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SUMMARY:Aspects of the D0 brane black hole and a SUSY SYK model
DTSTART:20230926T140000Z
DTEND:20230926T160000Z
DTSTAMP:20231210T052826Z
UID:indico-event-1321861@indico.cern.ch
DESCRIPTION:I will discuss the black hole solution dual to the BFSS matrix
model in the 't Hooft limit. The classical physics of this black hole is
invariant under a scale transformation\, or ``similarity\,'' that changes
the action by an overall multiplicative factor\, and is related to the pec
uliar temperature dependence of the entropy\, $S \\propto T^{9/5}$. The si
milarity fixes the masses of fluctuations around this background. This fac
t\, as well as a mathematical trick where we view the solution as the dime
nsional reduction of an $AdS_{2 + 9/5} \\times S^{8}$ geometry\, allows fo
r a simple computation of the black hole quasinormal modes.I will then dis
cuss an $\\mathcal{N} = 2$ supersymmetric SYK model. The large $N$ equatio
ns for this model are a generalization of equations that have been previou
sly studied as an unjustified truncation of the planar diagrams describing
BFSS. This model has a peculiar low energy behavior in which the scalar f
ields develop large expectation values. In contrast to BFSS\, it is found
to have a ground state entropy and appears sub-maximally chaotic at low te
mperatures. While the initial motivation to study the model was based on s
imilarities with BFSS\, the physics looks fairly different.Based on arXiv:
2303.09974\, arXiv:2309.08818.\n\nhttps://indico.cern.ch/event/1321861/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/1321861/
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