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Quantum Fields in Curved Space by P. C. W. Davies, N. D. Birrell

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9

Interacting fields

Once the theory of free quantum fields in curved spacetime had been worked out, the most natural extension was to include the effects of non-gravitational self and mutual interactions. Although this topic is still being developed, the basic framework is well established, and in this final chapter we outline the formal steps necessary for the computation of particle creation effects and the renormalization of Tμv.

Two questions immediately spring to mind once interactions are included. The first is to what extent interactions ...

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