311 |
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