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On cosmological perturbations in FRW model with scalar field and false vacuum decay | | Arsen Khvedelidze
; George Lavrelashvili
; Takahiro Tanaka
; | | Date: |
15 Dec 1999 | | Journal: | Phys.Rev. D62 (2000) 083501 | | Subject: | gr-qc | | Abstract: | The unconstrained reduced action corresponding to the dynamics of scalar fluctuations about the Friedmann-Robertson-Walker (FRW) background is derived using Dirac’s method of description of singular Lagrangian systems. The results are applied to so-called negative mode problem in description of tunneling transitions with gravity. With our special choice of physical variable, the kinetic term of the reduced action has a conventional signature for a wide class of models. In this representation, the existence of a negative mode justifying the false vacuum decay picture turns out to be manifest. We also explain how the present result becomes consistent with the previously proved ``no negative mode (supercritical supercurvature mode) theorem’’. | | Source: | arXiv, gr-qc/0001041 | | Services: | Forum | Review | PDF | Favorites | |
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