Renormalised fermion vacuum expectation values on anti-de Sitter space-time
arXiv:1505.04962 · doi:10.1016/j.physletb.2015.08.045
Abstract
The Schwinger-de Witt and Hadamard methods are used to obtain renormalised vacuum expectation values for the fermion condensate, charge current and stress-energy tensor of a quantum fermion field of arbitrary mass on four-dimensional anti-de Sitter space-time. The quantum field is in the global anti-de Sitter vacuum state. The results are compared with those obtained using the Pauli-Villars and zeta-function regularisation methods, respectively.
7 pages, no figures, conclusions expanded, accepted for publication in Physics Letters B
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