42 citations · 372 across the 25 of their papers we have counts for
25 papers
Disorder-Induced Enhancement of Fermionic Superradiance
David Pascual Solis, Andrea Legramandi, Soumik Bandyopadhyay +1
Collective light-matter phenomena such as Dicke superradiance are often described as a collection of effective spins coupled homogeneously to a bosonic mode, giving rise to a colle…
From single-particle to many-body chaos in Yukawa--SYK: theory and a cavity-QED proposal
David Pascual Solis, Alex Windey, Soumik Bandyopadhyay +2
Understanding how quantum systems transition from integrable to fully chaotic behavior remains a central open problem in physics. The Sachdev--Ye--Kitaev (SYK) model provides a par…
Complexity transitions in chaotic quantum systems: Nonstabilizerness, entanglement, and fractal dimension in SYK and random matrix models
Gopal Chandra Santra, Alex Windey, Soumik Bandyopadhyay +2
Complex quantum systems -- composed of many, interacting particles -- are intrinsically difficult to model. When a quantum many-body system is subject to disorder, it can undergo t…
The moments of the spectral form factor in SYK
Andrea Legramandi, Neil Talwar
In chaotic quantum systems the spectral form factor exhibits a universal linear ramp and plateau structure with superimposed erratic oscillations. The mean signal and the statistic…
Many-body spectral transitions through the lens of the variable-range SYK2 model
Andrea Legramandi, Soumik Bandyopadhyay, Philipp Hauke
The Sachdev-Ye-Kitaev (SYK) model is a cornerstone in the study of quantum chaos and holographic quantum matter. Real-world implementations, however, deviate from the idealized all…
G-structures for black hole near-horizon geometries
Andrea Legramandi, Niall T. Macpherson, Achilleas Passias
We derive necessary and sufficient conditions for warped AdS solutions of Type II supergravity to preserve supersymmetry, in terms of bispinors. Such solutions gen…
The Holographic Map of an Evaporating Black Hole
Zsolt Gyongyosi, Timothy J. Hollowood, S. Prem Kumar +2
We construct a holographic map that takes the semi-classical state of an evaporating black hole and its Hawking radiation to a microscopic model that reflects the scrambling dynami…
Matrix Models and Holography: Mass Deformations of Long Quiver Theories in 5d and 3d
Mohammad Akhond, Andrea Legramandi, Carlos Nunez +2
We enlarge the dictionary between matrix models for long linear quivers preserving eight supercharges in and and type IIB supergravity backgrounds with AdS fact…
Massive flows in AdS/CFT
Mohammad Akhond, Andrea Legramandi, Carlos Nunez +2
We study five-dimensional Superconformal Field Theories of the linear quiver type. These are deformed by a relevant operator, corresponding to a homogeneous mass term…
Black Hole Information Recovery in JT Gravity
Zsolt Gyongyosi, Timothy J. Hollowood, S. Prem Kumar +2
We consider the issue of information recovery for an object carrying energy and entropy into a black hole using the generalized entropy formalism, in the context of JT gravity wher…
Grey-body Factors, Irreversibility and Multiple Island Saddles
Timothy J. Hollowood, S. Prem Kumar, Andrea Legramandi +1
We consider the effect of grey-body factors on the entanglement island prescription for computing the entropy of an arbitrary subset of the Hawking radiation of an evaporating blac…
Holographic description of SCFT compactifications
Andrea Legramandi, Carlos Nunez
We present three infinite families of supersymmetric Type IIB backgrounds with AdS, AdS and AdS factors, dual to SCFTs in , and space-time dimensions respect…
Electrostatic description of 3d linear quivers
Mohammad Akhond, Andrea Legramandi, Carlos Nunez
We present the holographic dual for the strongly coupled, low energy dynamics of balanced field theories in dimensions. The infinite family of Type IIB backgro…
Ephemeral Islands, Plunging Quantum Extremal Surfaces and BCFT channels
Timothy J. Hollowood, S. Prem Kumar, Andrea Legramandi +1
We consider entanglement entropies of finite spatial intervals in Minkowski radiation baths coupled to the eternal black hole in JT gravity, and the related problem involving free…
Electrostatic Description of Five-dimensional SCFTs
Andrea Legramandi, Carlos Nunez
In this paper we discuss an infinite class of AdS backgrounds in Type IIB supergravity dual to five dimensional SCFTs whose low energy description is in terms of linear quiver…
Islands in the Stream of Hawking Radiation
Timothy J. Hollowood, S. Prem Kumar, Andrea Legramandi +1
We consider the island formula for the entropy of subsets of the Hawking radiation in the adiabatic limit where the evaporation is very slow. We find a simple concrete `on-shell' f…
All AdS solutions in 10 and 11 dimensions
Andrea Legramandi, Gabriele Lo Monaco, Niall T. Macpherson
We classify AdS solutions preserving supersymmetry in ten and eleven dimensions and find the local form of each of them. These include the AdSS$^6…
Geometry of quantum complexity
Roberto Auzzi, Stefano Baiguera, G. Bruno De Luca +3
Computational complexity is a new quantum information concept that may play an important role in holography and in understanding the physics of the black hole interior. We consider…
Hawking Radiation Correlations of Evaporating Black Holes in JT Gravity
Timothy J. Hollowood, S. Prem Kumar, Andrea Legramandi
We consider the Hawking radiation emitted by an evaporating black hole in JT gravity and compute the entropy of arbitrary subsets of the radiation in the slow evaporation limit, an…
AdS solutions with from SS fibrations
Andrea Legramandi, Niall T. Macpherson
We study warped AdS solutions in massive IIA supergravity preserving and supersymmetry. We consider solutions whose internal spaces deco…
Breaking supersymmetry with pure spinors
Andrea Legramandi, Alessandro Tomasiello
For several classes of BPS vacua, we find a procedure to modify the PDEs that imply preserved supersymmetry and the equations of motion so that they still imply the latter but not…
On subregion action complexity in AdS and in the BTZ black hole
Roberto Auzzi, Stefano Baiguera, Andrea Legramandi +3
We analytically compute subsystem action complexity for a segment in the BTZ black hole background up to the finite term, and we find that it is equal to the sum of a linearly dive…
Mink Solutions of 10 and 11 Dimensional Supergravity
Andrea Legramandi, Niall T. Macpherson
We complete the classification of Mink solutions preserving supersymmetry and SU(2) R-symmetry parameterised by a round factor. We consider eleven-dimensi…
Timelike structures of ten-dimensional supersymmetry
Andrea Legramandi, Luca Martucci, Alessandro Tomasiello
In several contexts, supersymmetry can be reformulated in terms of calibrations, namely forms whose integrals measure minimal energies. It has been conjectured that this should be…