Inhomogeneity-Induced Cosmic Acceleration in a Dust Universe
碩士 === 國立臺灣大學 === 物理研究所 === 94 === It is the common consensus that the expansion of a universe always slows down if the gravity provided by the energy sources therein is universally attractive. To examine this point we find counter-examples for the spherically symmetric dust fluid described by the L...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/10607839981386873891 |
| Summary: | 碩士 === 國立臺灣大學 === 物理研究所 === 94 === It is the common consensus that the expansion of a universe always
slows down if the gravity provided by the energy sources therein
is universally attractive. To examine this point we find
counter-examples for the spherically symmetric dust fluid
described by the Lemaitre-Tolman-Bondi solution. Thus, the
validity of this naive consensus is indeed doubtful and the
effects of inhomogeneities should be restudied. The example opens
a new perspective for understanding the evolution of our universe.
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