abstract stringlengths 3 192k | title stringlengths 4 857 |
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we examine recent claims that evidence for an overtone in the ringdown of the gw150914 binary black hole merger was a result of noise anomalies. we cannot reproduce these claims, finding that our previous analysis of this event is robust to data analysis choices and consistent with the expectation that strain after the... | revisiting the ringdown of gw150914 |
we compute the far-field time-domain waveform of the gravitational waves produced in the scattering of two spinning massive objects. the results include linear-in-spin ($s$) couplings and first-order gravitational corrections ($g^3$), and are valid for encounters in the weak-field regime. employing a field-theory frame... | gravitational bremsstrahlung in black-hole scattering at $\\mathcal{o}(g^3)$: linear-in-spin effects |
in the generalized off-shell free energy landscape, black holes can be treated as thermodynamic topological defects. the local topological properties of the spacetime can be reflected by the winding numbers at the defects, while the global topological nature can be classified by the topological number which is the sum ... | revisiting thermodynamic topologies of black holes |
it was recently shown that the von neumann algebras of observables dressed to the mass of a schwarzschild-ads black hole or an observer in de sitter are type ii, and thus admit well-defined traces. the von neumann entropies of "semi-classical" states were found to be generalized entropies. however, these arguments reli... | generalized black hole entropy is von neumann entropy |
in this second part of the study initiated in [1], we investigate holographic complexity for eternal black hole backgrounds perturbed by shock waves, with both the complexity=action (ca) and complexity=volume (cv) proposals. in particular, we consider vaidya geometries describing a thin shell of null fluid with arbitra... | holographic complexity in vaidya spacetimes. part ii |
the double copy relates scattering amplitudes in gauge and gravity theories. in this paper, we expand the scope of the double copy to construct spacetime metrics through a systematic perturbative expansion. the perturbative procedure is based on direct calculation in yang-mills theory, followed by squaring the numerato... | perturbative spacetimes from yang-mills theory |
we initiate a series of works where we study the interior of dynamical rotating vacuum black holes without symmetry. in the present paper, we take up the problem starting from appropriate cauchy data for the einstein vacuum equations defined on a hypersurface already within the black hole interior, representing the exp... | the interior of dynamical vacuum black holes i: the $c^0$-stability of the kerr cauchy horizon |
we present the imrphenomxhm frequency domain phenomenological waveform model for the inspiral, merger, and ringdown of quasicircular nonprecessing black hole binaries. the model extends the imrphenomxas waveform model [g. pratten, s. husa, c. garcía-quirós, m. colleoni, a. ramos-buades, h. estellés, and r. jaume, prece... | multimode frequency-domain model for the gravitational wave signal from nonprecessing black-hole binaries |
we study some aspects of the de sitter version of jackiw-teitelboim gravity. though we do not have propagating gravitons, we have a boundary mode when we compute observables with a fixed dilaton and metric at the boundary. we compute the no-boundary wavefunctions and probability measures to all orders in perturbation t... | two dimensional nearly de sitter gravity |
following previous work of ours in spherical symmetry, we here propose a new parametric framework to describe the spacetime of axisymmetric black holes in generic metric theories of gravity. in this case, the metric components are functions of both the radial and the polar angular coordinates, forcing a double expansio... | general parametrization of axisymmetric black holes in metric theories of gravity |
we study the p -v criticality and phase transition in the extended phase space of charged anti-de sitter black holes in canonical ensemble of ghost-free massive gravity, where the cosmological constant is viewed as a dynamical pressure of the black hole system. we give the generalized thermodynamic first law and the sm... | p -v criticality in the extended phase space of black holes in massive gravity |
we review potential low-frequency gravitational-wave sources, which are expected to be detected by taiji, a chinese space-based gravitational-wave detector, estimate the detection rates of these gravitational-wave sources and present the parameter estimation of massive black hole binaries. | taiji program: gravitational-wave sources |
the theory of hawking radiation can be tested in laboratory analogues of black holes. we use light pulses in nonlinear fiber optics to establish artificial event horizons. each pulse generates a moving perturbation of the refractive index via the kerr effect. probe light perceives this as an event horizon when its grou... | observation of stimulated hawking radiation in an optical analogue |
on september 14, 2015, at 09∶50:45 utc the two detectors of the laser interferometer gravitational-wave observatory (ligo) simultaneously observed the binary black hole merger gw150914. we report the results of a matched-filter search using relativistic models of compact-object binaries that recovered gw150914 as the m... | gw150914: first results from the search for binary black hole coalescence with advanced ligo |
we study the shadows of the fully non-linear, asymptotically flat einstein-dilaton-gauss-bonnet (edgb) black holes (bhs), for both static and rotating solutions. we find that, in all cases, these shadows are smaller than for comparable kerr bhs, i.e. with the same total mass and angular momentum under similar observati... | shadows of einstein-dilaton-gauss-bonnet black holes |
the central dogma of black hole physics — which says that from the outside a black hole can be described in terms of a quantum system with exp(area/4gn) states evolving unitarily — has recently been supported by computations indicating that the interior of the black hole is encoded in the hawking radiation of the exter... | the central dogma and cosmological horizons |
in this note we study the 1 + 1 dimensional jackiw-teitelboim gravity in lorentzian signature, explicitly constructing the gauge-invariant classical phase space and the quantum hilbert space and hamiltonian. we also semiclassically compute the hartle-hawking wave function in two different bases of this hilbert space. w... | the factorization problem in jackiw-teitelboim gravity |
the black-hole information paradox provides one of the sharpest foci for the conflict between quantum mechanics and general relativity and has become the proving-ground of would-be theories of quantum gravity. string theory has made significant progress in resolving this paradox, and has led to the fuzzball and microst... | fuzzballs and microstate geometries: black-hole structure in string theory |
we revisit the confinement/deconfinement transition in n = 4 super yang-mills (sym) theory and its relation to the hawking-page transition in gravity. recently there has been substantial progress on counting the microstates of 1/16-bps extremal black holes. however, there is presently a mismatch between the hawking-pag... | delayed deconfinement and the hawking-page transition |
by combining the ads/bcft correspondence and the brane world holography, we expect an equivalence relation between a boundary conformal field theory (bcft) and a gravitational system coupled to a cft. however, it still remains unclear how the boundary condition of the bcft is translated in the gravitational system. we ... | bcft and islands in two dimensions |
we systematically calculate the quantum extremal surface (qes) associated with hawking radiation for general d-dimensional (d ≥ 2) asymptotically flat (or ads) eternal black holes using the island formula. we collect the hawking radiation particles by a non-gravitational bath and find that a qes exists in the near-hori... | the universality of islands outside the horizon |
in an ordinary quantum field theory, the 'split property' implies that the state of the system can be specified independently on a bounded subregion of a cauchy slice and its complement. this property does not hold for theories of gravity, where observables near the boundary of the cauchy slice uniquely fix the state o... | failure of the split property in gravity and the information paradox |
we study the semi-classical thermodynamics of two-dimensional de sitter space (ds2) in jackiw-teitelboim (jt) gravity coupled to conformal matter. we extend the quasi-local formalism of brown and york to ds2, where a timelike boundary is introduced in the static patch to uniquely define conserved charges, including qua... | quasi-local energy and microcanonical entropy in two-dimensional nearly de sitter gravity |
isolated objects in asymptotically flat spacetimes in general relativity are characterized by their conserved charges associated with the bondi-metzner-sachs (bms) group. these charges include total energy, linear momentum, intrinsic angular momentum and center-of-mass location, and, in addition, an infinite number of ... | conserved charges of the extended bondi-metzner-sachs algebra |
motivated by (i) more and more interest in strong gravitational lensing by supermassive black holes due to the achievement of eht observations, (ii) the ongoing popular topic on the possibility of lorentz symmetry being broken in gravitation and its consequences, we will apply the einstein bumblebee gravity with lorent... | strong gravitational lensing and shadow constraint from m87* of slowly rotating kerr-like black hole |
we show that the implications of the generalized uncertainty principle (gup) in the black hole physics are consistent with the predictions of the corpuscular theory of gravity, in which a black hole is conceived as a bose-einstein condensate of weakly interacting gravitons stuck at the critical point of a quantum phase... | generalized uncertainty principle and corpuscular gravity |
we expand on our results in [1] to present a broad new class of gravitational observables in asymptotically anti-de sitter space living on general codimension-zero regions of the bulk spacetime. by taking distinct limits, these observables can reduce to well-studied holographic complexity proposals, e.g., the volume of... | complexity equals anything ii |
using the recently established formalism of a worldline quantum field theory description of the classical scattering of two spinless black holes, we compute the far-field time-domain waveform of the gravitational waves produced in the encounter at leading order in the post-minkowskian (weak field but generic velocity) ... | classical gravitational bremsstrahlung from a worldline quantum field theory |
variants of the black hole information paradox are studied in type iib string theory setups that realize four-dimensional gravity coupled to a bath. the setups are string theory versions of doubly-holographic karch/randall brane worlds, with black holes coupled to non-gravitating and gravitating baths. the 10d versions... | islands and page curves in 4d from type iib |
we investigate rotating effect on deconfinement phase transition in an einstein-maxwell-dilaton (emd) model in bottom-up holographic qcd approach. by constructing a rotating black hole, which is supposed to be dual to rotating strongly coupled nuclear matter, we investigate the thermodynamic quantities, including entro... | gluodynamics and deconfinement phase transition under rotation from holography |
out-of-time-order correlation functions provide a proxy for diagnosing chaos in quantum systems. we propose and analyze an interferometric scheme for their measurement, using only local quantum control and no reverse time evolution. our approach utilizes a combination of ramsey interferometry and the recently demonstra... | interferometric approach to probing fast scrambling |
it was recently shown that a scalar field suitably coupled to the gauss-bonnet invariant g can undergo a spin-induced linear tachyonic instability near a kerr black hole. this instability appears only once the dimensionless spin j is sufficiently large, that is, j ≳0.5 . a tachyonic instability is the hallmark of spont... | spin-induced scalarized black holes |
according to harlow and hayden [arxiv:1301.4504] the task of distilling information out of hawking radiation appears to be computationally hard despite the fact that the quantum state of the black hole and its radiation is relatively un-complex. we trace this computational difficulty to a geometric obstruction in the e... | the python's lunch: geometric obstructions to decoding hawking radiation |
non-linear electrodynamics (nled) theories are well-motivated extensions of qed in the strong field regime, and have long been studied in the search for regular black hole (bh) solutions. we consider two well-studied and well-motivated nled models coupled to general relativity: the euler-heisenberg model and the bronni... | magnetically charged black holes from non-linear electrodynamics and the event horizon telescope |
we study the propagation of probe scalar fields in the background of 4d einstein-gauss-bonnet black holes with anti-de sitter (ads) asymptotics and calculate the quasinormal modes. mainly, we show that the quasinormal spectrum consists of two different branches, a branch perturbative in the gauss-bonnet coupling consta... | perturbative and nonperturbative quasinormal modes of 4d einstein-gauss-bonnet black holes |
advances in our understanding of perturbation theory suggest the existence of a correspondence between classical general relativity and yang-mills theory. a concrete example of this correspondence, which is known as the double copy, was recently intro-duced for the case of stationary kerr-schild spacetimes. building on... | the double copy: bremsstrahlung and accelerating black holes |
we analysed the shadow cast by charged rotating black hole (bh) in presence of perfect fluid dark matter (pfdm). we studied the null geodesic equations and obtained the shadow of the charged rotating bh to see the effects of pfdm parameter γ, charge q and rotation parameter a, and it is noticed that the size as well as... | shadow and deflection angle of charged rotating black hole surrounded by perfect fluid dark matter |
given at pitp 2018 summer program entitled "from qubits to spacetime." the first lecture describes the meaning of quantum complexity, the analogy between entropy and complexity, and the second law of complexity. lecture two reviews the connection between the second law of complexity and the interior of black holes. i d... | three lectures on complexity and black holes |
we give a pedagogical review of how concepts from quantum information theory build up the gravitational side of the anti-de sitter/conformal field theory correspondence. the review is self-contained in that it only presupposes knowledge of quantum mechanics and general relativity; other tools-including holographic dual... | quantum information in holographic duality |
the concepts of operator size and computational complexity play important roles in the study of quantum chaos and holographic duality because they help characterize the structure of time-evolving heisenberg operators. it is particularly important to understand how these microscopically defined measures of complexity ar... | complexity growth of operators in the syk model and in jt gravity |
we discuss aspects of magnetically charged black holes in the standard model. for a range of charges, we argue that the electroweak symmetry is restored in the near horizon region. the extent of this phase can be macroscopic. if q is the integer magnetic charge, the fermions lead to order q massless two dimensional fer... | comments on magnetic black holes |
the links between the deformation parameter β of the generalized uncertainty principle (gup) to the two free parameters ω ^ and γ of the running newtonian coupling constant of the asymptotic safe gravity (asg) program, has been conducted recently in [phys. rev. d 105 (2022) 12, 124054. https://doi.org/10.1103/physrevd.... | investigating the connection between generalized uncertainty principle and asymptotically safe gravity in black hole signatures through shadow and quasinormal modes |
a novel four-dimensional einstein-gauss-bonnet gravity was formulated by glavan and lin (phys. rev. lett. 124:081301, 2020), which is intended to bypass the lovelock's theorem and to yield a non-trivial contribution to the four-dimensional gravitational dynamics. however, the validity and consistency of this theory has... | born-infeld black holes in 4d einstein-gauss-bonnet gravity |
two-dimensional materials such as graphene and transition metal dichalcogenides have attracted great attention because of their rich physics and potential applications in next-generation nanoelectronic devices. the family of two-dimensional materials was recently joined by atomically thin black phosphorus which possess... | high-quality sandwiched black phosphorus heterostructure and its quantum oscillations |
the (3 + 1)-dimensional einstein-gauss-bonnet theory of gravity which breaks the lorentz invariance in a theoretically consistent and observationally viable way has been recently suggested by aoki, gorji and mukohyama [5]. here we calculate grey-body factor for dirac, electromagnetic and gravitational fields and estima... | grey-body factors and hawking radiation of black holes in 4d einstein-gauss-bonnet gravity |
a generic, noneccentric binary black hole (bbh) system emits gravitational waves (gws) that are completely described by seven intrinsic parameters: the black hole spin vectors and the ratio of their masses. simulating a bbh coalescence by solving einstein's equations numerically is computationally expensive, requiring ... | numerical relativity waveform surrogate model for generically precessing binary black hole mergers |
in this study, we observe that, in the presence of the string cloud parameter a and the quintessence parameter γ, with the equation of state parameter $ \omega_q={-2}/{3} $ , the radius of the shadow of the schwarzschild black hole increases as compared with that in the pure schwarzschild black hole case. the existence... | shadows and gravitational weak lensing by the schwarzschild black hole in the string cloud background with quintessential field |
due to the failure of thermodynamics for low temperature near-extremal black holes, it has long been conjectured that a "thermodynamic mass gap" exists between an extremal black hole and the lightest near-extremal state. for non-supersymmetric near-extremal black holes in einstein gravity, with an ads$_2$ throat, no su... | the statistical mechanics of near-bps black holes |
in this paper we argue for a close connection between the non-existence of global symmetries in quantum gravity and a unitary resolution of the black hole information problem. in particular we show how the essential ingredients of recent calculations of the page curve of an evaporating black hole can be used to general... | global symmetry, euclidean gravity, and the black hole information problem |
the mass of a black hole has traditionally been identified with its energy. we describe a new perspective on black hole thermodynamics, one that identifies the mass of a black hole with chemical enthalpy, and the cosmological constant as thermodynamic pressure. this leads to an understanding of black holes from the vie... | black hole chemistry1 |
the existence of black holes and spacetime singularities is a fundamental issue in science. despite this, observations supporting their existence are scarce, and their interpretation is unclear. in this perspective we outline the case for black holes that has been made over the past few decades, and provide an overview... | tests for the existence of black holes through gravitational wave echoes |
asymptotically flat spacetimes admit both supertranslations and lorentz transformations as asymptotic symmetries. furthermore, they admit super-lorentz transformations, namely superrotations and superboosts, as outer symmetries associated with super-angular momentum and super-center-of-mass charges. in this paper, we p... | the poincaré and bms flux-balance laws with application to binary systems |
we explore the spacetime structure near nonextremal horizons in any spacetime dimension greater than two and discover a wealth of novel results: (i) different boundary conditions are specified by a functional of the dynamical variables, describing inequivalent interactions at the horizon with a thermal bath. (ii) the n... | spacetime structure near generic horizons and soft hair |
we review recent progress on the information paradox. we explain why exponentially small correlations in the radiation emitted by a black hole are sufficient to resolve the original paradox put forward by hawking. we then describe a refinement of the paradox that makes essential reference to the black-hole interior. th... | lessons from the information paradox |
higher spin gravity refers to extensions of gravity including at least one field of spin greater than two. these extensions are expected to provide manageable models of quantum gravity thanks to the infinite-dimensional (higher spin) gauge symmetry constraining them. one of the key aspects of higher spin gravity/symmet... | snowmass white paper: higher spin gravity and higher spin symmetry |
in this study, the gravitational deflection angle of photons in the weak field limit (or the weak deflection angle) and shadow cast by the electrically charged and spherically symmetric static kiselev black hole (bh) in the string cloud background are investigated. the influences of the bh charge q, quintessence parame... | weak deflection angle and shadow cast by the charged-kiselev black hole with cloud of strings in plasma |
when an incident wave scatters off of an obstacle, it is partially reflected and partially transmitted. in theory, if the obstacle is rotating, waves can be amplified in the process, extracting energy from the scatterer. here we describe in detail the first laboratory detection of this phenomenon, known as superradianc... | rotational superradiant scattering in a vortex flow |
we analyze the algebra of boundary observables in canonically quantised jt gravity with or without matter. in the absence of matter, this algebra is commutative, generated by the adm hamiltonian. after coupling to a bulk quantum field theory, it becomes a highly noncommutative algebra of type ii$_\infty$ with a trivial... | algebras and states in jt gravity |
we construct the boundary phase space in d-dimensional einstein gravity with a generic given co-dimension one null surface n as the boundary. the associated boundary symmetry algebra is a semi-direct sum of diffeomorphisms of n and weyl rescalings. it is generated by d towers of surface charges that are generic functio... | null boundary phase space: slicings, news & memory |
we derive an approximate analytical formula for the spectral density of the q -body sachdev-ye-kitaev (syk) model obtained by summing a class of diagrams representing leading intersecting contractions. this expression agrees with that of q -hermite polynomials, with q a nontrivial function of q ≥2 and the number of maj... | analytical spectral density of the sachdev-ye-kitaev model at finite n |
the classification of critical points of charged topological black holes (tbhs) in anti-de sitter spacetime (ads) under the power maxwell invariant (pmi)-massive gravity is accomplished within the framework of black hole chemistry (bhc). considering the grand canonical ensemble (gce), we show that d =4 black hole have ... | topology of nonlinearly charged black hole chemistry via massive gravity |
we consider the capacity of entanglement in models related with the gravitational phase transitions. the capacity is labeled by the replica parameter which plays a similar role to the inverse temperature in thermodynamics. in the end of the world brane model of a radiating black hole the capacity has a peak around the ... | probing hawking radiation through capacity of entanglement |
we present a wormhole solution in four dimensions. it is a solution of an einstein maxwell theory plus charged massless fermions. the fermions give rise to a negative casimir-like energy, which makes the wormhole possible. it is a long wormhole that does not lead to causality violations in the ambient space. it can be ... | traversable wormholes in four dimensions |
recently it was proposed that the entanglement entropy of the hawking radiation contains the information of a region including the interior of the event horizon, which is called "island." in studies of the entanglement entropy of the hawking radiation, the total system in the black hole geometry is separated into the h... | islands and stretched horizon |
we perform a feynman diagram calculation of the two-loop scattering amplitude for gravitationally interacting massive particles in the classical limit. conveniently, we are able to sidestep the most taxing diagrams by exploiting the test-particle limit in which the system is fully characterized by a particle propagatin... | classical gravitational scattering at o (g3) from feynman diagrams |
we study the population properties of merging binary black holes in the second ligo-virgo gravitational-wave transient catalog assuming they were all formed dynamically in gravitationally bound clusters. using a phenomenological population model, we infer the mass and spin distribution of first-generation black holes, ... | evidence for hierarchical black hole mergers in the second ligo-virgo gravitational wave catalog |
we study a precise and computationally tractable notion of operator complexity in holographic quantum theories, including the ensemble dual of jackiw-teitelboim gravity and two-dimensional holographic conformal field theories. this is a refined, "microcanonical" version of k-complexity that applies to theories with inf... | random matrix theory for complexity growth and black hole interiors |
recently the ligo and virgo collaborations reported the observation of gravitational-wave signal corresponding to the inspiral and merger of two black holes, resulting into formation of the final black hole. it was shown that the observations are consistent with the einstein theory of gravity with high accuracy, limite... | detection of gravitational waves from black holes: is there a window for alternative theories? |
these are lecture notes from a weeklong course in quantum complexity theory taught at the bellairs research institute in barbados, february 21-25, 2016. the focus is quantum circuit complexity---i.e., the minimum number of gates needed to prepare a given quantum state or apply a given unitary transformation---as a unif... | the complexity of quantum states and transformations: from quantum money to black holes |
we find a mechanism by which antibranes placed in a warped deformed conifold throat can destroy the stabilization of the size of the sphere at the tip, collapsing it to zero size. this conifold destabilization mechanism can be avoided by turning on a large amount of flux on the sphere, but tadpole cancelation makes thi... | uplifting runaways |
we use conformal supergravity techniques to study four-derivative corrections in four-dimensional gauged supergravity. we show that the four-derivative lagrangian for the propagating degrees of freedom of the n = 2 gravity multiplet is determined by two real dimensionless constants. we demonstrate that all solutions of... | higher-derivative supergravity, ads4 holography, and black holes |
we study the euclidean gravitational path integral computing the rényi entropy and analyze its behavior under small variations. we argue that, in einstein gravity, the extremality condition can be understood from the variational principle at the level of the action, without having to solve explicitly the equations of m... | entropy, extremality, euclidean variations, and the equations of motion |
we develop a novel amplitude bootstrap technique manifestly free of unphysical poles for classically spinning particles interacting with gravitons utilizing only the gauge/gravity double-copy and physical factorization limits. combined with non-factorization polynomial contact contributions from physical data for kerr ... | covariant compton amplitudes in gravity with classical spin |
we prove the non-linear asymptotic stability of the schwarzschild family as solutions to the einstein vacuum equations in the exterior of the black hole region: general vacuum initial data, with no symmetry assumed, sufficiently close to schwarzschild data evolve to a vacuum spacetime which (i) possesses a complete fut... | the non-linear stability of the schwarzschild family of black holes |
the wkb approach for finding quasinormal modes of black holes, suggested in schutz and will (1985 astrophys. j. lett. 291 l33-6) by schutz and will at the first order and later developed to higher orders (iyer and will 1987 phys. rev. d 35 3621; konoplya 2003 phys. rev. d 68 024018; matyjasek and opala 2017 phys. rev. ... | higher order wkb formula for quasinormal modes and grey-body factors: recipes for quick and accurate calculations |
the evaporation of black holes raises a number of conceptual issues, most of them related to the final stages of evaporation, where the interplay between the central singularity and hawking radiation cannot be ignored. regular models of black holes replace the central singularity with a nonsingular spacetime region, in... | on the viability of regular black holes |
we argue that the gravitational shock wave computation used to extract the scrambling rate in strongly coupled quantum theories with a holographic dual is directly related to probing the system's hydrodynamic sound modes. the information recovered from the shock wave can be reconstructed in terms of purely diffusionlik... | black hole scrambling from hydrodynamics |
we compute the scattering amplitude for classical black-hole scattering to third order in the post-minkowskian expansion, keeping all terms needed to derive the scattering angle to that order from the eikonal formalism. our results confirm a conjectured relation between the real and imaginary parts of the amplitude by ... | the amplitude for classical gravitational scattering at third post-minkowskian order |
we construct asymptotically flat, spinning, regular on and outside an event horizon, scalarized black holes (sbhs) in extended scalar-tensor-gauss-bonnet models. they reduce to kerr bhs when the scalar field vanishes. for an illustrative choice of nonminimal coupling, we scan the domain of existence. for each value of ... | spontaneously scalarized kerr black holes in extended scalar-tensor-gauss-bonnet gravity |
large, energy-dependent x-ray polarisation is observed in 4u 1630-47, a black hole in an x-ray binary, in the high-soft emission state. in this state, x-ray emission is believed to be dominated by a thermal, geometrically thin, optically thick accretion disc. however, the observations with the imaging x-ray polarimetry... | the high polarisation of the x-rays from the black hole x-ray binary 4u 1630-47 challenges standard thin accretion disc scenario |
in order to study the pseudo entropy of timelike subregions holographically, the previous smooth space-like extremal surface was recently generalized to mix space-like and time-like segments and the area becomes complex value. this paper finds that, if one tries to use such kind of piecewise smooth extremal surfaces to... | on holographic time-like entanglement entropy |
in classical general relativity (gr), an observer falling into an astrophysical black hole is not expected to experience anything dramatic as she crosses the event horizon. however, tentative resolutions to problems in quantum gravity, such as the cosmological constant problem, or the black hole information paradox, in... | echoes from the abyss: tentative evidence for planck-scale structure at black hole horizons |
we present two particular decoding procedures for reconstructing a quantum state from the hawking radiation in the hayden-preskill thought experiment. we work in an idealized setting and represent the black hole and its entangled partner by $n$ epr pairs. the first procedure teleports the state thrown into the black ho... | efficient decoding for the hayden-preskill protocol |
the discovery of new four-dimensional black hole solutions presents a new approach to understand the gauss-bonnet gravity in low dimensions. in this paper, we test the gauss-bonnet gravity by studying the phase transition and microstructures for the four-dimensional charged anti-de sitter black hole. in the extended ph... | extended thermodynamics and microstructures of four-dimensional charged gauss-bonnet black hole in ads space |
we obtain exact bardeen black holes to the regularized $4d$ einstein--gauss--bonnet (egb) gravity minimally coupled with the nonlinear electrodynamics (ned). in turn, we analyze the horizon structure to determine the effect of gb parameter $\alpha$ on the minimum cutoff values of mass, $m_0$, and magnetic monopole char... | bardeen black holes in the regularized $4d$ einstein--gauss--bonnet gravity |
this letter describes a model-agnostic search for pairs of jets (dijets) produced by resonant and non-resonant phenomena beyond the standard model in 3.6 fb-1 of proton-proton collisions with a centre-of-mass energy of √{ s} = 13 tev recorded by the atlas detector at the large hadron collider. the distribution of the i... | search for new phenomena in dijet mass and angular distributions from pp collisions at √{ s} = 13 tev with the atlas detector |
we suggest that the holographic principle, combined with recent technological advances in atomic, molecular, and optical physics, can lead to experimental studies of quantum gravity. as a specific example, we consider the sachdev-ye-kitaev (syk) model, which consists of spin-polarized fermions with an all-to-all comple... | creating and probing the sachdev-ye-kitaev model with ultracold gases: towards experimental studies of quantum gravity |
when the bulk geometry in ads/cft contains a black hole, boundary subregions may be sufficient to reconstruct certain bulk operators if and only if the black hole microstate is known, an example of state dependence. reconstructions exist for any microstate, but no reconstruction works for all microstates. we refine thi... | learning the alpha-bits of black holes |
we construct the holographic dictionary for both running and constant dilaton solutions of the two dimensional einstein-maxwell-dilaton theory that is obtained by a circle reduction from einstein-hilbert gravity with negative cosmological constant in three dimensions. this specific model ensures that the dual theory ha... | ads2 holographic dictionary |
we revisit the recent debate on the evidence for an overtone in the black hole ringdown of gw150914. by gating and inpainting the data, we discard the contamination from earlier parts of the gravitational wave signal before ringdown. this enables the parameter estimation to be conducted in the frequency domain, which i... | a frequency-domain perspective on gw150914 ringdown overtone |
the purpose of this chapter is to provide an overview of the exciting field of black hole quasi-normal modes and its capabilities to test general relativity in the 21st century. after motivating this line of research, we provide a qualitative introduction to the concept of quasi-normal modes and outline black hole pert... | testing general relativity with black hole quasi-normal modes |
recent developments have indicated that in addition to out-of-time ordered correlation functions (otocs), quantum chaos also has a sharp manifestation in the thermal energy density two-point functions, at least for maximally chaotic systems. the manifestation, referred to as pole-skipping, concerns the analytic behavio... | many-body chaos and energy dynamics in holography |
the bps sector in duality has been fertile ground for the exploration of gauge/gravity duality, from the match between black hole entropy and the cft elliptic genus to the construction of large families of geometrical microstates and the identification of the corresponding states in the cft. worldsheet methods provide ... | on the bps sector in ads 3 /cft 2 holography |
we review recent developments in jackiw-teitelboim gravity. this is a simple solvable model of quantum gravity in two dimensions (that arises e.g. from the s-wave sector of higher dimensional gravity systems with spherical symmetry). due to its solvability, it has proven to be a fruitful toy model to analyze important ... | solvable models of quantum black holes: a review on jackiw-teitelboim gravity |
black holes drive powerful plasma jets to relativistic velocities. this plasma should be collisionless, and self-consistently supplied by pair creation near the horizon. we present general-relativistic collisionless plasma simulations of kerr-black-hole magnetospheres which begin from vacuum, inject e± pairs based on l... | first-principles plasma simulations of black-hole jet launching |
the origin of black hole mergers discovered by the ligo1 and virgo2 gravitational-wave observatories is currently unknown. gw1905213,4 is the heaviest black hole merger detected so far. its observed high mass and possible spin-induced orbital precession could arise from the binary having formed following a close encoun... | eccentricity estimate for black hole mergers with numerical relativity simulations |
in this paper, we extend our previous work [d. wu, phys. rev. d 107, 024024 (2023), 10.1103/physrevd.107.024024] to the more general cases with a negative cosmological constant, and investigate the topological numbers for the singly rotating kerr-ads black holes in all dimensions and the four-dimensional kerr-newman-ad... | topological classes of thermodynamics of rotating ads black holes |
we provide a detailed examination of a thermal out-of-time-order correlator (otoc) growing exponentially in time in systems without chaos. the system is a one-dimensional quantum mechanics with a potential whose part is an inverted harmonic oscillator. we numerically observe the exponential growth of the otoc when the ... | exponential growth of out-of-time-order correlator without chaos: inverted harmonic oscillator |
we apply the hilbert series to extend the gravitational action for a scalar field to a complete, non-redundant basis of higher-dimensional operators that is quadratic in the scalars and the weyl tensor. such an extension of the action fully describes tidal effects arising from operators involving two powers of the curv... | tidal effects in quantum field theory |
we discuss holographic models of extremal and non-extremal black holes in contact with a bath in d dimensions, based on a brane world model introduced in [1]. the main benefit of our setup is that it allows for a high degree of analytic control as compared to previous work in higher dimensions. we show that the appeara... | quantum extremal islands made easy. part ii. black holes on the brane |
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