Thermal and Dynamical Particle Creation in a Curved Geometry
A generalization ofthermo field dynamicsto a curved geometry is proposed. In particular a neutral scalar field minimally coupled to gravity is considered as matter content in a Robertson-Walker metric. A nonlinear amplification in the particle creation is obtained, due to the altogether action of th...
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| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00034916_v264_n2_p95_Laciana |
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| Sumario: | A generalization ofthermo field dynamicsto a curved geometry is proposed. In particular a neutral scalar field minimally coupled to gravity is considered as matter content in a Robertson-Walker metric. A nonlinear amplification in the particle creation is obtained, due to the altogether action of thermal and geometric effects. As a consequence the frequencies in the system look red-shifted with respect to the case where the thermal creation is not taken into account. © 1998 Academic Press. |
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