False Vacuum Inflation Beyond the Planck Scale in Supergravity
نویسنده
چکیده
We present a false vacuum inflationary scenario in which the inflaton field takes values considerably larger than the Planck scale. It is based on a class of inflationary potentials which can be derived from singular Kähler potentials in supergravity. Our scenario allows for a detectable gravitational wave contribution to the microwave background anisotropy.
منابع مشابه
False vacuum inflation with Einstein gravity.
We present a detailed investigation of chaotic inflation models which feature two scalar fields, such that one field (the inflaton) rolls while the other is trapped in a false vacuum state. The false vacuum becomes unstable when the magnitude of the inflaton field falls below some critical value, and a first or second order transition to the true vacuum ensues. Particular attention is paid to t...
متن کاملNew inflation in supergravity with a chaotic initial condition
We propose a self-consistent scenario of new inflation in supergravity. Chaotic inflation first takes place around the Planck scale, which solves the longevity problem, namely, why the universe can live much beyond the Planck time, and also gives an adequate initial condition for new inflation. Then, new inflation lasts long enough to generate primordial fluctuations for the large scale structu...
متن کاملNatural chaotic inflation in supergravity
We propose a chaotic inflation model in supergravity. In the model the Kahler potential has a Nambu-Goldstone-type shift symmetry of the inflaton chiral multiplet which ensures the flatness of the inflaton potential beyond the Planck scale. We show that chaotic inflation naturally takes place by introducing a small breaking term of the shift symmetry in the superpotential. This may open a new b...
متن کاملA supersymmetric topological inflation model
We propose a topological inflation model in supergravity. In this model, the vacuum expectation value (VEV) of the scalar field takes a value much larger than the gravitational scale MG ≃ 2.4 × 10 GeV, which is large enough to cause topological inflation. On the other hand, the expansions of the Kähler potential and the superpotential beyond the gravitational scale are validated by the introduc...
متن کاملSupersymmetric topological inflation model
We propose a topological inflation model in supergravity. In this model, the vacuum expectation value (VEV) of a scalar field takes a value much larger than the gravitational scale MG ≃ 2.4 × 10 GeV, which is large enough to cause topological inflation. On the other hand, expansions of the Kähler potential and the superpotential beyond the gravitational scale are validated by the introduction o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998