Complex zeros of the partition function for compact lattice QED

A general method for the study of the complex zeros of the partition function for lattice theories with fermions is applied to compact U(1) with dynamical fermions. In particular, we obtain the zeros of the partition function on the complex quark mass plane. On a small 4 4 lattice we study in a syst...

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Bibliographic Details
Published in:Nuclear physics. B 1992-11, Vol.386 (3), p.683-700
Main Authors: Barbour, I.M., Bell, A.J., Bernaschi, M., Salina, G., Vladikas, A.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
Quantum electrodynamics
Specific theories and interaction models
particle systematics
The physics of elementary particles and fields
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Summary:A general method for the study of the complex zeros of the partition function for lattice theories with fermions is applied to compact U(1) with dynamical fermions. In particular, we obtain the zeros of the partition function on the complex quark mass plane. On a small 4 4 lattice we study in a systematic way the dependence of the zeros on the theory's parameters, on lattice artefacts and on the various tuning parameters we have implemented.
ISSN:0550-3213
1873-1562
DOI:10.1016/0550-3213(92)90633-M