标题： 双尺度SYK模型、弦图与de Sitter引力 显示英文标题

标题： Double-scaled SYK, Chords and de Sitter Gravity

摘要： 我们研究了定义在非旋转Schwarzschild-de Sitter时空相空间量子化得到的Hilbert空间上的三维de Sitter引力配分函数。 受到与双尺度SYK对应关系的启发，我们将哈密顿量识别为测量锥形缺陷角的引力Wilson线。 我们用正则变量表达哈密顿量，并发现它导致与双尺度SYK模型完全相同的弦规则和能谱。 我们利用所得的匹配来计算三维de Sitter引力中的配分函数和标量两点函数。 显示英文摘要

摘要： We study the partition function of 3D de Sitter gravity defined as the trace over the Hilbert space obtained by quantizing the phase space of non-rotating Schwarzschild-de Sitter spacetime. Motivated by the correspondence with double scaled SYK, we identify the Hamiltonian with the gravitational Wilson-line that measures the conical deficit angle. We express the Hamiltonian in terms of canonical variables and find that it leads to the exact same chord rules and energy spectrum as the double scaled SYK model. We use the obtained match to compute the partition function and scalar two-point function in 3D de Sitter gravity.