Thomas-Fermi approximation to functional determinants in external gauge potentials.
- Author(s): Spence, CD
- Bander, M
- et al.
Published Web Locationhttps://doi.org/10.1103/physrevd.33.1113
The functional determinant and vacuum expectation value of a fermion field in an external gauge potential are evaluated in a Thomas-Fermi approximation. This approximation should be valid for slowly varying potentials. The expressions are readily transcribable to a lattice. We do not encounter the problem of doubling of fermionic degrees of freedom. © 1986 The American Physical Society.