S-brane thermodynamics
S-brane thermodynamics
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DOI：
10.1088/1126-6708/2003/10/048
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发表时间：
2003-02
影响因子：
5.4
通讯作者：
A. Maloney;A. Strominger;Xi Yin
中科院分区：
文献类型：
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作者：
A. Maloney;A. Strominger;Xi Yin
gs = 0时弦理论s膜作为具有a的精确世界片CFTS的描述？Cosh X 0还是？是吗？考虑了X 0边界相互作用。由于下X 0？X0+2？i，这些配置有有趣的相似之处，黑洞或德西特几何。例如，由Unruh探测器看到的开弦对产生在温度T = 1/4？时是热的。它表明，尽管快速的时间依赖性的s膜，存在一个完全热的开弦混合状态。相应的边界状态的玻色子和超弦的情况下构造。这种状态定义了一种长距离欧几里德有效场论，其光模被限制在s膜上。在耦合的临界值？= 1/2，边界相互作用简单地产生SU（2）旋转？从Neumman到Dirichlet边界条件。什么？= 1/2 s-膜简化为虚时间轴上的sD-膜阵列（具有横向时间维度的D-膜）。在一个（玻色子）sD-膜和一个普通D-膜之间的长程力在环形图中显示为两个D-膜之间的力的11/12倍。线性化的含时RR场Fp+2 = dCp+1所产生的sDp膜超弦理论的明确计算，发现携带半个单位的s电荷Qs =？八个？p*Fp+2 = 1/2，其中？八个？p是任何横向类空切片。
The description of string-theoretic s-branes at gs = 0 as exact worldsheet CFTs with a ?cosh X0 or ?e?X0 boundary interaction is considered. Due to the imaginary-time periodicity of the interaction under X0?X0+2?i, these configurations have intriguing similarities to black hole or de Sitter geometries. For example, the open string pair production as seen by an Unruh detector is thermal at temperature T = 1/4?. It is shown that, despite the rapid time dependence of the s-brane, there exists an exactly thermal mixed state of open strings. The corresponding boundary state is constructed for both the bosonic and superstring cases. This state defines a long-distance euclidean effective field theory whose light modes are confined to the s-brane. At the critical value of the coupling ? = 1/2, the boundary interaction simply generates an SU(2) rotation by ? from Neumman to Dirichlet boundary conditions. The ? = 1/2 s-brane reduces to an array of sD-branes (D-branes with a transverse time dimension) on the imaginary time axis. The long range force between a (bosonic) sD-brane and an ordinary D-brane is shown from the annulus diagram to be 11/12 times the force between two D-branes. The linearized time-dependent RR field Fp+2 = dCp+1 produced by an sDp-brane in superstring theory is explicitly computed and found to carry a half unit of s-charge Qs = ??8?p*Fp+2 = 1/2, where ?8?p is any transverse spacelike slice.