Particle creation and vacuum polarisation in isotropic universe

Details Particle creation and vacuum polarisation in isotropic universe Particle creation and vacuum polarisation in isotropic universe

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jpha...13.2057g&link_type=abstract

Journal of Physics A - Mathematical and General, vol. 13, June 1980, p. 2057-2065.

Physics

11

Astronomical Models, Cosmology, Gravitation Theory, Particle Production, Quantum Theory, Universe, Asymptotic Methods, Gravitational Fields, Hamiltonian Functions, Isotropy, Polarization (Waves), Space-Time Functions, Stress Tensors

Scientific paper

The particle interpretation of quantized fields in homogeneous isotropic space-time is given which is based on the diagonalization of the Hamiltonian constructed via the metrical stress-energy tensor (SET). This interpretation and the regularization procedure of Zeldovich and Starobinsky allows to obtain the total renormalized vacuum expectation values of SET which include both vacuum polarization and non-local terms describing the creation of particles. The case of the explicitly soluble cosmological model with initial singularity which is asymptotically static in the future is considered. The results of the calculation of the total SET in realistic Friedman cosmological models are presented.

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