Rotation Operator vs Particle Creation in a Curved Space Time

Carlos E. Laciana

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arXiv · hep-th/9610117

Rotation Operator vs Particle Creation in a Curved Space Time

Carlos E. Laciana

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Abstract

Taking into account a neutral massive scalar field minimally coupled to gravity, in a Robertson-Walker metric, it is shown that when the final state is connected with the initial one by means of a Bogoliubov transformation, which does not include the single-mode rotation operator, the mean value of created particles is conserved. When the rotation operator is considered, it is still possible to use the approach of single-mode squeezed operators and get the entropy as the logarithm of the created particles.

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Carlos E. Laciana. 1996-10-16. Rotation Operator vs Particle Creation in a Curved Space Time. https://arxiv.org/abs/hep-th/9610117

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