Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Warm hilltop inflation
AU - Bueno-Sanchez, Juan Carlos
AU - Bastero Gil, Mar
AU - Berera, Arjun
AU - Dimopoulos, Konstantinos
PY - 2008/6/15
Y1 - 2008/6/15
N2 - We study the low-temperature limit of warm inflation in a hilltop model. This limit remains valid up to the end of inflation, allowing an analytic description of the entire inflationary stage. In the weak dissipative regime, if the kinetic density of the inflaton dominates after inflation, low-scale inflation is attained with Hubble scale as low as 1 GeV. In the strong dissipative regime, the model satisfies the observational requirements for the spectral index with a mild tuning of the model parameters, while also overcoming the eta-problem of inflation. However, there is some danger of gravitino overproduction unless the particle content of the theory is large.
AB - We study the low-temperature limit of warm inflation in a hilltop model. This limit remains valid up to the end of inflation, allowing an analytic description of the entire inflationary stage. In the weak dissipative regime, if the kinetic density of the inflaton dominates after inflation, low-scale inflation is attained with Hubble scale as low as 1 GeV. In the strong dissipative regime, the model satisfies the observational requirements for the spectral index with a mild tuning of the model parameters, while also overcoming the eta-problem of inflation. However, there is some danger of gravitino overproduction unless the particle content of the theory is large.
U2 - 10.1103/PhysRevD.77.123527
DO - 10.1103/PhysRevD.77.123527
M3 - Journal article
VL - 77
JO - Physical Review D
JF - Physical Review D
SN - 1550-7998
IS - 12
M1 - 123527
ER -