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arXiv 1003.1970hep-th
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BPS黑洞、Hesse势和拓扑弦

BPS black holes, the Hesse potential, and the topological string

G. L. Cardoso, B. de Wit, S. Mahapatra

摘要:

通过迭代Legendre变换,构造了一类四维N=2超对称有效作用量的Hesse势.它是场的函数,场在对偶下根据经典对偶的算术子群进行变换,反映了弦紧化的单值性。这些变换不受修正的影响,不像在有效作用量中出现的场的变换受高阶导数耦合的影响。所考虑的行动类别包括FHSV和STU模型。我们也考虑杂种优势N=4超对称紧化。BPS黑洞的Hesse势等于自由能函数,它是对偶不变性的。一般来说,它可以用表示逆拓扑弦耦合常数$g_s$及其复共轭的模的幂来展开。全纯地依赖于$g_s$的项被期望对应于拓扑弦配分函数,并且在两种情况下明确地验证了这种期望。原则上存在与$g_s$和$\bar g_s$的混合幂成比例的项。

英文摘要:

The Hesse potential is constructed for a class of four-dimensional N=2 supersymmetric effective actions with S- and T-duality by performing the relevant Legendre transform by iteration. It is a function of fields that transform under duality according to an arithmetic subgroup of the classical dualities reflecting the monodromies of the underlying string compactification. These transformations are not subject to corrections, unlike the transformations of the fields that appear in the effective action which are affected by the presence of higher-derivative couplings. The class of actions that are considered includes those of the FHSV and the STU model. We also consider heterotic N=4 supersymmetric compactifications. The Hesse potential, which is equal to the free energy function for BPS black holes, is manifestly duality invariant. Generically it can be expanded in terms of powers of the modulus that represents the inverse topological string coupling constant, $g_s$, and its complex conjugate. The terms depending holomorphically on $g_s$ are expected to correspond to the topological string partition function and this expectation is explicitly verified in two cases. Terms proportional to mixed powers of $g_s$ and $\bar g_s$ are in principle present.

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