Nastase, Horatiu [UNESP]Sonnenschein, Jacob2013-09-302014-05-202013-09-302014-05-202012-02-01Journal of High Energy Physics. New York: Springer, n. 2, p. 22, 2012.1126-6708http://hdl.handle.net/11449/24224We describe type IIA cosmological brane inflation scenarios based on the holographic MQCD model of Aharony et al [1]. The scenarios can be related via T-duality to the type IIB KKLMMT model [2]. They describe a probe brane configuration of p D4 branes stretching between an NS5 and NS5' branes in the holographic background of large N D4 branes. The resulting cosmological models have a Wick-rotated D4-brane metric, with transverse dimensions compactified, and a spiralling brane with flux p. In one model, the background has a small nonextremality, and the inflaton is provided by the position of a "sliding" D4-brane, and in the other, the background is supersymmetric, but with a sliding anti-D4-brane. We obtain good and generic inflationary models, though several unknowns remain, in particular about subleading corrections. The usual caveat of volume stabilization generically spoiling slow-roll still applies.22engCosmology of Theories beyond the SMD-branesM-TheoryArtigo10.1007/JHEP02(2012)040WOS:000301451200040Acesso restrito