منابع مشابه
D - 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...
متن کاملExtended D-term Hybrid Inflation
In this paper, we show that if we extend D-term hybrid inflation by adding a light scalar field which couples to a waterfall field, large non-Gaussianity can be generated at the end of inflation. Contribution of cosmic strings generated after D-term inflation to the Cosmic Microwave Background (CMB) angular power spectrum can be as low as 10% and this also evade the spectral index problem. cmli...
متن کاملD-term Uplifted Racetrack Inflation
It is shown that racetrack inflation can be implemented in a moduli stabilisation scenario with a supersymmetric uplifting D-term. The resulting model is completely described by an effective supergravity theory, in contrast to the original racetrack models. We study the inflationary dynamics and show that the gaugino condensates vary during inflation. The resulting spectral index is ns ≈ 0.95 a...
متن کاملP-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 کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2018
ISSN: 1029-8479
DOI: 10.1007/jhep04(2018)034