Imaginary chemical potentials and the phase of the fermionic determinant

Abstract

A numerical technique is proposed for an efficient numerical determination of the average phase factor of the fermionic determinant continued to imaginary values of the chemical potential. The method is tested in QCD with eight flavors of dynamical staggered fermions. A direct check of the validity of analytic continuation is made on small lattices and a study of the scaling with the lattice volume is performed.

6 pages, 6 figures

References in corpus (3)

• The QCD Sign Problem for Small Chemical Potential
• The Sign Problem via Imaginary Chemical Potential
• Direct numerical computation of disorder parameters

Cited by in corpus (5)

• The strongly interacting Quark Gluon Plasma, and the critical behaviour of QCD at imaginary chemical potential
• Analytic continuation of the critical line: suggestions for QCD
• The critical line from imaginary to real baryonic chemical potentials in two-color QCD
• The Approach to the Thermodynamic Limit in Lattice QCD at μ\neq0
• Phases and properties of quark matter