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We present a minimal UV complete framework to embed inflation and dark matter by extending the standard model with a singlet real scalar field (the inflaton) and a singlet fermonic field acting as dark matter. The inflaton features the most…

High Energy Physics - Phenomenology · Physics 2022-07-27 Nicolás Bernal , Yong Xu

The quartic and trilinear Higgs field couplings to an additional real scalar are renormalizable, gauge and Lorentz invariant. Thus, on general grounds, one expects such couplings between the Higgs and an inflaton in quantum field theory. In…

High Energy Physics - Phenomenology · Physics 2018-12-26 Yohei Ema , Mindaugas Karciauskas , Oleg Lebedev , Stanislav Rusak , Marco Zatta

Inflation based on scalar fields which are non-minimally coupled to gravity has been proposed as a way to unify inflation with weak-scale physics, with the inflaton being identified with the Higgs boson or other weak-scale scalar article.…

High Energy Physics - Phenomenology · Physics 2010-04-30 Rose N. Lerner , John McDonald

This paper is based on a talk in which I discussed how a component of the dynamical affine connection, that is independent of the metric, can drive inflation in agreement with observations. This provides a geometrical origin for the…

High Energy Physics - Phenomenology · Physics 2023-11-07 Alberto Salvio

If the Standard Model (SM) Higgs is weakly coupled to the inflationary sector, the Higgs is expected to be universally in the form of a condensate towards the end of inflation. The Higgs decays rapidly after inflation - via non-perturbative…

High Energy Physics - Phenomenology · Physics 2017-06-30 Daniel G. Figueroa , Christian T. Byrnes

Cosmic Microwave Background (CMB) observations are used to constrain reheating to Standard Model (SM) particles after a period of inflation. As a light spectator field, the SM Higgs boson acquires large field values from its quantum…

High Energy Physics - Phenomenology · Physics 2022-11-17 Aliki Litsa , Katherine Freese , Evangelos I. Sfakianakis , Patrick Stengel , Luca Visinelli

We present an effective model where the inflaton is a relaxion that scans the Higgs mass and sets it at the weak scale. The dynamics consist of a long epoch in which inflation is due to the shallow slope of the potential, followed by a few…

High Energy Physics - Phenomenology · Physics 2017-06-05 Walter Tangarife , Kohsaku Tobioka , Lorenzo Ubaldi , Tomer Volansky

The recent measurement of the Higgs boson mass implies a relatively slow rise of the Standard Model Higgs potential at large scales, and a possible second minimum at even larger scales. Consequently, the Higgs field may develop a large…

High Energy Physics - Phenomenology · Physics 2015-03-05 Alexander Kusenko , Lauren Pearce , Louis Yang

Reheating is essential for transforming the cold, vacuum dominated Universe at the end of inflation into the hot thermal bath required by the Standard Model. In many well motivated inflationary models, however, the inflaton has no direct…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-13 Aarav Shah , Kanabar Jay , Maxim Khlopov , Oem Trivedi , Maxim Krasnov

It is shown that a positive non-minimal coupling of the Higgs field to gravity can solve the two problems in inflation models in which postinflationary universe is dominated by an energy with stiff equation of state such as a kination,…

General Relativity and Quantum Cosmology · Physics 2019-04-09 Tomohiro Nakama , Jun'ichi Yokoyama

We consider the construction of inverted hybrid inflation models in which the vacuum energy during inflation is at the TeV scale, and the inflaton couples to the Higgs field. Such models are of interest in the context of some recently…

High Energy Physics - Phenomenology · Physics 2009-11-07 Edmund J. Copeland , David Lyth , Arttu Rajantie , Mark Trodden

Adopting a recently proposed single-superfield framework of supergravity inflation, we consider large field inflationary models in which MSSM Higgs-like fields play the role of the inflaton. In the simplest cases, the inflaton potential has…

High Energy Physics - Phenomenology · Physics 2015-04-24 Takahiro Terada

We discuss the emergence of an inflationary phase in supergravity with the super-Higgs effect due to dynamical spontaneous breaking of supersymmetry, in which the role of the inflaton is played by the gravitino condensate. Realistic models…

High Energy Physics - Theory · Physics 2013-10-30 John Ellis , Nick E. Mavromatos

We study the hybrid inflation with a pseudo-Nambu-Goldstone boson inflaton and two waterfall scalar fields. The $Z_2$ symmetry for the waterfall fields keeps inflaton potential flat against quantum corrections coming from the waterfall…

High Energy Physics - Phenomenology · Physics 2023-06-28 Hyun Min Lee , Adriana Menkara

Spontaneous breaking of conformal symmetry has been widely exploited in successful model building of both inflationary cosmology and particle physics phenomenology. Conformal Grand Unified Theory (CGUT) inflation provides the same scalar…

High Energy Physics - Phenomenology · Physics 2020-07-28 Simone Biondini , K. Sravan Kumar

The discovery of Higgs mechanism within the context of spontaneous symmetry breaking has offered a new perspective on the early time cosmic inflation and also on the relationship between elementary particles and dark energy, believed to…

High Energy Physics - Theory · Physics 2024-06-14 Manda Malekpour , Kourosh Nozari

We suggest a path integral formulation for the tunneling cosmological state, which admits a consistent renormalization and renormalization group (RG) improvement in particle physics applications of quantum cosmology. We apply this…

High Energy Physics - Theory · Physics 2010-04-06 Andrei O. Barvinsky , Alexander Yu. Kamenshchik , Claus Kiefer , Christian F. Steinwachs

We analyse the reheating in the modification of \nuMSM (Standard Model with three right handed neutrinos with masses below the electroweak scale) where the sterile neutrino providing the Dark Matter is generated in decays of the additional…

High Energy Physics - Phenomenology · Physics 2009-01-14 Alexey Anisimov , Yannick Bartocci , Fedor L. Bezrukov

We consider the extension of the Standard Model (SM) with a light inflaton where both unitarity problem in Higgs inflation and vacuum instability problem are resolved. The linear non-minimal coupling of the inflaton to gravity leads to a…

High Energy Physics - Phenomenology · Physics 2018-07-25 Hyun Min Lee

The Higgs not only induces the masses of all SM particles, the Higgs, given its special mass value, is the natural candidate for the inflaton and in fact is ruling the evolution of the early universe, by providing the necessary dark energy…

High Energy Physics - Phenomenology · Physics 2015-06-18 Fred Jegerlehner