Nonminimal Coleman-Weinberg inflation with an R2 term
نویسندگان
چکیده
منابع مشابه
Inflation in the nonminimal theory with ‘K(φ)R’ term
It is widely accepted that the idea of inflation [2] is the best solution to many cosmological problems such as flatness, homogeneity and isotropy of the observed universe [3]. In models of particle physics models of inflation, it took place essentially due to a scalar field, the inflaton field, whose potential is so flat that the inflaton can roll down only very slowly [4]. Under such a ‘slowr...
متن کاملInflation and quintessence with nonminimal coupling
The nonminimal coupling (NMC) of the scalar field to the Ricci curvature is unavoidable in many cosmological scenarios. Inflation and quintessence models based on nonminimally coupled scalar fields are studied, with particular attention to the balance between the scalar potential and the NMC term ξRφ2/2 in the action. NMC makes acceleration of the universe harder to achieve for the usual potent...
متن کاملFinal Project The Coleman – Weinberg Potential
The Lagrangian density in the problem is L = − 1 4 (F µν) 2 + (D µ φ) † D µ φ − m 2 φ † φ − λ 6 (φ † φ) 2 , (1) where φ(x) is a complex scalar field in four spacetime dimensions (except for part (h)), and we are interested in the theory when m 2 = −µ 2 < 0. The covariant derivative includes the vector potential D µ φ = (∂ µ + ieA µ)φ. (2) I don't know why they chose this funny normalization for...
متن کاملThe Next-to-Minimal Coleman-Weinberg Model
In the standard model (SM) the condition that the Higgs mass parameter vanishes is stable under radiative corrections and yields a theory that can be renormalized using dimensional regularization. Thus, this model allows to predict the Higgs boson mass. However, it is phenomenologically ruled out in its minimal version. Here, we present a phenomenologically viable, minimal extension which only ...
متن کاملChaotic inflation with running nonminimal coupling
We have found a successful model of chaotic inflation with an inflaton coupled nonminimally with gravity. The nonminimal coupling constant ξ runs with the evolution of the inflaton. The running nature of the coupling leads naturally to the situations where the coupling becomes small enough to have sufficient period of the inflation to resolve the cosmological puzzles.
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 Cosmology and Astroparticle Physics
سال: 2019
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2019/02/006