Article
Physics, Particles & Fields
Sunly Khimphun, Bum-Hoon Lee, Gansukh Tumurtushaa
Summary: This study investigates four-dimensional cosmological models on the boundary of a five-dimensional Anti-de Sitter black hole, deriving modified Friedmann equations and discussing cosmological implications using Eddington-Finkelstein coordinates and AdS/CFT correspondence. The research analyzes the late-time acceleration of the universe, treating contributions from the bulk side as dark energy source, and conducting MCMC analyses with observational data, showing that the models can explain observational data as reliable as the ACDM model.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Lei Yin, Defu Hou, Hai-cang Ren
Summary: The study shows that the chiral magnetic effect with a fluctuating chiral imbalance is more realistic in the evolution of quark-gluon plasma, helping to understand related phenomena. By investigating the AVV function, it is revealed that the dependence of this function on a non-constant chiral imbalance is non-local, which differs from conventional approaches.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Umut Gursoy, Matti Jarvinen, Govert Nijs, Juan F. Pedraza
Summary: The study investigates the combined effects of anisotropy and a magnetic field in strongly interacting gauge theories using the gauge/gravity correspondence. It focuses on the interplay and competition between anisotropy and magnetic field, revealing a rich structure in the phase transitions at finite temperature. Various observables in the theory, such as the quark-antiquark potential, shear viscosity, entanglement entropy, and butterfly velocity are explored, showing their effectiveness as probes for distinguishing between magnetic field and anisotropy effects in the plasma states.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
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
Casey Cartwright
Summary: This study reports on the time evolution of a charged N = 4 SYM plasma with an axial anomaly under strong electromagnetic fields, exploring the changes in axial current and axial charges. The study also shows that after a sufficiently long time, both the entropy and holographic entanglement entropy of a strip-like topology will grow linearly with time.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sebastian Grieninger, Ashish Shukla
Summary: This study calculates all seven T-invariant second-order susceptibilities of the N = 4 supersymmetric SU(N-c) Yang-Mills plasma in thermal equilibrium using the gauge/gravity duality and Kubo formulas, providing both analytic and numerical results. The dual gravitational description for the charged plasma in thermal equilibrium without background electric and magnetic fields is determined using the asymptotically AdS(5) Reissner-Nordstrom black brane geometry, with susceptibilities extracted by studying perturbations to the bulk geometry and bulk gauge field. An estimate of the second-order transport coefficient kappa, which determines the response of the fluid to the presence of background curvature, is also presented for QCD and compared with previous determinations using different techniques.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Irina Ya Aref'eva, Kristina Rannu, Pavel Slepov
Summary: In this study, a five-dimensional fully anisotropic holographic model supported by Einstein-dilaton-three-Maxwell action is presented, where three Maxwell fields provide chemical potential, spacial anisotropy, and are related to an external magnetic field. The influence of the external magnetic field on the 5-dim black hole solution and the confinement/deconfinement phase diagram, reconstructing the phase transition curves for heavy quarks, is considered, revealing the effect of inverse magnetic catalyses and identifying the positions of critical end points.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Irina Ya. Aref'eva, Kristina Rannu, Pavel Slepov
Summary: This paper introduces a five-dimensional anisotropic holographic model for light quarks, featuring a Van der Waals-like phase transition between small and large black holes. The study compares the locations of phase transitions for Wilson loops and background instability, while describing the QCD phase diagram in the T-μ plane. Additionally, the behavior of the Cornell potential in this anisotropic model is investigated, showing a strong dependence on anisotropy and orientation parameters.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sara Tahery, Xurong Chen, Zi-qiang Zhang
Summary: By using gauge/gravity duality, we studied the real and imaginary parts of the potential for a moving heavy quark antiquark pair in a quark gluon plasma. The complex potential was derived from the thermal fluctuations of the Nambu-Goto holographic string. In both transverse and parallel cases, the inclusion of gluon condensate increases the dissociation length for the real part, while for the imaginary part it generates a larger distance for quarkonium dissociation. However, at high temperatures, the imaginary part is nearly not modified by the gluon condensate.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Chao Wu, Yanqi Wang
Summary: In this work, we derive all the 7 dynamical second-order transport coefficients for the relativistic fluids dual to compactified AdS black holes of various dimensions via fluid/gravity correspondence. Through this work, we achieve three main goals: proving the type of gravitational backgrounds that can be used to extract analytical results for second-order transport coefficients, generalizing the results in previous studies on the second-order transport coefficients, and offering a thorough study on the proposed Kanitscheider-Skenderis model and its physical explanations.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Georg Maier, Andreas Schaefer, Sebastian Waeber
Summary: The relationship between entropy growth rate and quantum Lyapunov exponents in chaotic systems has been explored, with implications on the saturation of an upper bound on average entropy growth. The behavior of quantum systems under certain conditions may resemble that of classical chaotic systems, supporting the validity of the conjectured bound on entropy growth.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Jinwei Chu, Feiyu Deng, Yang Zhou
Summary: The study defines defect extremal surface by minimizing the Ryu-Takayanagi surface corrected by the quantum theory localized on the defect, and extends the results to higher dimensions. It is found that the entropy computed from bulk defect extremal surface is generally less than that from island formula in boundary low energy effective theory, suggesting a smaller entropy from the UV completion of island formula.
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
Xun Chen, Lin Zhang, Danning Li, Defu Hou, Mei Huang
Summary: The study investigated the rotating effect on the deconfinement phase transition and found that thermodynamic quantities are enhanced by large angular velocity. The phase transition for the two-flavor system is always a crossover in the T-omega plane, while the phase transition for the pure gluon system depends on the chemical potential and angular velocity.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)