Results 51 to 60 of about 20,263 (249)
Inflaton decay through supergravity effects [PDF]
Physics Letters B, 2006 18 pages, 4 figures.
Endo, M. +3 more
openaire +3 more sources
UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity
Fortschritte der Physik, Volume 68, Issue 10, October 2020., 2020 Abstract We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no‐scale supergravities in low‐energy 4D EFTs.
C. P. Burgess +4 more
wiley +1 more source
Moduli inflation from modular flavor symmetries
Journal of High Energy Physics, 2023 We study slow-roll inflation model controlled by the modular flavor symmetry. In the model, the modulus field plays a role of inflaton and the introduction of the stabilizer field coupled to a modular form in the superpotential produces the inflaton ...
Yoshihiko Abe +4 more
doaj +1 more source
Nonminimally coupled pseudoscalar inflaton [PDF]
Physical Review D, 2018 We consider a scenario in which the inflaton $ $ is a pseudoscalar field non-minimally coupled to gravity through a term of the form ${\cal X} R ^2$. The pseudoscalar is also coupled to a $U(1)$ gauge field (or an ensemble of ${\cal N}$ gauge fields) through an axial coupling of the form $ F \tilde{F}$. After M. M. Anber and L. Sorbo, Phys. Rev.
Beltrán Almeida, Juan P. +1 more
openaire +2 more sources
Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 We construct a unified model of inflation and PeV dark matter with an appropriate choice of no‐scale Kähler potential, superpotential, and gauge kinetic function in terms of MSSM fields and hidden sector Polonyi field. The model is consistent with the CMB observations and can explain the PeV neutrino flux observed at IceCube HESE.
Girish Kumar Chakravarty +3 more
wiley +1 more source
Gravitational-wave mediated preheating
Physics Letters B, 2015 We propose a new preheating mechanism through the coupling of the gravitational field to both the inflaton and matter fields, without direct inflaton–matter couplings.
Stephon Alexander +3 more
doaj +1 more source
Emergence of Warm Inflation in Curved Space‐Time between Accelerating Branes
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 It appears that having our own brane to somehow interact with other branes could give rise to quite an interesting system and that interaction could lead to some observable effects. We consider the question of whether or not these signatures of interaction between the branes can be observed. To answer this question, we investigate the effect induced by
Aroonkumar Beesham, Saibal Ray
wiley +1 more source
WIMPs, FIMPs, and Inflaton phenomenology via reheating, CMB and ∆N eff
Journal of High Energy Physics, 2023 In this paper, we extensively analyzed the reheating dynamics after inflation and looked into its possible implication on dark matter (DM) and inflaton phenomenology.
MD Riajul Haque +2 more
doaj +1 more source
Holography of a composite inflaton [PDF]
Journal of High Energy Physics, 2010 We study the time evolution of a brane construction that is holographically dual to a strongly coupled gauge theory that dynamically breaks a global symmetry through the generation of an effective composite Higgs vev. The D3/D7 system with a background magnetic field or non-trivial gauge coupling (dilaton) profile displays the symmetry breaking.
Evans, Nick +2 more
openaire +3 more sources
Simple realization of inflaton potential on a Riemann surface
Physics Letters B, 2014 The observation of the B-mode in the cosmic microwave background radiation combined with the so-called Lyth bound suggests the trans-Planckian variation of the inflaton field during inflation.
Keisuke Harigaya, Masahiro Ibe
doaj +1 more source