Loop Updates for Quantum Monte Carlo Simulations in the Canonical Ensemble
Journal Article
·
· Physical Review Letters
- Universiteit Gent-UGent, Vakgroep Subatomaire en Stralingsfysica Proeftuinstraat 86, B-9000 Gent (Belgium)
We present a new nonlocal updating scheme for quantum Monte Carlo simulations, which conserves particle number and other symmetries. It allows exact symmetry projection and direct evaluation of the equal-time Green's function and other observables in the canonical ensemble. The method is applicable to a wide variety of systems. We show results for bosonic atoms in optical lattices, neutron pairs in atomic nuclei, and electron pairs in ultrasmall superconducting grains.
- OSTI ID:
- 20775233
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 96; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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