Fermionic determinant as an overlap between bosonic vacua

Details Fermionic determinant as an overlap between bosonic vacua Fermionic determinant as an overlap between bosonic vacua

1998-03-05

arxiv.org/abs/hep-th/9803045v2

Phys.Lett. B432 (1998) 191-195

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, Latex; added reference, minor comments added

Scientific paper

10.1016/S0370-2693(98)00602-9

We find a representation for the determinant of a Dirac operator in an even number $D= 2 n$ of Euclidean dimensions as an overlap between two different vacua, each one corresponding to a bosonic theory with a quadratic action in $2 n + 1$ dimensions, with identical kinetic terms, but differing in their mass terms. This resembles the overlap representation of a fermionic determinant (although bosonic fields are used here). This representation may find applications to lattice field theory, as an alternative to other bosonized representations for Dirac determinants already proposed.

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