# Self-consistent solution to a fermion determinant with space dependent fields

## Description

Abstract A numerical routine is provided which allows to compute and minimize an energy functional involving a fermion determinant. Such determinants appear whenever fermion degrees of freedom which couple to space-dependent boson fields are treated by functional integral techniques. The energy functional is evaluated by summing over the eigenvalues of a one-particle Dirac Hamiltonian. In order to minimize the energy functional the corresponding eigenfunctions are used to construct the equation of mot... Title of program: chisol Catalogue Id: ACVA_v1_0 Nature of problem Quark fields are integrated out from the Nambu-Jona-Lasinio model yielding a determinant which involves composite meson fields. The fermion determinant is evaluated for static but space-dependent meson field configurations. The configuration which minimizes the corresponding energy functional is constructed self-consistently. Versions of this program held in the CPC repository in Mendeley Data ACVA_v1_0; chisol; 10.1016/0010-4655(94)90129-5 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)