Supergravity inflation on the brane

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Bento, MC (Author) Other; Bertolami, O (Author) Other; Sen, AA (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 67

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 87 Citations

Scopus - 29 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-J1A

DOI: 10.1103/physrevd.67.023504

Abstract (EN): We study N=1 supergravity inflation in the context of the braneworld scenario. Particular attention is paid to the problem of the onset of inflation at sub-Planckian field values and the ensuing inflationary observables. We find that the so-called eta problem encountered in supergravity inspired inflationary models can be solved in the context of the braneworld scenario, for some range of the parameters involved. Furthermore, we obtain an upper bound on the scale of the fifth dimension, M(5)less than or similar to10(-3)M(P), in case the inflationary potential is quadratic in the inflaton field phi. If the inflationary potential is cubic in phi, consistency with observational data requires that M(5)similar or equal to9.2x10(-4)M(P).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5