Fermion bag solutions to sign problems


Journal Article

The fermion bag approach provides new solutions to sign problems. Here we show this by using a simple example of a lattice Yukawa model constructed with staggered fermions and containing a Z2 chiral symmetry. We argue that in the conventional formulation of the model the fermion determinant is real but not necessarily positive. However, when formulated in terms of fermion bags, the sign problem is absent. The solution requires the fermionic part to be formulated in terms of fermion bags, while the bosonic part needs to be reformulated in world-line variables.

Full Text

Duke Authors

Cited Authors

  • Chandrasekharan, S

Published Date

  • January 1, 2012

Published In

Volume / Issue

  • Part F130497 /

Electronic International Standard Serial Number (EISSN)

  • 1824-8039

Digital Object Identifier (DOI)

  • 10.22323/1.164.0224

Citation Source

  • Scopus