F-Theory, spinning black holes and multi-string branches

F-Theory, spinning black holes and multi-string branches
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F 理论、旋转黑洞和多弦分支

DOI:
10.1007/jhep01(2016)009
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发表时间:
2016
影响因子:
5.4
通讯作者:
Haghighat B
Haghighat B
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Haghighat B

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我们研究了从6d广义超引力弦演化而来的5d超对称黑洞。这些弦在6d中有一个F-理论实现,作为在椭圆3-折叠的基础上包裹光滑亏格g曲线的D3膜。他们享受(0,4)世界片超对称性与额外的SU(2)L电流代数在水平g上实现的左移动。当光滑曲线退化时,它们导致多弦分支,我们发现微观世界片理论在IR中流动到具有不同中心电荷的断开的2D CFTs。单弦扇区是具有最大中心电荷的扇区,当它缠绕在一个圆上时,会导致一个5d旋转的BPS黑洞,其视界体积与Cardy公式的熵预测一致。然而,我们发现新的现象,这个分支满足其他分支的CFT。这些包括在6维空间中没有束缚态,但在绕圆时通过KK动量束缚的多弦配置,以及曲线退化为球体的轨迹。这些轨迹导致黑洞的配置,可以有总角动量相对于陶布-努特中心满足J2> M3,其状态的数量,虽然指数大,增长慢得多的大旋转黑洞。
We study 5d supersymmetric black holes which descend from strings of genericsupergravity in 6d. These strings have an F-theory realization in 6d as D3 branes wrapping smooth genus g curves in the base of elliptic 3-folds. They enjoy (0, 4) worldsheet supersymmetry with an extra SU (2) L current algebra at level g realized on the left-movers. When the smooth curves degenerate they lead to multi-string branches and we find that the microscopic worldsheet theory flows in the IR to disconnected 2d CFTs having different central charges. The single string sector is the one with maximal central charge, which when wrapped on a circle, leads to a 5d spinning BPS black hole whose horizon volume agrees with the leading entropy prediction from the Cardy formula. However, we find new phenomena where this branch meets other branches of the CFT. These include multi-string configurations which have no bound states in 6 dimensions but are bound through KK momenta when wrapping a circle, as well as loci where the curves degenerate to spheres. These loci lead to black hole configurations which can have total angular momentum relative to a Taub-Nut center satisfying J 2> M 3 and whose number of states, though exponentially large, grows much slower than those of the large spinning black hole.
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