Article
Physics, Particles & Fields
Davood Momeni, Phongpichit Channuie
Summary: This study investigates exact solutions for both Jackiw-Teitelboim gravity and its deformed version, utilizing proper integral transformations over Euclidean time coordinates to examine precise solutions for hyperbolic coverage, cusp geometry, and other compact sectors of the AdS2 spacetime manifold.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Clifford Johnson
Summary: This article explores recently proposed definitions of JT gravity and supergravities, based on combinations of minimal string models, focusing on physics beyond perturbative expansion in spacetime topology. By using a combination of analytical and numerical methods, physics can be extracted with high accuracy in a simple controlled truncation scheme. Nonperturbative spectral densities are explicitly computed and displayed, including important contributions from wormhole geometries.
Article
Physics, Particles & Fields
Lucrezia Ravera, Utku Zorba
Summary: We present non-and ultra-relativistic Jackiw- Teitelboim (JT) supergravity as metric BF theories based on the extended Newton-Hooke and extended AdS Carroll superalgebras in two spacetime dimensions, respectively. The extended Newton-Hooke structure, and, in particular, the invariant metric necessary for the BF construction of non-relativistic JT supergravity, is obtained by performing an expansion of the N = 2 AdS(2) superalgebra. Finally, we provide the Carrollian JT supergravity action in the BF formalism.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Clifford Johnson
Summary: The proposed construction provides a complete definition for the family of Jackiw-Teitelboim supergravities, connecting to matrix models, using a combination of minimal string theories. This nonperturbative physics construction is stable and well-defined, revealing special properties for half-integer Gamma values in the supergravity models.
Article
Astronomy & Astrophysics
Georgios Fanaras, Alexander Vilenkin
Summary: We study the quantum cosmology of 2D Jackiw-Teitelboim gravity with Lambda > 0 and calculate the Hartle-Hawking wave function for this model in a minisuperspace framework. By establishing a correspondence between JT gravity and the Kantowski-Sachs model, we obtain the semiclassical Hartle-Hawking wave function and derive a probability distribution for the dilaton field using the methods of Picard-Lefschetz theory.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Srijit Bhattacharjee, Subhodeep Sarkar, Arpan Bhattacharyya
Summary: This study focuses on linear scalar perturbations of black holes in JT gravity in 2D models, obtaining exact expressions for quasinormal mode frequencies and verifying them numerically. It explores the Hawking spectra calculation using the confluent Heun equation for a 2D Reissner-Nordstrom-like solution, and considers the quasinormal modes of the dimensionally reduced BTZ black hole. The dynamics near the Cauchy horizon suggest a potential violation of strong cosmic censorship conjecture in the near extreme limit, although quantum effects may play a role in preserving it.
Article
Astronomy & Astrophysics
Rohan R. Poojary
Summary: We study the near extremal thermodynamics of Banados-Teitelboim-Zanelli (BTZ) gravity theory with excess mass delta M and excess angular momentum delta J = L delta M. We find that the Jackiw-Teitelboim theory can capture such departures from extremality by parametrizing the BTZ geometry with an additional parameter L.
Article
Astronomy & Astrophysics
Ruben Campos Delgado, Stefan Foerste
Summary: We study N = 2 supersymmetric Jackiw-Teitelboim (JT) gravity coupled to matter at finite temperature. The matter fields are related to superconformal primaries through AdS/CFT duality. Corrections to superconformal correlators arise due to broken super reparametrisation invariance in the SCFT dual. These corrections are generated by the exchange of super-Schwarzian modes, which dual to the exchange of 2D supergravity modes. We compute corrections to four-point functions of superconformal primaries and analyze the behavior of out-of-time-ordered correlators. The Lyapunov exponents of different components in the corresponding supermultiplet depend on whether the corrections are due to graviton, gravitini, or graviphoton exchange. If mutual two-point functions are non-zero, all components experience maximal Lyapunov exponent growth.
Article
Astronomy & Astrophysics
Clifford Johnson, Felipe Rosso, Andrew Svesko
Summary: The study focuses on a JT supergravity theory and demonstrates its connection to certain matrix models, offering a nonperturbative computation method. The theory is considered a combination of specific type 0B minimal string theories, and it is suggested that other JT supergravities may also be defined similarly.
Article
Physics, Particles & Fields
Andreas Blommaert, Thomas G. Mertens, Henri Verschelde
Summary: Recent research has shown that JT gravity can be defined as an ensemble of L x L Hermitian matrices, with eigenvalues corresponding to specific boundaries where spacetimes can end. Furthermore, a version of JT gravity with N boundaries included in the path integral contour has been found to emulate a discrete quantum chaotic system. This version of JT gravity is able to capture the behavior of finite-volume holographic correlators at late times, including erratic oscillations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Konstantin Alkalaev, Euihun Joung, Junggi Yoon
Summary: This paper introduces the colored version of Jackiw-Teitelboim (JT) gravity, which is a two-dimensional dilaton gravity model with matrix-valued fields. It is formulated using the BF action with su(N, N) gauge algebra, and embeds the standard JT gravity as a su(1, 1) subset of the su(N, N) sector.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Yale Fan, Thomas G. Mertens
Summary: This study presents the gauge theory formulation of N = 1 Jackiw-Teitelboim supergravity using the underlying OSp(1|2,R) supergroup, with a focus on boundary dynamics and gravitational amplitudes. By analyzing the holographic boundary, it is shown that the BF description reduces to super-Schwarzian quantum mechanics, and defects are classified in terms of monodromies of OSp(1|2,R) and interpreted through character insertions in the bulk.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Florian Ecker, Carlos Valcarcel, Dmitri Vassilevich
Summary: In this paper, holographic counterterms and asymptotic conditions are proposed for a family of asymptotically AdS(2) dilaton gravity models, leading to a consistent variational problem and a finite on-shell action. The presence of asymptotic Virasoro symmetries in all these models is shown, with the Schwarzian action generating part of the equations of motion governing the asymptotic degrees of freedom. The applicability of various entropy formulae is also analyzed, with the results extended to a larger class of models through a dilaton-dependent conformal transformation.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Cheng-Yuan Lu, Ming-Hui Yu, Xian-Hui Ge, Li-Jun Tian
Summary: We study the behavior of the Page curve and the island paradigm for a deformed Jackiw-Teitelboim black hole with the presence of a phase transition. The black hole exhibits a van der Waals-Maxwell-like phase structure due to its coupling with a Maxwell field. We investigate different situations with different charges in the fixed charge ensemble, which affect the system's phase structure. The Page curve exists only in the presence of charges, with a van der Waals-Maxwell-like phase transition resulting in three black hole solutions.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Sergei Gukov, Vincent S. H. Lee, Kathryn M. Zurek
Summary: We study quantum fluctuations in the light-cone metric of the 4D Einstein-Hilbert action using dimensional reduction to Jackiw-Teitelboim (JT) gravity. We show that in Einstein gravity, the causal development of a region in flat Minkowski spacetime near a horizon defined by light sheets can be described by a two-dimensional dilaton theory. By relating the quantum uncertainty of horizon's spacetime position to the original 4D light-cone coordinates, we compute the uncertainty in the travel time of a photon through a causal diamond in flat 4D Minkowski space. The fluctuation in arrival time is potentially large due to both Planck and infrared scales.
Article
Astronomy & Astrophysics
Mohsen Alishahiha
Article
Physics, Particles & Fields
Mohsen Alishahiha, M. Reza Mohammadi Mozaffar, Mohammad Reza Tanhayi
JOURNAL OF HIGH ENERGY PHYSICS
(2015)
Article
Physics, Particles & Fields
Mohsen Alishahiha, Amin Faraji Astaneh, Piermarco Fonda, Farzad Omidi
JOURNAL OF HIGH ENERGY PHYSICS
(2015)
Article
Physics, Particles & Fields
Mohsen Alishahiha, Ali Davody, Ali Naseh, Seyed Farid Taghavi
JOURNAL OF HIGH ENERGY PHYSICS
(2016)
Article
Physics, Particles & Fields
A. Akhavan, M. Alishahiha, A. Naseh, A. Nemati, A. Shirzad
JOURNAL OF HIGH ENERGY PHYSICS
(2016)
Article
Physics, Particles & Fields
Mohsen Alishahiha, Mohammad M. Qaemmaqami, Ali Naseh, Ahmad Shirzad
JOURNAL OF HIGH ENERGY PHYSICS
(2016)
Article
Physics, Particles & Fields
Mohsen Alishahiha, Amin Faraji Astaneh, Ali Naseh, Mohammad Hassan Vahidinia
JOURNAL OF HIGH ENERGY PHYSICS
(2017)
Article
Physics, Particles & Fields
Mohsen Alishahiha, Amin Faraji Astaneh, M. Reza Mohammadi Mozaffar, Ali Mollabashi
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Astronomy & Astrophysics
Mohsen Alishahiha, Amin Faraji Astaneh, M. Reza Mohammadi Mozaffar
Article
Physics, Particles & Fields
Mohsen Alishahiha, Mohammad M. Qaemmaqami, Ali Naseh, Ahmad Shirzad
JOURNAL OF HIGH ENERGY PHYSICS
(2014)
Article
Physics, Particles & Fields
Amin Akhavan, Mohsen Alishahiha, Ali Naseh, Hamed Zolfi
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Astronomy & Astrophysics
Mohsen Alishahiha, Souvik Banerjee, Joshua Kames-King, Emma Loos
Summary: In this paper, a new expression for Lloyd's bound is proposed to confine the complexity growth of charged black holes. The study revisits holographic complexity for charged black branes in the presence of a finite cutoff, finding a relation between the UV and behind the horizon cutoff which is consistent with factorization of the partition function at leading order in large N. The result is argued to be a holographic realization of strong cosmic censorship.
Article
Astronomy & Astrophysics
Mohsen Alishahiha, Komeil Babaei Velni, M. Reza Mohammadi Mozaffar
Article
Astronomy & Astrophysics
Mohsen Alishahiha, Amin Faraji Astaneh