Non-perturbative de Sitter Jackiw-Teitelboim gravity

被引:0
|
作者
Cotler, Jordan [1 ]
Jensen, Kristan [2 ]
机构
[1] Harvard Univ, Soc Fellows, Cambridge, MA 02138 USA
[2] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 12期
基金
加拿大自然科学与工程研究理事会; 美国国家科学基金会;
关键词
2D Gravity; de Sitter space; COADJOINT ORBITS; QUANTIZATION; MODELS;
D O I
10.1007/JHEP12(2024)016
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
With non-perturbative de Sitter gravity and holography in mind, we deduce the genus expansion of de Sitter Jackiw-Teitelboim (dS JT) gravity. We find that this simple model of quantum cosmology has an effective string coupling which is pure imaginary. This imaginary coupling gives rise to alternating signs in the genus expansion of the dS JT S-matrix, which as a result appears to be Borel-Le Roy resummable. Furthermore dS JT gravity is formally an analytic continuation of AdS JT gravity, and behaves like a matrix integral with a negative number of degrees of freedom.
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页数:42
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