IMPROVEMENT IN THE NEGATIVE-SIGN PROBLEM IN NUMERICAL-CALCULATIONS OFA QUANTUM SPIN SYSTEM

Authors
MUNEHISA T MUNEHISA Y
Citation
T. Munehisa et Y. Munehisa, IMPROVEMENT IN THE NEGATIVE-SIGN PROBLEM IN NUMERICAL-CALCULATIONS OFA QUANTUM SPIN SYSTEM, Physical review. B, Condensed matter, 49(5), 1994, pp. 3347-3351
Citations number
9
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
49
Issue
5
Year of publication
1994
Pages
3347 - 3351
Database
ISI
SICI code
0163-1829(1994)49:5<3347:IITNPI>2.0.ZU;2-P
Abstract
We propose an approach to the numerical study of quantum spin systems. Our method is based on the fact that one can use any set of states fo r the path integral as long as it is a complete set. We apply our meth od to one-dimensional quantum spin systems with next-to-nearest-neighb or interactions. We find significant improvement in the negative-sign problem.