Inflation with large supergravity corrections

TY - JOUR

T1 - Inflation with large supergravity corrections

AU - Mazumdar, Anupam

AU - Nadathur, S.

AU - Stephens, P.

PY - 2012/2/3

Y1 - 2012/2/3

N2 - It is well known that large Hubble-induced supergravity corrections to the inflaton field can ruin the flatness of the potential, thus creating a tension between slow-roll inflation and supergravity. In this paper we show that it is possible to obtain a cosmologically flat direction, embedded within the minimal supersymmetric standard model, despite very large super-Hubble corrections. As an illustration, we show that a flat direction which is lifted by an n=6 operator matches the current cosmic microwave background data for a wide range of the Hubble parameter, 105GeVH inf 108.5GeV. Our approach can be applied to any F-term inflationary model.

AB - It is well known that large Hubble-induced supergravity corrections to the inflaton field can ruin the flatness of the potential, thus creating a tension between slow-roll inflation and supergravity. In this paper we show that it is possible to obtain a cosmologically flat direction, embedded within the minimal supersymmetric standard model, despite very large super-Hubble corrections. As an illustration, we show that a flat direction which is lifted by an n=6 operator matches the current cosmic microwave background data for a wide range of the Hubble parameter, 105GeVH inf 108.5GeV. Our approach can be applied to any F-term inflationary model.

U2 - 10.1103/PhysRevD.85.045001

DO - 10.1103/PhysRevD.85.045001

M3 - Journal article

SN - 2470-0010

VL - 85

SP - 045001

JO - Physical Review D

JF - Physical Review D

IS - 4

ER -