Benini, Marco and Dappiaggi, Claudio and Murro, Simone (2014) Radiative observables for linearized gravity on asymptotically flat spacetimes and their boundary induced states. JOURNAL OF MATHEMATICAL PHYSICS, 55 (8): 082301. ISSN 0022-2488, 1089-7658
Full text not available from this repository. (Request a copy)Abstract
We discuss the quantization of linearized gravity on globally hyperbolic, asymptotically flat, vacuum spacetimes, and the construction of distinguished states which are both of Hadamard form and invariant under the action of all bulk isometries. The procedure, we follow, consists of looking for a realization of the observables of the theory as a sub-algebra of an auxiliary, non-dynamical algebra constructed on future null infinity T+. The applicability of this scheme is tantamount to proving that a solution of the equations of motion for linearized gravity can be extended smoothly to T+. This has been claimed to be possible provided that a suitable gauge fixing condition, first written by Geroch and Xanthopoulos ["Asymptotic simplicity is stable," J. Math. Phys. 19, 714 (1978)], is imposed. We review its definition critically, showing that there exists a previously unnoticed obstruction in its implementation leading us to introducing the concept of radiative observables. These constitute an algebra for which a Hadamard state induced from null infinity and invariant under the action of all spacetime isometries exists and it is explicitly constructed. (C) 2014 AIP Publishing LLC.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM-FIELD THEORY; CONSTRUCTION; QUANTIZATION; UNIQUENESS; ENERGY; |
| Subjects: | 500 Science > 510 Mathematics |
| Divisions: | Mathematics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 Sep 2019 08:22 |
| Last Modified: | 04 Sep 2019 08:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9771 |
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