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
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
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
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
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
Chao Wu, Yanqi Wang
Summary: This paper derives the 7 dynamical second order transport coefficients of nonconformal fluids corresponding to Dp-branes with one or more compactified world-volume directions via fluid/gravity correspondence. The derived coefficients satisfy the Haack-Yarom, Romatschke, and Kleinert-Probst relations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
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
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
Sebastian Waeber, Laurence G. Yaffe
Summary: We introduce a computational framework for efficiently calculating the collision of localized shocks in five dimensional asymptotically Anti-de Sitter space. By expanding the Einstein equations and decoupling them, we obtain numerical results that agree well with exact solutions at the first order. By simplifying the computation, the speed of obtaining useful numerical solutions can be increased by approximately one order of magnitude.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
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)
Article
Physics, Particles & Fields
Niko Jokela, Jose Manuel Penin, Konstantinos Christos S. Rigatos
Summary: This paper constructs gravity duals to supersymmetric gauge theories in the presence of unquenched flavor hypermultiplets. By considering the intersection of two sets of D3-branes in (1+1)-dimensional defect, the closed set of equations describing the dual geometry for a large number of colors and flavors in the Veneziano limit is derived. The solutions for massless flavors and the small flavor limit of massive hypermultiplets are briefly discussed. It is found that the 1/16-BPS supergravity solutions are generally asymptotically anti de-Sitter and the dilaton does not vary with the holographic radial coordinate, indicating the reliability of the classical Type IIB supergravity solutions for the gauge theories from the deep IR to the far UV.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Marti Berenguer, Ana Garbayo, Javier Mas, Alfonso V. Ramallo
Summary: The study continues the investigation of a strongly coupled (2+1)-dimensional gauge theory subject to an external rotating electric field. By adding temperature to the model and analyzing the phase diagram, researchers discovered new dual states named Floquet suppression points and observed the relationship between photovoltaic current and temperature.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Nuclear
Zhibin Li, Yidian Chen, Danning Li, Mei Huang
Article
Physics, Particles & Fields
Yidian Chen, Mei Huang, Qi-Shu Yan
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Astronomy & Astrophysics
Akira Watanabe, Mei Huang
Article
Physics, Nuclear
Xun Chen, Danning Li, Mei Huang
Article
Physics, Particles & Fields
Zhibin Li, Kun Xu, Xinyang Wang, Mei Huang
EUROPEAN PHYSICAL JOURNAL C
(2019)
Article
Physics, Nuclear
Yidian Chen, Xiao-Jun Bi, Mei Huang
Review
Physics, Multidisciplinary
Yidian Chen, Danning Li, Mei Huang
Summary: This paper presents a brief overview of the dynamical holographic QCD (DhQCD) method for studying hadron physics and QCD matter. The DhQCD model, constructed in a five-dimensional framework, allows for the simulation of gluodynamics and chiral dynamics. By solving the Einstein equation, the metric structure at infrared (IR) is deformed by nonperturbative gluon condensation and chiral condensation. The DhQCD model has been applied to study hadron spectra, QCD phase transitions, and thermodynamical and transport properties.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Physics, Particles & Fields
Yidian Chen, Danning Li, Mei Huang
Summary: We investigate the bounce solution in the holographic dark-QCD and electroweak models with first-order phase transition. The strength parameter ff, inverse duration time fi/H and bubble wall velocity vw in the gravitational wave power spectra are calculated by holographic bounce solution. We find that the phase transition is fast and strong, with a velocity vw less than the plasma sound speed c(s) = 1/√3. The gravitational wave signal from phase transitions is difficult to detect due to the suppression factor gamma. However, it can be detected during the electroweak phase transition with suitable parameters. Additionally, the formation of primordial black holes is not favorable due to the large parameter ss/H and small velocity vw.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Yidian Chen, Danning Li, Mei Huang
Summary: In this study, we investigate inhomogeneous chiral condensation under rotation considering finite size effects and boundary conditions in the holographic QCD model. We find that the effect of finite size on condensation depends on the boundary conditions, and the temperature and angular velocity significantly affect the phase diagrams of QCD.
Article
Astronomy & Astrophysics
Yidian Chen, Mei Huang
Summary: We have established a holographic QCD model for four flavors that incorporates a light scalar field X and a heavy scalar field H. The H field plays a role in breaking SU(N-f = 4) into SU(N-f = 3). The ground state and radial Regge excitations of meson spectra in both the light flavor and heavy flavor sectors, as well as the light-heavy mesons, are in good agreement with experimental data thanks to the introduction of the H field.
Article
Astronomy & Astrophysics
Lin Zhang, Chutian Chen, Yidian Chen, Mei Huang
Summary: The study focuses on the spectra of two-gluon glueballs and three-gluon oddballs in 5-dimensional deformed holographic QCD models, comparing the models based on dilaton field, deformed metric, and dilaton potential inputs. Results show that the models generally align with lattice results, with the quadratic dilaton field model accurately describing glueballs/oddballs spectra and the equation of state of the pure gluon system. The existence of a dual theory of pure gluodynamics is suggested, despite the ongoing challenge of finding a dual theory of full QCD.
Article
Astronomy & Astrophysics
Xinyang Wang, Minghua Wei, Zhibin Li, Mei Huang
Article
Materials Science, Multidisciplinary
Bin Qin, Defu Hou, Mei Huang, Danning Li, Hui Zhang
Article
Astronomy & Astrophysics
Hao Liu, Xinyang Wang, Lang Yu, Mei Huang