Adiabatic regularization method in inhomogeneous spacetime

Wung Hong Huang

Research output: Contribution to journalArticlepeer-review

Abstract

It is well known that the adiabatic regularization method is applicable to evaluate numerically the renormalized stress-energy tensor for matter in homogeneous spacetime. In this paper we will extend this method to the more general spacetimes with a small inhomogeneity which is invariant under spatial reflection. The difficulty of mode-mixing behavior arising from the inhomogeneity of spacetime is overcome and a possible way of obtaining the WKB solution of the time-dependent mode function under the early-time approximation is presented. Our prescriptions are useful to study the back reaction of a quantized field in the early universe with a small inhomogeneity.

Original languageEnglish
Pages (from-to)40-44
Number of pages5
JournalPhysics Letters B
Volume258
Issue number1-2
DOIs
Publication statusPublished - 1991 Apr 4

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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