Regularised quantum energy-momentum tensor for spinor fields in the Chitre-Hartle and Milne metrics

Details Regularised quantum energy-momentum tensor for spinor fields in the Chitre-Hartle and Milne metrics Regularised quantum energy-momentum tensor for spinor fields in the Chitre-Hartle and Milne metrics

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984cqgra...1..579s&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 1, Sept. 11, 1984, p. 579-590.

Physics

12

Cosmology, Gravitation Theory, Quantum Mechanics, Relativistic Theory, Space-Time Functions, Spinor Groups, Dirac Equation, Minkowski Space, Momentum Theory, Particle Theory, Stress Tensors

Scientific paper

Quantum effects in Chitre-Hartle (1977) and Milne spacetimes are investigated analytically using the regularization scheme of Zeldovich and Starobinsky (1971). The regularized vacuum expectation values of the quantum stress tensor for spin-1/2 fields are determined to be equal to zero, as is the case for scalar particles in a Friedman universe. Particle creation and vacuum polarization in Milne spacetime are found to be coordinate effects arising from the fact that it covers only a portion of the entire Minkowski spacetime.

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