Effective Lagrangian and the back-reaction problem in a self-interacting O(N) scalar theory in curved spacetime.


A derivation of the one-loop effective Lagrangian in the self-interacting O(N) scalar theory, in slowly varying gravitational fields, is presented (using ζ-regularization and heat-kernel techniques). The result is given in terms E-mail: eli@ebubecm1.bitnet, eli@zeta.ecm.ub.es E-mail: klaus@ebubecm1.bitnet. Alexander von Humboldt Foundation Fellow. E-mail… (More)


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