Matter Instability in Theories with Modified Induced Gravity
Matter stability is a necessary condition to have a cosmologically viable model. Modified gravity in the spirit of f(R) theories suffers from matter instability in some subdomains of the model parameter space. It has been shown recently that the late-time cosmic speedup can be explained through an f...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2012/679156 |
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| _version_ | 1832567051384782848 |
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| author | Kourosh Nozari Faeze Kiani |
| author_facet | Kourosh Nozari Faeze Kiani |
| author_sort | Kourosh Nozari |
| collection | DOAJ |
| description | Matter stability is a necessary condition to have a cosmologically viable model. Modified gravity
in the spirit of f(R) theories suffers from matter instability in some subdomains of the model
parameter space. It has been shown recently that the late-time cosmic speedup can be explained
through an f(R)-modified induced gravity program. In this paper, we study the issue of matter
instability in a braneworld setup with modified induced gravity. |
| format | Article |
| id | doaj-art-ae2d4b8838124ada830cd423a7acc9b1 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-ae2d4b8838124ada830cd423a7acc9b12025-02-03T01:02:31ZengWileyAdvances in High Energy Physics1687-73571687-73652012-01-01201210.1155/2012/679156679156Matter Instability in Theories with Modified Induced GravityKourosh Nozari0Faeze Kiani1Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha, IranDepartment of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-95447, Babolsar, IranMatter stability is a necessary condition to have a cosmologically viable model. Modified gravity in the spirit of f(R) theories suffers from matter instability in some subdomains of the model parameter space. It has been shown recently that the late-time cosmic speedup can be explained through an f(R)-modified induced gravity program. In this paper, we study the issue of matter instability in a braneworld setup with modified induced gravity.http://dx.doi.org/10.1155/2012/679156 |
| spellingShingle | Kourosh Nozari Faeze Kiani Matter Instability in Theories with Modified Induced Gravity Advances in High Energy Physics |
| title | Matter Instability in Theories with Modified Induced Gravity |
| title_full | Matter Instability in Theories with Modified Induced Gravity |
| title_fullStr | Matter Instability in Theories with Modified Induced Gravity |
| title_full_unstemmed | Matter Instability in Theories with Modified Induced Gravity |
| title_short | Matter Instability in Theories with Modified Induced Gravity |
| title_sort | matter instability in theories with modified induced gravity |
| url | http://dx.doi.org/10.1155/2012/679156 |
| work_keys_str_mv | AT kouroshnozari matterinstabilityintheorieswithmodifiedinducedgravity AT faezekiani matterinstabilityintheorieswithmodifiedinducedgravity |