论文标题
关于2-Dim Dilaton重力的方面，尺寸还原和全息图
On aspects of 2-dim dilaton gravity, dimensional reduction and holography
论文作者
论文摘要
我们讨论了通用二维DILATON重力理论的各个方面。 2-DIM几何形状通常为$ ads_2 $，并且在零温度下具有IR曲率奇异性：可以通过黑洞调节。壳的作用是不同的：我们通过添加适当的对抗来讨论全息能量量张量。对于通过减少较高维理论的重力部门的尺寸减少而获得的理论，例如，较高的尺寸$ ads $ gravity作为具体的示例，二维描述与较高维度相吻合。我们还讨论了更多的一般理论，该理论包含一个额外的标量字段，该字段现在驱动了非平凡的动力学。最后，我们讨论了早期工作中讨论的二维宇宙学奇异性的各个方面。这些研究表明，通用的2-DIM DILATON重力理论与JT重力和“ JT附近”理论有些不同。
We discuss aspects of generic 2-dimensional dilaton gravity theories. The 2-dim geometry is in general conformal to $AdS_2$ and has IR curvature singularities at zero temperature: this can be regulated by a black hole. The on-shell action is divergent: we discuss the holographic energy-momentum tensor by adding appropriate counterterms. For theories obtained by dimensional reduction of the gravitational sector of higher dimensional theories, for instance higher dimensional $AdS$ gravity as a concrete example, the 2-dimensional description dovetails with the higher dimensional one. We also discuss more general theories containing an extra scalar field which now drives nontrivial dynamics. Finally we discuss aspects of the 2-dimensional cosmological singularities discussed in earlier work. These studies suggest that generic 2-dim dilaton gravity theories are somewhat distinct from JT gravity and theories "near JT".
