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arXiv 2401.16360gr-qc
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$\boldsymbol{\text{ℓ-}}$$\textbf{Proca}$星

$\ell$-Proca stars

Claudio Lazarte, Miguel Alcubierre

AI总结:

本研究将带角动量的玻色星多场推广从标量拓展至矢量情形,提出ℓ-Proca星这一爱因斯坦-多Proca系统的新球对称定态解,验证了方案自洽性并数值得到小ℓ值下的基态。

摘要:

为了得到推广单场球对称Proca星的新构型,我们将最初应用于标量情形的、带角动量的玻色星多场推广方法的适用范围拓展至矢量情形。这些我们称之为ℓ-Proca星的新天体,是爱因斯坦-(多)Proca系统的定态球对称玻色星解,其物质组分由任意奇数个$2\boldsymbol{\text{ℓ}}+1$个复Proca场构成,所有场具有相同的质量、时间频率、径向分布和角动量数$\boldsymbol{\text{ℓ}}$。我们分析了物质组分的约束方程与径向演化方程系统,以证明该方案的自洽性,并使用谱方法数值求解了ℓ取前几个值时这些新解的基态。

英文摘要:

Initially applied to the scalar case, we extend the applicability of the multi-field generalization with angular momentum of bosonic stars to the vector case, in order to obtain new configurations that generalize the one-field spherical Proca stars. These new objects, which we call $\ell$-Proca stars, arise as stationary and spherically symmetric bosonic stars solutions of the Einstein-(multi)Proca system, whose matter content is formed by an arbitrary odd number of $2\ell+1$ of complex Proca fields with the same mass, time-frequency, radial profile and angular momentum number $\ell$. We analyze the system of constraint and evolution radial equations for the matter content to show the consistency of our proposal, and obtain numerically the ground states of these new solutions for the first few values of $\ell$ using spectral methods.

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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