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Cosmological solutions in multidimensional model with multiple exponential potential | | V. D. Ivashchuk
; V. N. Melnikov
; A.B. Selivanov
; | | Date: |
18 Aug 2003 | | Journal: | JHEP 0309 (2003) 059 | | Subject: | hep-th | | Abstract: | A family of cosmological solutions with $(n+1)$ Ricci-flat spaces in the theory with several scalar fields and multiple exponential potential is obtained when coupling vectors in exponents obey certain relations. Two subclasses of solutions with power-law and exponential behaviour of scale factors are singled out. It is proved that power-law solutions may take place only when coupling vectors are linearly independent and exponential dependence occurs for linearly dependent set of coupling vectors. A subfamily of solutions with accelerated expansion is singled out. A generalized isotropization behaviours of certain classes of general solutions are found. In quantum case exact solutions to Wheeler-DeWitt equation are obtained and special "ground state" wave functions are considered. | | Source: | arXiv, hep-th/0308113 | | Services: | Forum | Review | PDF | Favorites | |
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