Hadamard singularity and quantum states in Bianchi type-I space-time

Details Hadamard singularity and quantum states in Bianchi type-I space-time Hadamard singularity and quantum states in Bianchi type-I space-time

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..33.3581b&link_type=abstract

Physical Review D (Particles and Fields), Volume 33, Issue 12, 15 June 1986, pp.3581-3589

Physics

8

Lagrangian And Hamiltonian Approach

Scientific paper

The construction of physical states for a scalar quantum field in a Bianchi type-I universe is analyzed. A local constraint based upon the Hadamard form of the anticommutator function is implemented. The constraints imposed on the Fock space by this requirement are derived and the unitary equivalence between different representations of canonical commutation relations is shown. Within this formalism we analyze recently proposed Fock-space constructions and we show the uniqueness of the inflationary vacuum.

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