Article
Physics, Particles & Fields
Yanyan Bu, Tuna Demircik, Michael Lublinsky
Summary: This study derives an effective diffusion behavior of a conserved U(1) charge to all orders in the derivative expansion within a holographic model dual to the Schwinger-Keldysh closed time path. A systematic approach to solving the 5D Maxwell equations in a doubled Schwarzschild-AdS(5) black brane geometry is developed. It is found that the constitutive relation for the stochastic charge current includes a term induced by thermal fluctuations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Youka Kaku, Keiju Murata, Jun Tsujimura
Summary: The paper introduces a method to observe the photon ring of a superconductor dual to an asymptotically anti-de Sitter black hole on a two-dimensional sphere. By studying the relationship between the electric current and Maxwell field on both gravity and field theory sides, the dissipative part of the electric current is used for imaging the black hole, with results indicating that the charged scalar condensate affects the discontinuous changes in the size of the photon ring.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Po-Chun Sun, Da-Shin Lee, Chen-Pin Yeh
Summary: This paper employs the holographic approach to study thermalization, considering anisotropic scalings. The growth of entanglement entropy characterizes the thermalization rate after quench, and the thermalization process in both large and small R limits is investigated. The obtained results can be compared with experiments and other methods, providing a generalization of previous works in this field.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Haiming Yuan, Xian-Hui Ge
Summary: This study investigates the pole-skipping phenomenon of Green's functions in different geometries and the universality of pole-skipping points. Near horizon analysis of bulk equations of motion in holography provides a more straightforward method to derive pole-skipping points. The complex hydrodynamic analyses reveal the characteristics of pole-skipping points in the Lifshitz background.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Shao-Kai Jian, Brian Swingle
Summary: In this study, the entanglement transition in monitored Brownian SYK chains in the large-N limit is investigated. The steady state n-th Renyi entropy is found to saturate to the Page value in the n -> 1 limit without measurement. In the presence of measurements, the analytical continuation n -> 1 is performed using the cyclic symmetric solution. The result shows a continuous von Neumann entanglement entropy transition from volume-law to area-law occurs at the point of replica symmetry unbreaking as the monitoring rate increases.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Gaston Giordano, Nicolas Grandi, Adrian Lugo
Summary: The study investigates instabilities in strongly coupled metallic systems using a modified Pomeranchuk technique applied to weakly coupled fermions in a curved AdS bulk. The resulting unstable modes correspond to instabilities in the dual holographic metal. By exploring the phase diagram at zero temperature with varying couplings, the researchers find a wide region where the system is stable and localized around the origin of coupling space.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Lewis Sword, David Vegh
Summary: This paper introduces modifications to the holographic superconductor model by adding an axion field term and an Einstein-Maxwell-scalar (EMS) coupling term, and explores their effects on the condensate and black hole interior dynamics. It is found that increasing the EMS coupling parameter changes previously observed features, leading to the geometry entering a Kasner regime after a large-r collapse.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Peng Liu, Zhe Yang, Chao Niu, Cheng-Yong Zhang, Jian-Pin Wu
Summary: In this study, we investigate the mixed-state entanglement in AdS Born-Infeld (BI) theory and find that increasing the BI factor enhances the entanglement wedge cross-section (EWCS), which is crucial for constructing stable quantum circuits. Furthermore, we show the important role of the BI term in governing the interplay between nonlinear electromagnetic effects and entanglement.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Peng Liu, Jian-Pin Wu
Summary: This study focuses on the anisotropic properties of dynamical quantities in a two-lattice system. The research shows that even a small deviation from isotropy can lead to distinct phase structures and non-AdS(2) x R-2 infrared fixed points. The butterfly velocity and charge diffusion are also effective in diagnosing quantum phase transitions in this anisotropic lattice system.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Peng Liu, Chao Niu, Zi-Jian Shi, Cheng-Yong Zhang
Summary: In the holographic massive gravity theory, the entanglement wedge cross-section (EWCS) and mutual information (MI) exhibit opposite behaviors in the critical region, indicating that EWCS captures different degrees of freedom from MI. Furthermore, EWCS, MI, and HEE show the same scaling behavior in the critical region. We provide an analytical understanding of this phenomenon, as well as two mechanisms of quantum information scaling behavior in the thermodynamic phase transition by comparing the behavior in holographic superconductors.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Luca Iliesiu, Gustavo J. Turiaci
Summary: In this study, the partition function of Reissner-Nordstrom near-extremal black holes at fixed charge is calculated, revealing a continuum of states at the expected gap energy scale instead of a gap.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yi Ling, Meng-He Wu
Summary: This study investigates the interaction between pair density waves, charge density waves, and uniform superconducting order in a striped superconductor. It reveals a balance between these different orders and their effects, showing that the presence of uniform SC order can increase the critical temperature of CDW but suppress its charge density amplitude. The study also demonstrates that among all possible solutions, the black hole in the SSC phase has the lowest free energy and is thus thermodynamically favored.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Lewis Sword, David Vegh
Summary: In this study, the planar anti-de Sitter black hole in the p-wave holographic superconductor model is examined. The critical coupling value is identified as the determinant of the phase transition type. Beyond the horizon, flat spacetime emerges at specific temperatures. Numerical analysis near these temperatures reveals the presence of a large number of alternating Kasner epochs.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Mirmani Mirjalali, Seyed Ali Hosseini Mansoori, Leila Shahkarami, Morteza Rafiee
Summary: In this paper, the internal structure of a charged hairy black hole solution in the non-linear massive gravity is investigated. The impact of various configurations of massive gravity on the condensate operator is considered, and the black hole interior dynamics are probed. It is found that the distinguishing features for the interior dynamics appear when the large massive gravity parameter is taken into account.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Zhe Yang, Fang-Jing Cheng, Chao Niu, Cheng-Yong Zhang, Peng Liu
Summary: In this paper, the mixed-state entanglement in a model of p-wave superconductivity phase transition using holographic methods is investigated. Several entanglement measures, including holographic entanglement entropy (HEE), mutual information (MI), and entanglement wedge cross-section (EWCS), are calculated. The results show critical behavior at the phase transition points, with the EWCS exhibiting opposite temperature behavior compared to the HEE. The behavior of thermodynamics and holographic quantum information at the zeroth-order phase transition point is found to be opposite to that observed in the first-order phase transition. Additionally, a universal inequality in the growth rates of EWCS and MI near critical points in thermal phase transitions is uncovered, suggesting that MI captures more information than EWCS when a phase transition first occurs.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Oscar J. C. Dias, Gavin S. Hartnett, Jorge E. Santos
Summary: This work investigates the variation of the covariant Noether charges for solutions of type IIB 10-dimensional supergravity or 11-dimensional supergravity, showing that it is integrable for asymptotically scale-invariant solutions. As a result, energy density and conjugate chemical potentials can be defined, obeying thermodynamic laws and relations. The study demonstrates that these thermodynamic relations imply integrability of the Noether charge, allowing unambiguous definition of energy and other thermodynamic charges.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Physics, Multidisciplinary
William D. Biggs, Jorge E. Santos
Summary: In this study, rotating black hole solutions in the Randall-Sundrum II (RSII) model are found by numerically solving a three-dimensional PDE problem. The area and equatorial innermost stable orbits of these solutions are computed. The results show that for large black holes compared with the AdS length scale, the black hole behaves as a four-dimensional object approaching the Kerr metric on the brane, while for small black holes, the solution tends to a five-dimensional Myers-Perry black hole with a single nonzero rotation parameter aligned with the brane. This departure from exact four-dimensional gravity in RSII model may lead to different predictions for rotating black holes compared to standard four-dimensional general relativity.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Particles & Fields
Oscar J. C. Dias, Gary T. Horowitz, Jorge E. Santos
Summary: This study focuses on a family of charged black holes that develop scalar hair as their charge increases at fixed mass. Surprisingly, the maximum charge for a given mass corresponds to a nonsingular hairy black hole with nonzero Hawking temperature. The implications for Hawking evaporation are discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Filippo Camilloni, Oscar J. C. Dias, Gianluca Grignani, Troels Harmark, Roberto Oliveri, Marta Orselli, Andrea Placidi, Jorge E. Santos
Summary: This study focuses on the BZ split-monopole model, resolving issues around outer light surface behavior, presenting a new perturbative approach extended to higher orders, improving consistency with numerical simulations, and proposing a novel numerical procedure.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Physics, Particles & Fields
Alex Davey, Oscar J. C. Dias, Paul Rodgers, Jorge E. Santos
Summary: This article discusses the violations and respects of Strong Cosmic Censorship (SCC) in different types of black holes in various spacetime dimensions. It also explores the characteristics of the scalar field quasinormal mode spectra related to SCC.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Oscar J. C. Dias, Mahdi Godazgar, Jorge E. Santos
Summary: The frequency spectra of gravito-electromagnetic perturbations of the KN black hole have been computed and it has been found that there are two families of QNMs that display eigenvalue repulsion. The perturbation equations can be solved analytically using a near-horizon expansion, providing a good approximation to the numerical data near-extremality. This manuscript provides an extended study of these properties, including the derivation of a gauge invariant system of coupled PDEs, frequency approximations, and a deeper understanding of eigenvalue repulsion.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Donald Marolf, Jorge E. Santos
Summary: This study examines the stability of black hole saddles inside a spherical reflecting cavity, finding that coupled modes can be diagonalized in the Lichnerowicz operator to define a natural generalization of the pure-trace Wick-rotation recipe. This recipe reproduces the expected result from black hole thermodynamics, where large Euclidean black holes are stable saddles while small Euclidean black holes are unstable.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Gary T. Horowitz, Maciej Kolanowski, Jorge E. Santos
Summary: We studied the geometry near the horizon of a four-dimensional extremal black hole. When the cosmological constant is negative, we found that tidal forces diverge as one crosses the horizon, and this singularity is stronger for larger black holes. This applies to generic nonspherical black holes, and all scalar curvature invariants remain finite. Furthermore, nonextremal black holes have tidal forces that diverge in the extremal limit, reflecting in anomalous scaling of the specific heat with temperature holographically. Similar, albeit weaker, effects are present when the cosmological constant is positive, but not when it vanishes.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Donald Marolf, Jorge E. Santos
Summary: This study resolves the tension between the stability of the microcanonical ensemble for gravitating systems and the rapid decay of the negative mode of Schwarzschild black holes. By constructing the microcanonical partition function and applying Wick rotations, we obtained a positive definite action for linear perturbations. Most of the study was conducted in a cavity with reflecting boundary conditions.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
William D. Biggs, Jorge E. Santos
Summary: We construct the holographic duals to a large N, strongly coupled N = 4 super Yang-Mills conformal field theory defined on a four-dimensional de Sitter-Schwarzschild background. There are two distinct five-dimensional bulk solutions: the static black tunnel with two disconnected horizons, and the black hammock with one horizon in the bulk. The hammock horizon is not a Killing horizon, possessing interesting properties like non-vanishing expansion and shear, and allowing classical flow along it.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Gary T. Horowitz, Maciej Kolanowski, Jorge E. Santos
Summary: In holography, the IR behavior of a quantum system at nonzero density is described by the near horizon geometry of an extremal charged black hole. It is commonly believed that for systems on S-3, this near horizon geometry is AdS(2) x S-3. However, we show that this is not the case and propose a new near horizon geometry that is stable under certain perturbations and develops in nonextremal, SO(3)-invariant charged black holes. Our findings suggest that the previously believed stable IR fixed point is not accurate.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Oscar J. C. Dias, Prahar Mitra, Jorge E. Santos
Summary: We systematically search for supergravity solutions that are dual to thermal states in N = 4 SYM at finite chemical potential via the AdS(5)/CFT4 correspondence. These solutions dominate the microcanonical ensemble and are required for reproducing the microscopic entropy of AdS black holes. Using analytical and numerical methods, we construct and study static charged hairy solitonic and black hole solutions with global AdS(5) asymptotics. Our findings provide a good understanding of the full phase space of SYM thermal states with three arbitrary chemical potentials, along with the known phases of the truncation with three equal charges.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Oscar J. C. Dias, Takaaki Ishii, Keiju Murata, Jorge E. Santos, Benson Way
Summary: We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity originating from the superradiant instability of the Myers-Perry black string. The helical black string possesses helical isometries generated by linear combinations of time translation, shifts along the string, and rotation, which are individually broken by the superradiant instability. Despite the absence of momentum in the string direction, the helical black string exhibits nonzero horizon velocity.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Oscar J. C. Dias, Mahdi Godazgar, Jorge E. Santos, Gregorio Carullo, Walter Del Pozzo, Danny Laghi
Summary: The study focused on gravitational and electromagnetic perturbations of the Kerr-Newman black hole, identifying unique phenomena in the Quasinormal Mode families. The derived QNM spectra are crucial for understanding gravitational emissions in astrophysical environments and extracting observational implications of new physics scenarios.
Article
Astronomy & Astrophysics
Gregorio Carullo, Danny Laghi, Nathan K. Johnson-McDaniel, Walter Del Pozzo, Mahdi Godazgar, Jorge E. Santos, Oscar J. C. Dias
Summary: We constructed a template to study the postmerger phase of a binary black hole coalescence with a remnant U(1) charge. Our analysis showed that it is difficult to distinguish between charged and uncharged hypotheses based on purely postmerger analysis. However, by analyzing the full signal, we were able to obtain upper limits on the black hole charge-to-mass ratio. This model can provide a robust measurement of the charge-to-mass ratio for certain values when simulating a loud signal observed by the LIGO-Virgo network.