Sen, Ashoke (2003) Time and tachyon International Journal of Modern Physics A, 18 (26). pp. 4869-4888. ISSN 0217-751X
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Official URL: http://www.worldscinet.com/ijmpa/18/1826/S0217751X...
Related URL: http://dx.doi.org/10.1142/S0217751X03015313
Abstract
Recent analysis suggests that the classical dynamics of a tachyon on an unstable Dbrane is described by a scalar Born-Infeld type action with a runaway potential. The classical configurations in this theory at late time are in one to one correspondence with the configuration of a system of non-interacting (incoherent), non-rotating dust. We discuss some aspects of canonical quantization of this field theory coupled to gravity, and explore, following earlier work on this subject, the possibility of using the scalar field (tachyon) as the definition of time in quantum cosmology. At late 'time' we can identify a subsector in which the scalar field decouples from gravity and we recover the usual Wheeler-de Witt equation of quantum gravity.
Item Type: | Article |
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Source: | Copyright of this article belongs to World Scientific Publishing Company. |
Keywords: | Tachyon; Wheeler-de Witt Equation |
ID Code: | 43961 |
Deposited On: | 20 Jun 2011 05:04 |
Last Modified: | 18 May 2016 00:46 |
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