Tseng, Chien-Yao (2013) Decoherence problem in an ekpyrotic phase. Physical Review D, 87 (2). Art. No. 023518 . ISSN 2470-0010. doi:10.1103/PhysRevD.87.023518. https://resolver.caltech.edu/CaltechAUTHORS:20130221-090840098
|
PDF
- Published Version
See Usage Policy. 190kB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20130221-090840098
Abstract
Quantum decoherence and the transition to semiclassical behavior during inflation have been extensively considered in the literature. In this paper, we use a simple model to analyze the same process in ekpyrosis. Our result is that the quantum to classical transition would not happen during an ekpyrotic phase even for superhorizon modes, and therefore the fluctuations cannot be interpreted as classical. This implies the prediction of a scale-free power spectrum in an ekpyrotic/cyclic universe model requires more inspection.
| Item Type: | Article | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Related URLs: |
| |||||||||
| Additional Information: | © 2013 American Physical Society. Received 15 October 2012; published 24 January 2013. This work is supported by the U.S. Department of Energy. We especially thank S. M. Carroll for very useful comments and suggestions. | |||||||||
| Group: | Caltech Theory | |||||||||
| Funders: |
| |||||||||
| Issue or Number: | 2 | |||||||||
| Classification Code: | PACS: 98.80.Cq | |||||||||
| DOI: | 10.1103/PhysRevD.87.023518 | |||||||||
| Record Number: | CaltechAUTHORS:20130221-090840098 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130221-090840098 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 37041 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 22 Feb 2013 23:47 | |||||||||
| Last Modified: | 09 Nov 2021 23:26 |
Repository Staff Only: item control page
