Article
Physics, Particles & Fields
Elena Caceres, Rodrigo Castillo Vasquez, Alejandro Vilar Lopez
Summary: The study derives the holographic entanglement entropy functional for a gravitational theory up to cubic order in the Riemann tensor, showcasing the differences between minimal and non-minimal splittings. The results are applied to specific examples and show that causal wedge inclusion is respected for a wide range of values of the cubic coupling.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Scott Aaronson, Jason Pollack
Summary: According to the AdS/CFT correspondence, the geometries of certain spacetimes can be fully determined by the von Neumann entropies of quantum states on their boundaries. This research investigates the possibility of reconstructing geometries from entropies in polynomial time. The study shows that in the case of a single 1D boundary divided into N atomic regions, a graph model for the bulk can be constructed in linear time based on a list of entropies satisfying Strong Subadditivity.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Bartlomiej Czech, Yunfei Wang
Summary: In holographic duality, semiclassical bulk duals of boundary states are subject to inequalities that restrict the von Neumann entropies of their subsystems. Existing inequalities only apply to up to N = 5 disjoint subsystems, but we have discovered a new inequality involving N = 7 disjoint regions. Our findings support a recent conjecture on the structure of holographic inequalities and provide insights into the potential for further exploration using similar tactics.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Gaurav Katoch, Swejyoti Mitra, Shubho R. Roy
Summary: This study extends our previous work on the complexity characteristics of Little String Theory (LST) using holography. By incorporating Lorentz violating deformations in a 2d field theory, the effects of Lorentz violation and nonlocality on quantum complexity are investigated. The study finds that these effects are intertwined in the UV divergence structure of quantum complexity.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Kaberi Goswami, K. Narayan
Summary: We study 4-dimensional Schwarzschild de Sitter black holes in the regime where the black hole mass is small compared with the de Sitter scale. Then the de Sitter temperature is very low compared with that of the black hole. We find that the entanglement entropy of radiation exhibits linear growth in time, indicative of the information paradox for the black hole. Self-consistently including an appropriate island emerging at late times near the black hole horizon leads to a reasonable Page curve. There are close parallels with flat space Schwarzschild black holes in the regime we consider.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Jaydeep Kumar Basak, Debarshi Basu, Vinay Malvimat, Himanshu Parihar, Gautam Sengupta
Summary: In this paper, we investigate the time evolution of reflected entropy and entanglement negativity for mixed state configurations in the radiation flux of moving mirrors using the AdS/BCFT duality. We show that the results obtained exactly agree with the corresponding holographic computations in the dual bulk AdS(3) geometry, and derive the analogues of the Page curves for these measures in the radiation flux of kink and escaping mirrors.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Alberto Guijosa, Yaithd D. Olivas, Juan F. Pedraza
Summary: This article explores the tension between two concepts in holography and proposes a solution with holographic rememorization. By introducing an infrared boundary action, the reduced density matrix can be fully identified. The article also discovers an interesting connection with AdS/BCFT and provides a simple example of equivalence in this context.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Alex Buchel
Summary: In this study, we analyze the dynamical fixed points of a strongly coupled gauge theory using holographic framework, and determine their perturbative stability or instability by computing the spectrum of the quasinormal modes. We also demonstrate that a stable fixed point can become unstable non-perturbatively, and discuss the role of entanglement entropy density as a litmus test for non-perturbative stability.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Arpan Bhattacharyya, S. Shajidul Haque, Eugene H. Kim
Summary: This research investigates circuit complexity to characterize chaos in multiparticle quantum systems and proposes a new diagnostic of quantum chaos based on complexity. Through explicit calculations on a toy model, the evolution of complexity is demonstrated as a possible diagnostic of chaos.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Seamus Fallows, Simon F. Ross
Summary: This study investigates the appearance of islands when a closed universe with gravity is entangled with a non-gravitating quantum system. The findings suggest that when the non-gravitating system has several components, the closed universe may be in a mixed state, unlike in simpler setups with a single quantum system where the closed universe was necessarily in a pure state. This mixed state's entropy is shown to be bounded by half of the coarse-grained entropy of the effective theory on the braneworld.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Salomeh Khoeini-Moghaddam, Farzad Omidi, Chandrima Paul
Summary: The study explores aspects of Hyperscaling Violating geometries at finite cutoff and zero temperature, focusing on holographic entanglement entropy, mutual information, and entanglement wedge cross section for strip-shaped entangling regions. Results show interesting features of HMI and EWCS compared to very small cutoff case, with HMI being a decreasing function and EWCS showing concavity changes. The location of phase transition and finite values are found to depend on the cutoff in this scenario.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Eyoab Bahiru
Summary: This article discusses the algebra of operators in the AdS-Rindler wedge, particularly in AdS(5)/CFT4. The algebra at the N = ∞ limit is explicitly constructed and its Type III1 nature is examined. The theory's 1/N corrections are considered, and a novel method of renormalizing the Ryu-Takayanagi surface area is utilized to renormalize several divergences, resulting in the algebra becoming Type II∞. This allows for the association of a density matrix with any state in the Hilbert space, leading to a von Neumann entropy.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Parul Jain, Niko Jokela, Matti Jarvinen, Subhash Mahapatra
Summary: This study examines various inequalities for entanglement wedge cross sections (EWCSs) as dual gravity probes for multiparty systems. Surprisingly, it is found that the EWCS is neither clearly monogamous nor polygamous for tripartite systems, but rather depends on the details and dimensionality of the gravity solutions. We propose weaker monogamy relations for dual entanglement measures, leading to a new lower bound on EWCS. The study is conducted on a variety of gravity backgrounds, including pure anti de Sitter spaces, anti de Sitter black branes, Dp-brane-induced backgrounds, and cigar geometries in generic dimensions.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Robert de Mello Koch, Garreth Kemp
Summary: The principle of the holography of information states that a copy of all the information available on a Cauchy slice is also available near the boundary. This redundancy in the theory is already present at low energy.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Venkatesa Chandrasekaran, Netta Engelhardt, Sebastian Fischetti, Sergio Hernandez-Cuenca
Summary: We have discovered a new on-shell replica wormhole and shown that it has lower action than the disconnected one. The stability of this replica wormhole depends on the signature of allowed perturbations. We have also introduced a new method for computing the on-shell action of replicated manifolds and found evidence that quantum corrections can sometimes stabilize this new saddle.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Sean Colin-Ellerin, Veronika E. Hubeny, Benjamin E. Niehoff, Jonathan Sorce
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Temple He, Veronika E. Hubeny, Mukund Rangamani
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Chandan Jana, R. Loganayagam, Mukund Rangamani
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Hewei Frederic Jia, Mukund Rangamani
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Jewel K. Ghosh, R. Loganayagam, Siddharth G. Prabhu, Mukund Rangamani, Akhil Sivakumar, V. Vishal
Summary: This text discusses how planar black holes in AdS capture the physics of diffusion in the dual field theory with their long-lived quasinormal modes, and explores how a probe system can record the long-term memory of black holes. By introducing a universal gauge invariant framework and designer scalars, the physics of gauge and gravitational perturbations of planar Schwarzschild-AdS black holes can be efficiently captured, separating long-lived modes from short-lived ones.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sean Colin-Ellerin, Xi Dong, Donald Marolf, Mukund Rangamani, Zhencheng Wang
Summary: This work is the first step in studying real-time replica wormholes, focusing on the associated real-time gravitational path integral and the construction of variational principles for saddle points. The resulting saddle points involve complex metrics and can be accessed by deforming the original contour of integration, without relying on analytic continuation. Additionally, for replica- and CPT-symmetric saddles, the metrics can be real in regions spacelike separated from a 'splitting surface', which is an important hallmark of unitarity in a field theory dual.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sean Colin-Ellerin, Xi Dong, Donald Marolf, Mukund Rangamani, Zhencheng Wang
Summary: The study continues the exploration of real-time replica wormholes, focusing on analytical computation of dynamics in low-dimensional gravitational theories. Examples in JT gravity and holographic two-dimensional CFTs are provided to demonstrate the computation of Renyi entropies, particularly the large central charge result for subregions comprising disjoint intervals from the real-time path integral.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Eduardo Casali, Donald Marolf, Henry Maxfield, Mukund Rangamani
Summary: This article discusses the relationship between the quantum gravity path integral and worldsheet string theory and Feynman diagrams of quantum field theory. It points out the various discrete choices that must be made in constructing a Hilbert space from such path integrals, and argues that the natural choices for quantum gravity differ from those used to construct quantum field theories.
CLASSICAL AND QUANTUM GRAVITY
(2022)
Article
Physics, Particles & Fields
Temple He, R. Loganayagam, Mukund Rangamani, Julio Virrueta
Summary: This article discusses the physics of momentum diffusion in a charged plasma and constructs an open effective field theory using holographic strategy.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Chi-Ming Chang, Sean Colin-Ellerin, Cheng Peng, Mukund Rangamani
Summary: This study investigates a three-dimensional disordered supersymmetric field theory, showing that the theory flows to a strongly coupled superconformal fixed point in the infra-red. The research obtains leading large N spectral data and operator product coefficients at the critical point, and demonstrates consistency with general expectations through comparisons with results derived in the conformal bootstrap program.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Chi-Ming Chang, Sean Colin-Ellerin, Cheng Peng, Mukund Rangamani
Summary: In this paper, we present a one-parameter family of large N disordered models in three dimensions, with and without supersymmetry. These models interpolate between the critical large N vector model and a classical higher spin theory, as well as a theory with a classical string dual. We analyze the spectrum and operator product expansion data of these theories, and discuss the behavior of both supersymmetric and nonsupersymmetric models.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Particles & Fields
Temple He, R. Loganayagam, Mukund Rangamani, Akhil Sivakumar, Julio Virrueta
Summary: This article investigates planar black holes in AdS, which are holographically dual to compressible relativistic fluids and possess long-lived phonon modes. These modes capture the physics of attenuated sound propagation and energy transfer in the plasma. The open effective field theory of the fluctuating phonon degree of freedom is described, and the dynamics of the phonon is encoded in a single scalar field with non-trivial spatial momentum dependence. The article also discusses the classification of gravitational modes based on their Markovianity index and remarks on the presence of additional spatially homogeneous zero modes.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Sergio Hernandez-Cuenca, Veronika E. Hubeny, Massimiliano Rota
Summary: This article investigates the relations between entanglement entropies for a holographic CFT boundary spacetime and proposes a reconstruction method of the holographic entropy cone. By studying graph models of holographic entanglement and extreme rays of the subadditivity cone, it is discovered that the reconstruction of the holographic entropy cone can be achieved with simple data.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Multidisciplinary
Felix M. Haehl, R. Loganayagam, Prithvi Narayan, Mukund Rangamani