Physics
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978phrvd..18.4422b&link_type=abstract
Physical Review D - Particles and Fields, 3rd Series, vol. 18, Dec. 15, 1978, p. 4422-4434.
Physics
10
Cosmology, Momentum Theory, Particle Theory, Relativistic Particles, Space-Time Functions, Stress Tensors, Astronomical Models, Asymptotic Methods, Conformal Mapping, Equations Of State, Field Theory (Physics), Kinetic Energy, Normalizing, Quantum Mechanics, Scalars, Vacuum
Scientific paper
A new regularization scheme is developed for calculating expectation values of the energy-momentum tensor of a quantized scalar field in Robertson-Walker space-times. Using this regularized stress tensor we consider a definition for the vacuum state of the scalar field on any initial hypersurface. Asymptotic methods are developed to investigate the structure of both the divergent and finite terms of the stress tensor when evaluated in this state. The conformal anomaly is discussed in the context of this model. It does not naturally enter into the analysis and we argue that its inclusion is unnecessary.
Brown Richard M.
Dutton C. R.
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