Quantum Field Theory in Two-Dimensional Schwarzschild-de Sitter Spacetime. II ---Space with a Collapsing Star---

Details Quantum Field Theory in Two-Dimensional Schwarzschild-de Sitter Spacetime. II ---Space with a Collapsing Star--- Quantum Field Theory in Two-Dimensional Schwarzschild-de Sitter Spacetime. II ---Space with a Collapsing Star---

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pthph..83.1126t&link_type=abstract

Progress of Theoretical Physics, Vol. 83, No. 6, pp. 1126-1139

Physics

3

Scientific paper

A quantized conformal scalar field is studied in a two-dimensional asymptotically de Sitter spacetime with a collapsing star. It is shown that there is a quantum state such that the renormalized expectation value of the stress tensor operator in the state is regular everywhere in the spacetime. We present an example of such a state in which the stress tensor not only respects the de Sitter symmetry asymptotically in the past and future but also remains static before the star begins to collapse.

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