منابع مشابه
P-term, D-term and F-term inflation
P-term inflation is a version of hybrid inflation which naturally appears in some brane inflation models. It was introduced in the framework of N=2 supersymmetric gauge theory where superconformal SU(2, 2|2) symmetry is broken down to N=2 supersymmetry by the vev of the auxiliary triplet field ~ P . Depending on the direction of this vev, one can get either D-term inflation or F-term inflation ...
متن کاملF-term, D-term and hybrid brane inflation
We study inflation and reheating in models for the brane universe, considering hybrid brane inflation without tachyon condensation. We expect that some fields that are localized on different branes interact with O(1) coupling when branes are on top of each other, while the interaction vanishes when branes are separated at a distance. If the interaction is needed to avoid spontaneous breaking of...
متن کاملF-term Hybrid Inflation
We consider a class of well motivated supersymmetric models of F-term hybrid inflation (FHI) which can be linked to the supersymmetric grand unification. The predicted scalar spectral indexns cannot be smaller than 0.97 and can exceed unity including corrections from minimal supergravity, if the number of e-foldings corresponding to the pivot scale k∗ = 0.002/Mpc is around 50. These results are...
متن کاملD - Term Inflation
We show that inflation which is dominated by the D-term density avoids the 'slow-roll' problem of inflation in supergravity. Such an inflationary scenario can naturally emerge in theories with non-anomalous or anomalous U(1) gauge symmetry. In the latter case the scale of inflation is fixed by the Green–Schwarz mechanism of anomaly cancellation. The crucial point is that the (super)gravity-medi...
متن کاملDouble D-term inflation
Comparisons of cosmological models to current data show that the presence of a nontrivial feature in the primordial power spectrum of fluctuations, around the scale k ∼ 0.05hMpc−1, is an open and exciting possibility, testable in a near future. This could set new constraints on inflationary models. In particular, current data favour a ΛCDM model with a steplike spectrum, and more power on small...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2003
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2003/10/008