States of Low Energy on Robertson-Walker Spacetimes
| dc.creator | Olbermann, Heiner | |
| dc.date | 2007-04-23 | |
| dc.date | 2007-04-30 | |
| dc.date.accessioned | 2026-07-07T10:59:42Z | |
| dc.date.available | 2026-07-07T10:59:42Z | |
| dc.description | We construct a new class of physical states of the free Klein-Gordon field in Robertson-Walker spacetimes. This is done by minimizing the expectation value of smeared stress-energy. We get an explicit expression for the state depending on the smearing function. We call it a state of low energy. States of low energy are an improvement of the concept of adiabatic vacua on Robertson-Walker spacetimes. The latter are approximations of the former. It is shown that states of low energy are Hadamard states. | |
| dc.description | 24 pages, minor changes, acknoledgements added | |
| dc.identifier | https://arxiv.org/abs/0704.2986 | |
| dc.identifier | http://arxiv.org/abs/0704.2986 | |
| dc.identifier | Class.Quant.Grav.24:5011-5030,2007 | |
| dc.identifier | doi:10.1088/0264-9381/24/20/007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/187495 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | States of Low Energy on Robertson-Walker Spacetimes | |
| dc.type | text |