Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory

Glauber-Sudarshan 态、宇宙波泛函与 Wheeler-De Witt 方程

Glauber-Sudarshan States, Wave Functional of the Universe and the Wheeler-De Witt equation

本文提出离壳与在壳 Glauber-Sudarshan 态均由满足 Wheeler-De Witt 方程的宇宙波泛函控制，并据此论证弦理论中瞬态四维 de Sitter 相是超对称翘曲 Minkowski 背景上的激发态而非真空态。

de Sitter Space as a Glauber-Sudarshan State

Glauber-Sudarshan states, sometimes simply referred to as Glauber states, or alternatively as coherent and squeezed-coherent states, are interesting states in the configuration spaces of any quantum field theories, that closely resemble classical trajectories in space-time. In this paper, we identify four-dimensional de Sitter space as a coherent state over a supersymmetric Minkowski vacuum. Although such an identification is not new, what is new however is the claim that this is realizable in full string theory, but only in conjunction with temporally varying degrees of freedom and quantum co…

de Sitter Space as a Glauber-Sudarshan State: II

We provide further evidence to support the fact that a four-dimensional effective field theory description with de Sitter isometries in IIB string theory, overcoming the no-go and the swampland criteria, can only exist if de Sitter space is realized as a Glauber-Sudarshan state. We show here that this result is independent of the choice of de Sitter slicings. The Glauber-Sudarshan state, constructed by shifting the interacting vacuum in the M-theory uplift of the scenario, differs from a standard coherent state in QFT in the sense that the shape and size of the state changes with respect to ti…

de Sitter Glauber-Sudarshan态的复兴：节点图与Borel重和

Resurgence of a de Sitter Glauber-Sudarshan State: Nodal Diagrams and Borel Resummation

本文提出基于Glauber-Sudarshan态路径积分的节点图方法显式构造四维de Sitter空间，通过Borel重和Gevrey渐近级数重现非微扰结构，证明其在弦理论中可克服no-go与swampland准则并在受控时间域内非微扰稳定，暗示宇宙学常数为正。

量子引力中的Wheeler-De Witt方程与Glauber-Sudarshan态的正则构造

Wheeler-De Witt equation and the Canonical Construction of the Glauber-Sudarshan States in Quantum Gravity

该研究针对量子引力中关联函数定义与涨落反作用的难题，提出通过构造Glauber-Sudarshan态，结合位移算子与Schwinger-Dyson方程解决问题，得到瞬态de Sitter相处于跨普朗克界限有效范围内的结论。

相干态与格劳伯-苏达山态：自举、施温格-凯尔迪什轮廓和莱夫谢茨缝杯

Coherent states versus Glauber-Sudarshan States: Bootstrapping, Schwinger-Keldysh Contours and Lefschetz Thimbles

研究在四维微分同胚不变理论中构建格劳伯-苏达山态，通过正则形式体系和路径积分分析其与相干态差异，检验构建一致性，表明其动力学受自举关系支配，还研究相关方程及态的结构解释。