Particle Creation Amplification in Curved Space Due to Thermal Effects
نویسنده
چکیده
Carlos E. Laciana Instituto de Astronomı́a y F́ısica del Espacio Casilla de Correo 67 Sucursal 28, 1428 Buenos Aires, Argentina E-mail: [email protected] A physical system composed by a scalar field minimally coupled to gravity and a thermal reservoir, as in thermo field dynamics, all of then in curved space time, is considered. When the formalism of thermo field dynamics is generalized to the above mentioned case, an amplification in the number of created particles is predicted.
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ar X iv : h ep - t h / 96 10 11 6 v 1 1 6 O ct 1 99 6 THERMAL AND DYNAMICAL PARTICLE CREATION IN A CURVED GEOMETRY
A generalization of Termo Field Dynamics to 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 non linear 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 like red shift...
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