Solution of the sign problem in the Potts model at fixed fermion number

Alexandru, Andrei; Bergner, Georg; Schaich, David Alexander; Wenger, Urs (2018). Solution of the sign problem in the Potts model at fixed fermion number. Physical review. D - particles, fields, gravitation, and cosmology, 97(11) American Physical Society 10.1103/PhysRevD.97.114503

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We consider the heavy-dense limit of QCD at finite fermion density in the canonical formulation and approximate it by a three-state Potts model. In the strong-coupling limit, the model is free of the sign problem. Away from the strong coupling, the sign problem is solved by employing a cluster algorithm which allows to average each cluster over the Zð3Þ sectors. Improved estimators for physical quantities can be constructed by taking into account the triality of the clusters, that is, their transformation properties with respect to Zð3Þ transformations.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Alexandru, Andrei; Schaich, David Alexander and Wenger, Urs

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

30 Aug 2018 15:47

Last Modified:

23 Oct 2019 16:53

Publisher DOI:

10.1103/PhysRevD.97.114503

ArXiv ID:

1712.07585

BORIS DOI:

10.7892/boris.119678

URI:

https://boris.unibe.ch/id/eprint/119678

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