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Modified dispersion relations in extra dimensions
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DOI：10.1016/j.physletb.2010.11.067.png)
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摘要
En 中文
It has recently been shown that the thermodynamics of a FRW universe can be fully derived using the generalized uncertainty principle (CUP) in extra dimensions as a primary input. There is a phenomenologically close relation between the CUP and Modified Dispersion Relations (MDR). However, the form of the MDR in theories with extra dimensions is as yet not known. The purpose of this Letter is to derive the MDR in extra dimensional scenarios. To achieve this goal, we focus our attention on the thermodynamics of a FRW universe within a proposed MDR in an extra dimensional model universe. We then compare our results with the well-known results for the thermodynamics of a FRW universe in an extra dimensional CUP setup. The result shows that the entropy functionals calculated in these two approaches are the same, pointing to a possible conclusion that these approaches are equivalent. In this way, we derive the MDR form in a model universe with extra dimensions that would have interesting implications on the construction of the ultimate quantum gravity scenario. (C) 2010 Elsevier B.V. All rights reserved.
Keyword:
Generalized uncertainty principle
Modified dispersion relations
Extra dimensions
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期刊
IF:
4.5
论文数:
3.2W
被引数:
7.3W
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引用论文
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