由非最小耦合与导数耦合相结合实现的成功Higgs暴胀
广义相对论与量子宇宙学
2021-08-10 v3 宇宙学与河外天体物理
高能物理 - 理论
摘要
我们提出一种基于非最小耦合(NMC)与广义非最小导数耦合(GNMDC)在 Higgs 暴胀框架下共存的暴胀情景。该组合构造保留了各自情景的优点而避免了它们的缺点。特别地,由于 GNMDC 带来的引力摩擦效应,可以轻易实现漫长的暴胀阶段,且不会导致跨普朗克值及幺正性破坏。此外,由于 NMC 的贡献,张标比保持较低值。最后,困扰简单 GNMDC 情景的与标量扰动声速平方相关的不稳定性,如今由于 NMC 贡献在再加热时期的支配地位以及 GNMDC 效应的衰减而得以消除。这些特征使得具有引力非最小与导数耦合的情景成为描述暴胀的成功候选者。
引用
@article{arxiv.2102.08450,
title = {Successful Higgs inflation from combined nonminimal and derivative couplings},
author = {Stelios Karydas and Eleftherios Papantonopoulos and Emmanuel N. Saridakis},
journal= {arXiv preprint arXiv:2102.08450},
year = {2021}
}
备注
Version 3 published in PRD, 16 pages, 5 figures. Replacecd initial \alpha=7 combined model with \alpha=5, for demonstrative purposes. Added a combined model with a polynomial GNMDC and a corresponding discussion, as well as suggestive comments throughout. References added