Quantum Weak Energy Inequalities for the Dirac field in Flat Spacetime

Details Quantum Weak Energy Inequalities for the Dirac field in Flat Spacetime Quantum Weak Energy Inequalities for the Dirac field in Flat Spacetime

2003-07-23

arxiv.org/abs/gr-qc/0307098v2

Phys.Rev.D68:105010,2003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, REVTeX4, version to appear in Phys Rev D

Scientific paper

10.1103/PhysRevD.68.105010

Quantum Weak Energy Inequalities (QWEIs) have been established for a variety of quantum field theories in both flat and curved spacetimes. Dirac fields are known (by a result of Fewster and Verch) to satisfy QWEIs under very general circumstances. However this result does not provide an explicit formula for the QWEI bound, so its magnitude has not previously been determined. In this paper we present a new and explicit QWEI bound for Dirac fields of arbitrary mass in four-dimensional Minkowski space. We follow the methods employed by Fewster and Eveson for the scalar field, modified to take account of anticommutation relations. A key ingredient is an identity for Fourier transforms established by Fewster and Verch. We also compare our QWEI with those previously obtained for scalar and spin-1 fields.

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