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arXiv 2402.02534gr-qchep-th
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重合f(Q, B_Q)引力与非线性电动力学耦合下的黑洞与规则黑洞

Black holes and regular black holes in coincident $f(\mathbb{Q},\mathbb{B}_Q)$ gravity coupled to nonlinear electrodynamics

José Tarciso S. S. Junior, Francisco S. N. Lobo, Manuel E. Rodrigues

AI总结:

本文在f(Q, B_Q)引力与非线性电动力学耦合框架下,通过约束f_Q=-f_B构造保持洛伦兹对称性的静态球对称黑洞及Bardeen、Culetu型规则黑洞解,并给出对应NLED拉格朗日量的解析表达。

摘要:

在这项工作中,我们考虑广义相对论对称平行等效(STEGR)的一种扩展,即f(Q)引力,通过引入边界项B_Q,其中Q是非度量标量。更具体地说,我们探索了f(Q, B_Q)引力与非线性电动力学(NLED)耦合下的静态球对称黑洞解和规则黑洞解。特别地,为了获得黑洞解,并确保我们的解保持洛伦兹对称性,我们假设如下关系f_Q = -f_B,其中f_Q = ∂f/∂Q,f_B = ∂f/∂B_Q。我们建立了三个黑洞模型,并且对于每种情况,我们以非度量标量或边界项作为出发点,以获得度规函数A(r)。此外,我们能够通过特定NLED拉格朗日量L_NLED(F)的解析解来表达物质。进一步地,我们还通过施加特定度规函数,获得了Bardeen型和Culetu型规则黑洞的广义解。

英文摘要:

In this work, we consider an extension of the symmetric teleparallel equivalent of General Relativity (STEGR), namely, $f(\mathbb{Q})$ gravity, by including a boundary term $\mathbb{B}_Q$, where $\mathbb{Q}$ is the non-metricity scalar. More specifically, we explore static and spherically symmetric black hole and regular black hole solutions in $f(\mathbb{Q},\mathbb{B}_Q)$ gravity coupled to nonlinear electrodynamics (NLED). In particular, to obtain black hole solutions, and in order to ensure that our solutions preserve Lorentz symmetry, we assume the following relation $f_Q = -f_B$, where $f_{Q}=\partial f/\partial\mathbb{Q}$ and $f_{B}= \partial f/\partial\mathbb{B}_Q$. We develop three models of black holes, and as the starting point for each case we consider the non-metricity scalar or the boundary term in such a way to obtain the metric functions $A(r)$. Additionally, we are able to express matter through analytical solutions for specific NLED Lagrangians ${\cal L}_{\rm NLED}(F)$. Furthermore, we also obtain generalized solutions of the Bardeen and Culetu types of regular black holes, by imposing specific metric functions.

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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