Brane World States from a Generalized Chaplygin Gas

Details Brane World States from a Generalized Chaplygin Gas Brane World States from a Generalized Chaplygin Gas

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..736..188b&link_type=abstract

PHI IN THE SKY: The Quest for Cosmological Scalar Fields. AIP Conference Proceedings, Volume 736, pp. 188-194 (2004).

Mathematics

Logic

4

Quantum Cosmology, Particle-Theory And Field-Theory Models Of The Early Universe, Strings And Branes

Scientific paper

We consider the hypothesis that the transition to an accelerated period in the current universe involves a quantum mechanical process. We identify a minisuperspace configuration with two Lorentzian sectors, separated by a classically forbidden region. The Hartle-Hawking and Vilenkin wave functions are computed, together with the transition amplitudes towards the accelerating epoch. Furthermore, it is found that for specific initial conditions, the parameters characterizing the generalized Chaplygin gas become related through an expression involving an integer n. We also introduce a phenomenological association between some brane world scenarios and a FRW minisuperspace cosmology with a generalized Chaplygin gas. Results suggest that the brane tension would become related to generalized Chaplygin gas parameters through another expression involving an integer.

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