Brane World States from a Generalized Chaplygin Gas

Journal Article · Wed Nov 17 04:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1835191· OSTI ID:20630324

Bouhmadi-Lopez, Mariam ^[1]; Vargas Moniz, Paulo ^[2]

---

1. ICG, University of Portsmouth, Mercantile House, Hampshire Terrace, Portsmouth PO1 2EG (United Kingdom)
2. Phys. Dept., UBI, 6200 Covilha, (Portugal)

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.

• OSTI ID: 20630324
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 736; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
MEMBRANES
QUANTUM FIELD THEORY
QUANTUM MECHANICS
TRANSITION AMPLITUDES
UNIVERSE
WAVE FUNCTIONS