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
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
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
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
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
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: 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
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)
Article
Physics, Particles & Fields
A. Chandranathan, Sayantani Bhattacharyya, Milan Patra, Shuvayu Roy
Summary: In this note, the construction of an entropy current on the horizons of dynamical black hole solution within the approximation of small amplitude expansion has been discussed. It has been dualized to a boundary entropy current in an asymptotically AdS black hole metric with a dual description in terms of dynamical fluids living on the AdS boundary. The construction involves mapping functions relating points on the horizon to points on the boundary. The study has focused on black holes in Einstein-Gauss-Bonnet theory and revealed that Gauss-Bonnet terms do not affect fluid entropy up to first order in derivative expansion, but at second order, the boundary current depends on the choice of horizon to boundary map.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Hans Bantilan, Yago Bea, Pau Figueras
Summary: Motivated by the physics of quark-gluon plasma in heavy-ion collision experiments, this study uses holography to investigate the applicability of various relativistic viscous hydrodynamics theories. By performing real-time evolutions using different initial data and parameters, the predictive power and accuracy of each theory are assessed.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Raimon Luna, Mikel Sanchez-Garitaonandia
Summary: In this study, collisions of Gaussian mass-density blobs in a holographic plasma are investigated using a large D effective theory as a model for holographic shockwave collisions. The first 4+1 collisions in Einstein-Maxwell theory, which correspond to collisions of matter with non-zero baryonic number, are successfully simulated using the simplicity of the effective theory. Several collision scenarios with different blob shapes, impact parameters, and charge values are explored, revealing that collisions with impact parameter below the transverse width of the blobs are equivalent under rescaling. The weak effect of charge on other quantities is also observed. The generation of entropy during collisions is studied, considering both charge diffusion and viscous dissipation, and multiple stages of linear entropy growth are identified, with rates dependent on the initial conditions.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Piyabut Burikham, Krai Cheamsawat, Tiberiu Harko, Matthew J. Lake
EUROPEAN PHYSICAL JOURNAL C
(2016)
Article
Physics, Nuclear
Piyabut Burikham, Rujikorn Dhanawittayapol, Taum Wuthicharn
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2016)
Article
Physics, Particles & Fields
Piyabut Burikham, Tiberiu Harko, Matthew J. Lake
EUROPEAN PHYSICAL JOURNAL C
(2017)
Article
Physics, Particles & Fields
Christian G. Bohmer, Piyabut Burikham, Tiberiu Harko, Matthew J. Lake
EUROPEAN PHYSICAL JOURNAL C
(2018)
Article
Physics, Particles & Fields
Supakchai Ponglertsakul, Piyabut Burikham, Lunchakorn Tannukij
EUROPEAN PHYSICAL JOURNAL C
(2018)
Article
Physics, Particles & Fields
Parinya Kareeso, Piyabut Burikham, Tiberiu Harko
EUROPEAN PHYSICAL JOURNAL C
(2018)
Article
Physics, Particles & Fields
Piyabut Burikham, Daris Samart
EUROPEAN PHYSICAL JOURNAL C
(2019)
Article
Physics, Particles & Fields
Trithos Rojjanason, Piyabut Burikbam, Kulapant Pimsamarn
EUROPEAN PHYSICAL JOURNAL C
(2019)
Article
Astronomy & Astrophysics
Taum Wuthicharn, Supakchai Ponglertsakul, Piyabut Burikham
Summary: Two numerical methods, AIM and the Spectral Method, are used in this paper to calculate QNMs of near-extremal black holes/strings in a generalized spherically/cylindrically symmetric background. The accuracy of the approximate analytic formula using the Poschl-Teller potential is confirmed by the numerical results. Our analytic formula is then applied to investigate the Strong Cosmic Censorship conjecture of extremal and near-extremal black holes.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2022)
Article
Astronomy & Astrophysics
Supakchai Ponglertsakul, Piyabut Burikham, Sitthichai Pinkanjanarod
Summary: The quadrupole normal mode oscillation frequency fn of multiquark stars is calculated for n = 1-5. The transition from low to high density multiquark in the core region results in a jump in the first two modes, indicating the presence of a high-density core. When the star's oscillation couples with spacetime, gravitational waves (GW) are generated and the star undergoes damped oscillation. The computation of quasinormal modes (QNMs) using two methods, direct scan and WKB, reveals small imaginary QNMs with frequencies of 1.5-2.6 kHz and damping times of 0.19-1.7 secs, as well as large imaginary QNMs with frequencies of 5.98-9.81 kHz and damping times of 0.13-0.46 ms.
Article
Astronomy & Astrophysics
Muhammad F. A. R. Sakti, Piyabut Burikham
Summary: We provide strong evidence for entropy matching that rotating dyonic black holes in the Einstein-Maxwell-Dilaton-Axion theory are holographically dual to a 2D conformal field theory (CFT). We demonstrate the duality on a dyonic Kerr-Sen black hole with nonvanishing dilaton and axion charges, finding exact agreement between the Bekenstein-Hawking entropy and entropy from CFT in different branches of extremal entropy. We also show that this duality holds for both dyonic Kerr-Sen-AdS black holes and their ultraspinning counterparts.
Article
Astronomy & Astrophysics
Piyabut Burikham, Sitthichai Pinkanjanarod, Supakchai Ponglertsakul
Summary: This paper computes the moment of inertia, rotational Love number, and quadrupole moment of slowly rotating massive neutron stars with holographic multiquarks core and compares them with pure multiquark stars. The results show that the dimensionless multipole moments are independent of rotation parameters and determined by the zeroth-order star profile. Universal relations between moment of inertia, rotational Love number, quadrupole moment, and tidal deformation parameter are verified. The existence of massive neutron stars with a multiquark core can be revealed by the unique kink in the plots of multipole moments.
Article
Astronomy & Astrophysics
Supakchai Ponglertsakul, Takol Tangphati, Piyabut Burikham
Article
Astronomy & Astrophysics
Piyabut Burikham, Supakchai Ponglertsakul, Lunchakorn Tannukij
Article
Astronomy & Astrophysics
Sirachak Panpanich, Piyabut Burikham