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SUMMARY:Boundary Description of Microstates of the Non-Supersymmetric Two-
 Dimensional Black Hole - Ronak M Soni (DAMTP)
DTSTART:20220428T113000Z
DTEND:20220428T123000Z
UID:TALK173267@talks.cam.ac.uk
CONTACT:Chiung Hwang
DESCRIPTION:In the non-supersymmetric matrix quantum mechanics (MQM) dual 
 to the 2d black\nhole\, we identify a set of degenerate states as the dual
 s of black hole microstates. At leading order in\nlarge N \, the log of nu
 mber of these states (already calculated by Gross and Klebanov) matches th
 e\nBekenstein-Hawking entropy formula\, and also agrees with one of two ca
 ndidates found by Kazakov\nand Tseytlin. The mass term in Kazakov and Tsey
 tlin’s free energy also matches the energy of\nthese states conjectured 
 by Gross and Klebanov\; we show this conjecture. We also calculate the\nmi
 crocanonical entropy in a higher-energy phase\, which we conjecture to be 
 dual to the c = 0 phase\nof 2d string theory. We try to interpret our resu
 lts in string theoretic terms and find that it is\nconsistent with some ar
 guments of Sathiapalan\, Kogan and Atick and Witten regarding the phase\ns
 tructure of string theory. Finally\, we discuss a tantalising analogy to M
 otzkin walk models.
LOCATION:Potter Room\, DAMTP
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