Short time evolved wave functions for solving quantum many-body problems

Details Short time evolved wave functions for solving quantum many-body problems Short time evolved wave functions for solving quantum many-body problems

2003-06-03

arxiv.org/abs/cond-mat/0306077v1

Phys. Rev. B 68, 134510 (2003)

Physics

Condensed Matter

5 pages, 3 figures, 1 table

Scientific paper

10.1103/PhysRevB.68.134510

The exact ground state of a strongly interacting quantum many-body system can be obtained by evolving a trial state with finite overlap with the ground state to infinite imaginary time. In this work, we use a newly discovered fourth order positive factorization scheme which requires knowing both the potential and its gradients. We show that the resultaing fourth order wave function alone, without further iterations, gives an excellent description of strongly interacting quantum systems such as liquid 4He, comparable to the best variational results in the literature.

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