Fermion bag solutions to some sign problems in four-fermion field theories

Journal Article

Lattice four-fermion models containing N flavors of staggered fermions, which are invariant under Z 2 and U(1) chiral symmetries, are known to suffer from sign problems when formulated using the auxiliary field approach. Although these problems have been ignored in previous studies, they can be severe. Here we show that the sign problems disappear when the models are formulated in the fermion bag approach, allowing us to solve them rigorously for the first time. © 2012 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Chandrasekharan, S; Li, A

Published Date

  • May 22, 2012

Published In

Volume / Issue

  • 85 / 9

Electronic International Standard Serial Number (EISSN)

  • 1550-2368

International Standard Serial Number (ISSN)

  • 1550-7998

Digital Object Identifier (DOI)

  • 10.1103/PhysRevD.85.091502

Citation Source

  • Scopus