Rigidity of compact static near-horizon geometries with negative cosmological constant

Rigidity of compact static near-horizon geometries with negative cosmological constant
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具有负宇宙学常数的紧致静态近地平线几何的刚性

DOI:
10.1007/s11005-023-01654-2
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发表时间:
2023
影响因子:
1.2
通讯作者:
Wylie, William
Wylie, William
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wylie, William

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本文证明了具有负宇宙学常数的紧致静态近视界几何要么是爱因斯坦几何,要么是圆与爱因斯坦度规的乘积。Chruberciel、Reall和托德证明了宇宙常数为零时的刚性,在这种情况下,人们得到了更强的结果,即空间是里奇平坦的(Chruberciel et al. in Class Quantum Gravity 23:549-554,2006)。以前有人断言,一个更强的刚性陈述也适用于负的宇宙常数,但Bahuaud,Gunasekaran,Kunduri和Woolgar最近指出情况并非如此(Bahuaud et al. in Lett Math Phys 112(6):116,2022)。此外,他们还表明,对于具有负宇宙学常数的紧凑静态近视界几何,势矢量场X是恒定长度和无发散的。我们利用Bochner公式证明了X是平行场的结论,从而得到了最优刚度的结果。结果也更一般地保持形式-准爱因斯坦度量。
In this note, we show that compact static near-horizon geometries with negative cosmological constant are either Einstein or the product of a circle and an Einstein metric. Chruściel, Reall, and Todd proved rigidity when the cosmological constant vanishes, in which case one get the stronger result that the space is Ricci flat (Chruściel et al. in Class Quantum Gravity 23:549–554, 2006). It has been previously asserted that a stronger rigidity statement also holds for negative cosmological constant, but Bahuaud, Gunasekaran, Kunduri, and Woolgar recently pointed out that this was not the case (Bahuaud et al. in Lett Math Phys 112(6):116, 2022). They showed, moreover, that for a compact static near-horizon geometry with negative cosmological constant, the potential vector fieldXis constant length and divergence-free. We give an argument using the Bochner formula to improve their conclusion toXbeing a parallel field, which implies the optimal rigidity result. The result also holds more generally form-Quasi Einstein metrics with.
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