宇宙因果断开区域的能量-动量张量、宇宙常数和暴胀模型

IF 1 4区物理与天体物理 Q3 PHYSICS, MATHEMATICAL

Theoretical and Mathematical Physics Pub Date : 2024-10-24 DOI:10.1134/S004057792410012X

V. I. Kochkin

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引用次数: 0

摘要

我们继续研究现象学模型，在该模型中，宇宙常数形式的暗能量与因果断开区域的能动张量均值相一致。我们完全定义了随时间变化的模型参数，并阐明了它的物理意义。我们找到了与提出的方法相对应的标量场势。我们证明宇宙的超快膨胀存在两个阶段。宇宙加热阶段由于能量的正确定性要求而自然发生，并反映在得到的标量场势中。

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Energy–momentum tensor of a causally disconnected region of the Universe, the cosmological constant, and the inflationary model

We continue studying the phenomenological model in which dark energy in the form of the cosmological constant is identified with the mean of the energy–momentum tensor of the causally disconnected region. We completely define the time-dependent model parameter and clarify its physical meaning. We find the scalar field potential corresponding to the proposed approach. We show that two stages of superfast expansion of the Universe existed. The the Universe heating stage occurred naturally due to the positive definiteness requirement for the energy and is reflected in the obtained scalar field potential.

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来源期刊

Theoretical and Mathematical Physics 物理-物理：数学物理

CiteScore

1.60

自引率

20.00%

发文量

103

审稿时长

4-8 weeks

期刊介绍： Theoretical and Mathematical Physics covers quantum field theory and theory of elementary particles, fundamental problems of nuclear physics, many-body problems and statistical physics, nonrelativistic quantum mechanics, and basic problems of gravitation theory. Articles report on current developments in theoretical physics as well as related mathematical problems. Theoretical and Mathematical Physics is published in collaboration with the Steklov Mathematical Institute of the Russian Academy of Sciences.