Semantic Scholar Open Access 2001 66 sitasi

BPS branes in cosmology

R. Kallosh L. Kofman Andrei Linde A. Tseytlin

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Abstrak

The possibility to study the M/string theory cosmology via 5d bulk & brane action is investigated. The role of the 4-form field in the theory of BPS branes in 5d is clarified. We describe arguments suggesting that the effective 4d description of the universe in the ekpyrotic scenario (hep-th/0103239) should lead to contraction rather than expansion of the universe. To verify these arguments, we study the full 5d action prior to its integration over the 5th dimension. We show that if one adds the potential V(Y) to the action of the bulk brane, then the metric ansatz used in the ekpyrotic scenario does not solve the dilaton and gravitational equations. To find a consistent cosmological solution one must use a more general metric ansatz and a complete 5d description of the brane interaction instead of simply adding an effective 4d bulk brane potential V(Y).

Topik & Kata Kunci

Physics

Penulis (4)

R. Kallosh

L. Kofman

Andrei Linde

A. Tseytlin

Format Sitasi

APA MLA BibTeX

Kallosh, R., Kofman, L., Linde, A., Tseytlin, A. (2001). BPS branes in cosmology. https://doi.org/10.1103/PhysRevD.64.123524

Akses Cepat

Lihat di Sumber doi.org/10.1103/PhysRevD.64.123524

Informasi Jurnal

Tahun Terbit: 2001
Bahasa: en
Total Sitasi: 66×
Sumber Database: Semantic Scholar
DOI: 10.1103/PhysRevD.64.123524
Akses: Open Access ✓