Year: 2025
Type: article
Abstract: A bstract The spectrum and dynamics of near-extremal black holes is strongly modified by quantum effects at low temperatures. When the extremal limit does not preserve any supersymmetry, the density of states goes to zero at extremality and no extremal black holes remain. However, when the extremal limit is supersymmetric, a large microscopic degeneracy survives and there is a gap to the first excited black hole visible from gravity. In this article we study large N quantum mechanical models where supersymmetry is explicitly broken, allowing us to interpolate between these two qualitatively different pictures. We propose and analyze deformations of $$ \mathcal{N} $$ N = 2 SYK models with such a pattern of (super) symmetry breaking which violate the U(1) R -symmetry. These models feature a lifting of the BPS degeneracy and a closing of the spectral gap, and we further show that the large N soft effective action is given by a modification of the $$ \mathcal{N} $$ N = 2 Schwarzian theory in which the U(1) R mode becomes massive.
Source: Journal of High Energy Physics
Institutions: Harvard University, Princeton University, University of Washington
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G2595738051, G3378535215, G3398237449, G4437173897, G4689434848, THEORETICAL PHYSICS OF PARTICLES, FIELDS AND STRINGS, G638484911, Kavli Institute for Theoretical Physics, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, Black Hole Initiative Phase 3, HOLOGRAPHY: QUANTUM MECHANICAL ASPECTS OF BLACK HOLES
OpenAlex ID: W4411360727