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arXiv 1107.5705hep-thgr-qc
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EVH黑洞、AdS3咽喉和EVH/CFT建议

EVH Black Holes, AdS3 Throats and EVH/CFT Proposal

M. M. Sheikh-Jabbari, Hossein Yavartanoo

摘要:

在一般的黑洞类中,存在极值黑洞(具有消失的Hawking温度T)和消失的视界面积Ah,但具有有限的Ah/T比,极值消失视界(EVH)黑洞。我们研究了一个四维EVH黑洞解的近视界极限到一个通用的(规范)爱因斯坦-麦克斯韦尔介子理论,并表明,在近视界极限,他们开发的喉这是一个捏orbifold限制的AdS 3。这是极端黑洞的近视界极限包含一个AdS 2喉的著名结果的延伸。我们表明,在近EVH的近视界极限的捏AdS 3因子变成捏BTZ黑洞,这个近视界极限确实是一个去耦极限。我们认为,如果在视界极限附近,4d牛顿常数G4为零,使得Bekenstein-Hawking熵S = Ah/(4G 4)保持有限,那么AdS 3或BTZ轨道的箍缩问题就可以解决.我们提出在这个极限下,近视界EVH黑洞是一个二维CFT的对偶。我们提供的证据支持的EVH/CFT对应和评论其连接到克尔/CFT的建议和猜测如何EVH/CFT可用于研究通用的,如Schwarzchild型黑洞。

英文摘要:

Within class of generic black holes there are extremal black holes (with vanishing Hawking temperature T) and vanishing horizon area Ah, but with finite Ah/T ratio,the Extremal Vanishing Horizon (EVH) black holes. We study the near horizon limit of a four dimensional EVH black hole solution to a generic (gauged) Einstein-Maxwell dilaton theory and show that in the near horizon limit they develop a throat which is a pinching orbifold limit of AdS3. This is an extension of the well known result for extremal black holes the near horizon limit of which contains an AdS2 throat. We show that in the near EVH near horizon limit the pinching AdS3 factor turns to a pinching BTZ black hole and that this near horizon limit is indeed a decoupling limit. We argue that the pinching AdS3 or BTZ orbifold is resolved if the near horizon limit is accompanied by taking the 4d Newton constant G4 to zero such that the Bekenstein-Hawking entropy S = Ah/(4G4) remains finite. We propose that in this limit the near horizon EVH black hole is dual to a 2d CFT. We provide pieces of evidence in support of the EVH/CFT correspondence and comment on its connection to the Kerr/CFT proposal and speculations how the EVH/CFT may be used to study generic e.g. Schwarzchild-type black holes.

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