Exact stochastic mean-field approach to the fermionic many-body problem.

  title={Exact stochastic mean-field approach to the fermionic many-body problem.},
  author={Olivier Juillet and Ph Chomaz},
  journal={Physical review letters},
  volume={88 14},
We investigate a reformulation of the dynamics of interacting fermion systems in terms of a stochastic extension of time-dependent Hartree-Fock equations. From a path-integral representation of the evolution operator, we show that the exact N-body state can be interpreted as a coherent average over Slater determinants evolving in a random mean-field. The imaginary time propagation is also presented and gives a similar scheme which converges to the exact ground state. In addition, the growth of… CONTINUE READING
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