Implication of preheating on gravity assisted baryogenesis in R2 -Higgs inflation

IF 5 2区物理与天体物理 Q1 Physics and Astronomy Physical Review D Pub Date : 2025-01-24 DOI:10.1103/physrevd.111.023042

Yann Cado, Christoph Englert, Tanmoy Modak, Mariano Quirós

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引用次数: 0

Abstract

We investigate the impact of preheating on baryogenesis in R2-Higgs inflation. In this scenario, the inclusion of a dimension-six operator (R/Λ2)BμνB˜μν abundantly generates helical hypermagnetic fields during inflation, leading to a baryon asymmetric Universe at the electroweak crossover. Focusing on the R2-like regime, we first derive the relevant dynamics of preheating using a doubly covariant formalism. We find that preheating can happen for the Higgs, transverse gauge, and Goldstone bosons, however, it is dependent on the value of the nonminimal coupling ξH between the Standard Model Higgs field and the Ricci scalar. We identify the preheating temperature to determine the appropriate scale Λ for driving baryogenesis, which is around Λ∼2.2(2.6)×10−5MP for ξH∼1(10). Our results represent the most accurate estimation of the scale of gravity induced baryogenesis in R2-Higgs inflation to date. Areas for further improvement are identified.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.