Quantum string cosmology in the phase space

Details Quantum string cosmology in the phase space Quantum string cosmology in the phase space

2011-09-22

arxiv.org/abs/1109.4903v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 4 figures, to appear in the Proceedings of the VIII Mexican Workshop on Gravitation and Mathematical Physics

Scientific paper

Deformation quantization is applied to quantize gravitational systems coupled with matter. This quantization procedure is performed explicitly for quantum cosmology of these systems in a flat minisuper(phase)space. The procedure is employed in a quantum string minisuperspace corresponding to an axion-dilaton system in an isotropic FRW Universe. The Wheeler-DeWitt-Moyal equation is obtained and its corresponding Wigner function is given analytically in terms of Meijer's functions. Finally, this Wigner functions is used to extract physical information of the system.

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