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arXiv 2405.09620astro-ph.COhep-ph
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利用引力子轫致辐射产生的引力波探测再加热

Probing Reheating with Gravitational Waves from Graviton Bremsstrahlung

Basabendu Barman, Nicolás Bernal, Simon Cléry, Yann Mambrini, Yong Xu, Óscar Zapata

备注：
6 pages, 4 figures. Contribution to the 2024 Electroweak session of the 58th Rencontres de Moriond. Based on Refs. arXiv:2301.11345, arXiv:2305.16388 and arXiv:2311.12694
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AI总结：

本研究基于三篇相关工作，分析暴胀再加热期间引力子轫致辐射产生的原初引力波特征，指出其谱型由暴胀子势和耦合类型决定，该随机引力波背景可被下一代高频引力波探测器探测，为研究再加热动力学提供新途径。

摘要：

本报告基于arXiv:2301.11345、arXiv:2305.16388、arXiv:2311.12694三篇工作，讨论暴胀再加热期间由引力子轫致辐射产生的原初引力波（GW）。对于再加热过程，我们考虑暴胀子衰变和湮灭为玻色子或费米子对的情况，假设暴胀子$\u03d5$在一般的单项式势$V(\u03d5) \u221d \u03d5^n$附近振荡。引力波谱呈现出由暴胀子势以及暴胀子与物质场耦合类型决定的不同再加热动力学对应的鲜明特征。我们表明，产生的随机引力波背景可在下一代引力波探测器中被探测到，尤其是在高频段。我们进一步强调了轫致辐射诱导的引力波在探测再加热基本动力学方面的潜力。

英文摘要：

In this talk, based on arXiv:2301.11345, arXiv:2305.16388, arXiv:2311.12694, we discuss the production of primordial gravitational waves (GW) sourced by graviton bremsstrahlung during inflationary reheating. For reheating, we consider inflaton decays and annihilations into pairs of bosons or fermions, assuming an inflaton $ϕ$ that oscillates around a generic monomial potential $V(ϕ) \propto ϕ^n$. The GW spectrum exhibits distinct features depending on the underlying reheating dynamics, which is controlled by the inflaton potential and the type of coupling between the inflaton and the matter fields. We show that the produced stochastic GW background could be probed in next-generation GW detectors, especially at high frequencies. We further highlight the potential of bremsstrahlung-induced GW to probe the underlying dynamics of reheating.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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