TY - JOUR
T1 - Towards multi-field D-brane inflation in a warped throat
AU - Chen, Heng Yu
AU - Gong, Jinn Ouk
AU - Koyama, Kazuya
AU - Tasinato, Gianmassimo
PY - 2010/11
Y1 - 2010/11
N2 - We study the inflationary dynamics in a model of slow-roll inflation in warped throat. Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions. We closely investigate both the single field potential relevant for the slow-roll phase, and the full multi-field one including the angular modes which becomes important at later stages. We study the main features of the instability process, discussing its possible consequences and identifying the vacua towards which the angular modes are driven.
AB - We study the inflationary dynamics in a model of slow-roll inflation in warped throat. Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions. We closely investigate both the single field potential relevant for the slow-roll phase, and the full multi-field one including the angular modes which becomes important at later stages. We study the main features of the instability process, discussing its possible consequences and identifying the vacua towards which the angular modes are driven.
KW - Inflation
KW - Physics of the early universe
KW - String theory and cosmology
UR - http://www.scopus.com/inward/record.url?scp=78649823479&partnerID=8YFLogxK
U2 - 10.1088/1475-7516/2010/11/034
DO - 10.1088/1475-7516/2010/11/034
M3 - Article
AN - SCOPUS:78649823479
SN - 1475-7516
VL - 2010
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 11
M1 - 034
ER -