论文标题
Schwinger-Keldysh时间轮廓上的弦扰动理论
String Perturbation Theory on the Schwinger-Keldysh Time Contour
论文作者
论文摘要
我们在具有基质自由度的非平衡量子系统的Schwinger-keldysh公式中执行了很大的扩展，并研究了预期的双弦理论的通用特征。我们发现了拓扑属扩展的丰富改进：在原始配方中，未来的时间瞬间，Schwinger-Keldysh Time Contour Meet的前进分支与其自己的世界表格属扩展相关。在旋转Keldysh之后，世界表将分解为经典和量子部分。
We perform the large-$N$ expansion in the Schwinger-Keldysh formulation of non-equilibrium quantum systems with matrix degrees of freedom, and study universal features of the anticipated dual string theory. We find a rich refinement of the topological genus expansion: In the original formulation, the future time instant where the forward and backward branches of the Schwinger-Keldysh time contour meet is associated with its own worldsheet genus expansion. After the Keldysh rotation, the worldsheets decompose into a classical and quantum part.
