Path integrals and unitarity in quantum cosmology

Details Path integrals and unitarity in quantum cosmology Path integrals and unitarity in quantum cosmology

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991nuphb.357..289l&link_type=abstract

Nuclear Physics B, Volume 357, Issue 1, p. 289-307.

Physics

Nuclear Physics

1

Scientific paper

We explore a simple cosmological model in the minisuperspace approach. The global structure of the model leads to subtleties in its quantization which are treated using the affine, rather than the Heisenberg, algebra. We develop a path-integral formulation for this algebra, and apply it to our cosmological model. We investigate the Friedmann-Robertson-Walker universe with a scalar field as source and discuss in detail the constraint that the universe have positive radius.

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