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Article overview
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A First-Quantized Formalism for Cosmological Particle Production | Alex J. Hamilton
; Daniel Kabat
; Maulik K. Parikh
; | Date: |
19 Nov 2003 | Journal: | JHEP 0407 (2004) 024 | Subject: | hep-th astro-ph gr-qc | Abstract: | We show that the amount of particle production in an arbitrary cosmological background can be determined using only the late-time positive-frequency modes. We don’t refer to modes at early times, so there is no need for a Bogolubov transformation. We also show that particle production can be extracted from the Feynman propagator in an auxiliary spacetime. This provides a first-quantized formalism for computing particle production which, unlike conventional Bogolubov transformations, may be amenable to a string-theoretic generalization. | Source: | arXiv, hep-th/0311180 | Services: | Forum | Review | PDF | Favorites |
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