Stable Palatini f ( R ) braneworld
We consider the static domain wall braneworld scenario constructed from the Palatini formalism f(R) theory. We check the self-consistency under scalar perturbations. By using the scalar-tensor formalism we avoid dealing with the higher-order equations. We develop the techniques to deal with the coup...
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Veröffentlicht in: | Physical review. D 2018-07, Vol.98 (2), Article 024027 |
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description | We consider the static domain wall braneworld scenario constructed from the Palatini formalism f(R) theory. We check the self-consistency under scalar perturbations. By using the scalar-tensor formalism we avoid dealing with the higher-order equations. We develop the techniques to deal with the coupled system. We show that under some conditions, the scalar perturbation simply oscillates with time, which guarantees the stability. We also discuss the localization condition of the scalar mode by analyzing the effective potential and the fifth-dimensional profile of the scalar mode. We apply these results to an explicit example, and show that only some of the solutions allow for stable scalar perturbations. These stable solutions also give nonlocalizable massless mode. This is important for reproducing a viable four-dimensional gravity. |
doi_str_mv | 10.1103/PhysRevD.98.024027 |
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We check the self-consistency under scalar perturbations. By using the scalar-tensor formalism we avoid dealing with the higher-order equations. We develop the techniques to deal with the coupled system. We show that under some conditions, the scalar perturbation simply oscillates with time, which guarantees the stability. We also discuss the localization condition of the scalar mode by analyzing the effective potential and the fifth-dimensional profile of the scalar mode. We apply these results to an explicit example, and show that only some of the solutions allow for stable scalar perturbations. These stable solutions also give nonlocalizable massless mode. 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D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gu, Bao-Min</au><au>Liu, Yu-Xiao</au><au>Zhong, Yuan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Stable Palatini f ( R ) braneworld</atitle><jtitle>Physical review. D</jtitle><date>2018-07-15</date><risdate>2018</risdate><volume>98</volume><issue>2</issue><artnum>024027</artnum><issn>2470-0010</issn><eissn>2470-0029</eissn><abstract>We consider the static domain wall braneworld scenario constructed from the Palatini formalism f(R) theory. We check the self-consistency under scalar perturbations. By using the scalar-tensor formalism we avoid dealing with the higher-order equations. We develop the techniques to deal with the coupled system. We show that under some conditions, the scalar perturbation simply oscillates with time, which guarantees the stability. We also discuss the localization condition of the scalar mode by analyzing the effective potential and the fifth-dimensional profile of the scalar mode. We apply these results to an explicit example, and show that only some of the solutions allow for stable scalar perturbations. These stable solutions also give nonlocalizable massless mode. This is important for reproducing a viable four-dimensional gravity.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.98.024027</doi><oa>free_for_read</oa></addata></record> |
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subjects | Domain walls Formalism Tensors |
title | Stable Palatini f ( R ) braneworld |
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