论文标题

正规化的4D爱因斯坦 - 加斯 - 鲍尼特理论中的非交通启发的黑洞

Noncommutative inspired black holes in regularised 4D Einstein-Gauss-Bonnet theory

论文作者

Ghosh, Sushant G., Maharaj, Sunil D.

论文摘要

弦理论的低能量限制表明,应修改标准重力作用,以包括尺寸持续的高斯 - 骨密度的形式包括高阶曲率项。如果仅包含二次曲率项,则结果理论是Einstein-Gauss-Bonnet(EGB)重力仅在$ D> 4 $尺寸中有效。最近,正规化,$ d \至4 $限制,EGB重力的兴趣激增,由此产生的正规$ 4D $ EGB重力具有非平凡的重力动力学。我们获得了一个静态的球形对称非交换性(NC)几何启发的黑洞溶液,高斯质量分布作为正规化$ 4D $ EGB的来源,还分析了它们的性质。 NC的指标启发了$ 4D $ EGB黑洞在原点周围的De Sitter核心和$ 4D $ EGB度量之间平稳地插值,为$ r/\sqrtθ\ to \ infty $。由于NC和GB项校正了黑洞,热力学量也已改变。从理论上讲,在临界半径$ r _+= r_c $和$ c _ {+} $的变化中,从无限为无限为无限的正到无限为较小的$ r _+r _+r _+r _+r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+$ r _+。热蒸发过程导致热力学稳定的极端黑洞,温度消失。

Low energy limits of string theory indicated that the standard gravity action should be modified to include higher-order curvature terms, in the form of dimensionally continued Gauss-Bonnet densities. If one includes only quadratic curvature terms then the resulting theory is Einstein-Gauss-Bonnet (EGB) gravity valid only in $D>4$ dimensions. Recently there has been a surge of interest in regularizing, a $ D \to 4 $ limit, of EGB gravity, and the resulting regularized $4D$ EGB gravities have nontrivial gravitational dynamics. We obtain a static spherically symmetric noncommutative (NC) geometry inspired black hole solution with Gaussian mass distribution as a source in the regularized $4D$ EGB and also analyze their properties. The metric of the NC inspired $4D$ EGB black hole smoothly interpolates between a de Sitter core around the origin and $4D$ EGB metric as $r/\sqrtθ \to \infty$. Owing to the NC and GB term corrected black hole, the thermodynamic quantities have also been altered. The phase transitions for the local thermodynamic stability, in the theory, is outlined by a discontinuity of specific heat $C_{+}$ at a critical radius $r_+=r_C$, and $C_{+}$ changes from infinitely negative to infinitely positive and then down to a finite positive for the smaller $r_+$. The thermal evaporation process leads to a thermodynamic stable extremal black hole with vanishing temperature.

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