290 citations · 2.1k across the 50 of their papers we have counts for
51 papers
BPS black holes in flat space from quantum mechanics
Xiaoyi Shi, Gustavo J. Turiaci
Despite extensive work on BPS black holes in 4d flat space, there is no direct microstate counting from D-brane quantum mechanics in regimes described by Einstein gravity. We deriv…
Towards Strategy-Level RSI for Skill-Augmented Agents: Learning When to Reuse Skills from Execution Feedback
Shuang Guo, Xiaobo Sui, Fei Jiang +4
Long-running agents accumulate reusable Skills, but a Skill that is semantically relevant to a task is not necessarily worth loading in the current state. We study the applicabilit…
The Fate of Nucleated Black Holes in de Sitter Quantum Gravity
Xiaoyi Shi, Gustavo J. Turiaci, Chih-Hung Wu
The Euclidean Nariai geometry has long been proposed as the instanton describing the nucleation of maximal-mass black holes in de Sitter space. We place this interpretation on firm…
3D Gravity and Chaos in CFTs with Fermions
Jan Boruch, Elisa Tabor, Gustavo J. Turiaci
Pure 3d gravity in AdS is believed to admit a holographic description in terms of 2d CFT. We introduce a theory of fermionic 3d gravity where we sum over geometries equipped with s…
Multicentered black hole saddles for supersymmetric indices
Jan Boruch, Luca V. Iliesiu, Sameer Murthy +1
The supersymmetric index in string theory can sometimes have a discontinuous integer-valued jump at co-dimension one surfaces in moduli space called walls of marginal stability. Wh…
Spectrum of BPS black holes in
Matthew Heydeman, Xiaoyi Shi, Gustavo J. Turiaci
We uncover novel features in the spectrum of BPS and near-BPS states in asymptotically spacetimes. This follows from a careful analysis of…
Can black holes preserve supersymmetry?
Matthew Heydeman, Xiaoyi Shi, Gustavo J. Turiaci
The dynamics of near-BPS black holes are governed by the breaking of the conformal symmetry that emerges near their horizons. Using the classification of superconformal symmetries,…
The phase of the gravitational path integral
Xiaoyi Shi, Gustavo J. Turiaci
The gravitational path integral on can be interpreted either as evaluating a contribution to the norm of the Hartle-Hawking wavefunction conditional on spatial $S^…
The wavefunction of a quantum universe
Gustavo J. Turiaci, Chih-Hung Wu
We study quantum gravity corrections to the no-boundary wavefunction describing a universe with spatial topology . It has been suggested that quantum effects become…
Les Houches lectures on two-dimensional gravity and holography
Gustavo J. Turiaci
Lecture notes prepared for the Les Houches school "Quantum Geometry: Mathematical Methods for Gravity, Gauge Theories and Non-Perturbative Physics" that took place during the summe…
Looking at extremal black holes from very far away
Maciej Kolanowski, Donald Marolf, Ilija Rakic +2
Near-extremal black holes are subject to large quantum effects, which modify their low-temperature thermodynamic behavior. Hitherto, these quantum effects were analyzed by separati…
Supersymmetry breaking in SYK and the black hole spectrum
Matthew Heydeman, Yifei Liu, Gustavo J. Turiaci
The spectrum and dynamics of near-extremal black holes are strongly modified by quantum effects at low temperatures. When the extremal limit does not preserve any supersymmetry, th…
Gravitational index of the heterotic string
Yiming Chen, Sameer Murthy, Gustavo J. Turiaci
The fundamental heterotic string has a tower of BPS states whose supersymmetric index has an exponential growth in the charges. We construct the saddle-point of the gravitational p…
New forms of attraction: Attractor saddles for the black hole index
Jan Boruch, Luca V. Iliesiu, Sameer Murthy +1
The count of microstates for supersymmetric black holes is typically obtained from a supersymmetric index in weakly-coupled string theory. We find the saddles in the gravitational…
Spin-Statistics for Black Hole Microstates
Yiming Chen, Gustavo J. Turiaci
The gravitational path integral can be used to compute the number of black hole states for a given energy window, or the free energy in a thermal ensemble. In this article we expla…
Thermodynamics of the near-extremal Kerr spacetime
Ilija Rakic, Mukund Rangamani, Gustavo J. Turiaci
We examine the thermodynamics of a near-extremal Kerr black hole, and demonstrate that the geometry behaves as an ordinary quantum system with a vanishingly small degeneracy at low…
New insights on near-extremal black holes
Gustavo J. Turiaci
We describe two puzzles that arise from a semiclassical treatment of near-extremal black hole thermodynamics. Both puzzles are resolved by realizing that quantum corrections become…
2D dilaton gravity and the Weil-Petersson volumes with conical defects
Lorenz Eberhardt, Gustavo J. Turiaci
We derive the Weil-Petersson measure on the moduli space of hyperbolic surfaces with defects of arbitrary opening angles and use this to compute its volume. We conjecture a matrix…
JT Supergravity and Matrix Models
Gustavo J. Turiaci, Edward Witten
Generalizing previous results for and , we analyze JT supergravity on asymptotically AdS spaces with arbitrary topology and show that this theory of gravity…
Solvable Models of Quantum Black Holes: A Review on Jackiw-Teitelboim Gravity
Thomas G. Mertens, Gustavo J. Turiaci
We review recent developments in Jackiw-Teitelboim (JT) gravity. This is a simple solvable model of quantum gravity in two dimensions (that arises e.g. from the s-wave sector of hi…
Revisiting the Logarithmic Corrections to the Black Hole Entropy
Luca V. Iliesiu, Sameer Murthy, Gustavo J. Turiaci
Logarithmic corrections to the entropy of extremal black holes have been successfully used to accurately match degeneracies from microscopic constructions to calculations of the gr…
Black hole microstate counting from the gravitational path integral
Luca V. Iliesiu, Sameer Murthy, Gustavo J. Turiaci
Reproducing the integer count of black hole micro-states from the gravitational path integral is an important problem in quantum gravity. In this paper, we show that, by using supe…
Phases of Sachdev-Ye-Kitaev models
Matthew Heydeman, Gustavo J. Turiaci, Wenli Zhao
We study supersymmetric Sachdev-Ye-Kitaev (SYK) models with complex fermions at non-zero background charge. Motivated by multi-charge supersymmetric black holes, we…
BPS and near-BPS black holes in and their spectrum in SYM
Jan Boruch, Matthew T. Heydeman, Luca V. Iliesiu +1
We study quantum corrections in the gravitational path integral around nearly -BPS black holes in asymptotically space, dual to heavy states in 4D $\mathca…