幂律高原膨胀非经典域研究

IF 10.2 4区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of High Energy Astrophysics Pub Date : 2024-10-09 DOI:10.1016/j.jheap.2024.10.002

Yogesh , Mayukh R. Gangopadhyay

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引用次数: 0

摘要

最近的宇宙微波背景（CMB）观测结果表明，在推动宇宙初始加速的平势膨胀场中存在一个高原特征。在这方面，迪莫普洛斯和欧文提出了一个非常有前途的模型，被称为幂律高原暴胀（PLP）（迪莫普洛斯和欧文，2016年），其中就有这一特征。但要使这一模型与标准冷膨胀情景下的观测结果相一致，我们需要引入一个热膨胀的纪元。在本文中，我们展示了在非经典领域实现这一模型，实际上可以使模型与观测结果保持一致，而无需引入任何晚期热膨胀。我们还报告了宇宙微波背景观测对再热参数的约束，我们可以把再热参数与模型参数联系起来。

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Study in the non-canonical domain of power law Plateau inflation

The recent Cosmic Microwave Background (CMB) observations are pointing towards a plateau feature in the flat potential of the inflation field to drive the initial acceleration of the Universe. In this regard, Dimopoulos and Owen introduced a very promising model dubbed as Power Law Plateau inflation (PLP) (Dimopoulos and Owen, 2016) which has this feature in it. But to make this model consistent with observation in the standard cold inflationary scenario, one needs to introduce an epoch of thermal inflation. In this paper, we have shown realizing this model in the non-canonical domain, could actually make the model consistent with the observation without introducing any late-stage thermal inflation. We also report the constraints from the Cosmic Microwave Background observations on the reheating parameter that one can associate with the model parameter.

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来源期刊

Journal of High Energy Astrophysics Earth and Planetary Sciences-Space and Planetary Science

CiteScore

9.70

自引率

5.30%

发文量

审稿时长

65 days

期刊介绍： The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.