A path integral centroid molecular dynamics method for Bose and Fermi statistics

We propose a path integral centroid molecular dynamics (CMD) method extende d to Bose and Fermi statistics. An extended method of path integral molecul ar dynamics (PIMD) for such statistics is also developed as a technique of calculations of static properties. Bose PIMD and CMD simulations have been performed for bulk liquid He-4 and ideal Bose gas, respectively. The remnan t of lambda transition is observed for bulk liquid He-4, while the effect o f Bose statistics on the centroid dynamics spanning several nanoseconds is observed for ideal Bose gas. (C) 2001 Elsevier Science B.V. All rights rese rved.