宇宙弦宇宙学中引力波的类伦敦张量模

IF 1.2 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Gravitation and Cosmology Pub Date : 2023-11-23 DOI:10.1134/S0202289323040035

Claudio Aravena-Plaza, Víctor Muñoz, Felipe A. Asenjo

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引用次数: 0

摘要

通过经典分析，我们证明了具有状态参数\(w=-1/3\)方程的宇宙介质中的引力波可以遵循类伦敦方程，这意味着某些引力波解在某些波长下呈现衰减。这种情形与宇宙弦宇宙论相对应，在引力波传播过程中产生了衰减时间尺度。我们讨论了这些解如何对可以传播的波的波长施加限制，这取决于空间曲率的类型和这种宇宙学类型的能量密度内容。

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London-Like Tensor Modes of Gravitational Waves in Cosmic String Cosmology

From a classical analysis, we show that gravitational waves in a cosmological medium with the equation of state parameter \(w=-1/3\) can follow a London-like equation, implying that some gravitational wave solutions present a decay for certain wavelengths. This scenario, corresponding to a cosmic string cosmology, induces an attenuation temporal scale on the gravitational wave propagation. We discuss on how these solutions impose a limit on the wavelength of the waves that can propagate, which depends on the type of spatial curvature and the energy density content of this type of cosmology.

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来源期刊

Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

>12 weeks

期刊介绍： Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoplesâ€™ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community