Matrix model with 3D BMS constraints

Bhattacharjee, Arindam; Neetu,

doi:10.1103/physrevd.105.066012

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Jhep01(2023)1381

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Cited by 2 publications

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“…Supertranslations may non-trivially affect this description. Along this line, we would also like to understand whether there is a connection with the construction of BMS 3 invariant matrix models [50].…”

Section: Jhep01(2023)138mentioning

confidence: 99%

JT gravity from holographic reduction of 3D asymptotically flat spacetime

Bhattacharjee

Saha

2023

J. High Energ. Phys.

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We attempt to understand the CFT1 structure underlying (2+1)D gravity in flat spacetime via dimensional reduction. We observe that under superrotation, the hyperbolic (and dS2) slices of flat spacetime transform to asymptotically (A)dS2 slices. We consider a wedge region bounded by two such surfaces as End-of-the-World branes and employ Wedge holography to perform holographic reduction. We show that once we consider fluctuating branes, the localised theory on the branes is Jackiw-Teitelboim (JT) theory. Finally, using the dual description of JT, we derive an 1D Schwarzian theory at the spatial slice of null infinity. In this dual Celestial (nearly) CFT, the superrotation mode of 3D plays the role of the Schwarzian derivative of the boundary time reparametrization mode.

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Section: Jhep01(2023)138mentioning

confidence: 99%