arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.15464hep-phastro-ph.HEgr-qc
收藏

超新星中微子与随机引力波的相互作用

Interaction of supernova neutrinos with stochastic gravitational waves

Maxim Dvornikov

摘要:

研究了中微子在任意极化的引力波(GW)作用下的传播和味振荡。本文用微扰方法重新导出了三味中微子系统的有效哈密顿量。然后,利用这个结果,我们考虑了一般能量密度谱的随机引力波中中微子味的演化。得到了密度矩阵的方程,并在三种中微子味的情况下解析求解。作为一个应用,我们研究了在一个核心坍缩超新星发射的中微子束的味道含量的演变。我们得到了引力波对中微子通量贡献的解析表达式和描述中微子通量衰减到渐近值的阻尼衰减量的解析表达式。我们发现合并超大质量黑洞发射的引力波对中微子通量演化的贡献超过了恒星质量的黑洞。讨论了所得结果对中微子望远镜测量天体物理中微子的意义。

英文摘要:

We examine the propagation and flavor oscillations of neutrinos under the influence of gravitational waves (GWs) with an arbitrary polarization. We rederive the effective Hamiltonian for the system of three neutrino flavors using the perturbative approach. Then, using this result, we consider the evolution of neutrino flavors in stochastic GWs with a general energy density spectrum. The equation for the density matrix is obtained and solved analytically in the case of three neutrino flavors. As an application, we study the evolution of the flavor content of a neutrino beam emitted in a core-collapsing supernova. We obtain the analytical expressions for the contributions of GWs to the neutrino fluxes and for the damping decrement, which describes the attenuation of the fluxes to their asymptotic values. We find that the contribution to the evolution of neutrino fluxes from GWs, emitted by merging supermassive black holes, dominates over that from black holes with stellar masses. The implication of the obtained results for the measurement of astrophysical neutrinos with neutrino telescopes is discussed.

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。

↑