Inflation in a scalar-vector gravity theory

被引：0

作者：

Gonzalez-Espinoza, Manuel ^{[1
]}

Herrera, Ramon ^{[2
]}

机构：

[1] Univ Playa Ancha, Fac Ciencias Nat & Exactas, Lab Invest Computo Fis, Subida Leopoldo Carvallo 270, Valparaiso, Chile

[2] Pontificia Univ Catolica Valparaiso, Inst Fis, Casilla 4950, Valparaiso, Chile

来源：

ANNALS OF PHYSICS | 2025年 / 473卷

关键词：

Inflation; Scalar field; Vector Field; PARTICLE CREATION; PERTURBATIONS; UNIVERSE; FLUCTUATIONS; FLATNESS; HORIZON; MODELS;

D O I：

10.1016/j.aop.2024.169876

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the possibility that inflation is driven by a scalar field together with a vector field minimally coupled to gravity. By assuming an effective potential that incorporates both fields into the action, we explore two distinct scenarios: one where the fields interact and another where they do not. In this context, we find different analytical solutions to the background scalar-vector fields dynamics during the inflationary scenario considering the slow-roll approximation. Besides, general conditions required for these models of two fields to be realizable are determined and discussed. From the cosmological perturbations, we consider a local field rotation, and then we determine these perturbations (scalar and tensor) during inflation, and we also utilize recent cosmological observations for constraining the parameter-space in these scalar-vector inflationary models.

引用

页数：13

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