Biswas, Tirthabir and Gerwick, Erik and Koivisto, Tomi and Mazumdar, Anupam (2012) Towards singularity and ghost free theories of gravity. Physical Review Letters, 108 (3). ISSN 1079-7114
![[img]](http://eprints.lancs.ac.uk/style/images/fileicons/application_pdf.png)
| PDF - Published Version Download (103Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevLett.108.031101
Abstract
We present the most general covariant ghost-free gravitational action in a Minkowski vacuum. Apart from the much studied f(R) models, this includes a large class of non-local actions with improved UV behavior, which nevertheless recover Einstein's general relativity in the IR.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review Letters |
| Additional Information: | 4 pages; redundancies in action eliminated; references added and a few minor typos corrected © 2012 American Physical Society |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 55943 |
| Deposited By: | ep_importer_pure |
| Deposited On: | 19 Jul 2012 16:39 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 20:44 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/55943 |
Actions (login required)
| View Item |
