Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725233 | Physics Letters B | 2007 | 6 Pages |
Abstract
We show that the phase transition from the decelerating universe to the accelerating universe, which is of relevance to the cosmological coincidence problem, is possible in the semiclassically quantized two-dimensional dilaton gravity by taking into account the noncommutative field variables during the finite time. Initially, the quantum-mechanically induced energy from the noncommutativity among the fields makes the early universe decelerate and subsequently the universe is accelerating because the dilaton driven cosmology becomes dominant later.
Related Topics
Physical Sciences and Engineering
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Authors
Wontae Kim, Myung Seok Yoon,