Article
Physics, Particles & Fields
Aristomenis Donos, Christiana Pantelidou, Vaios Ziogas
Summary: In this study, holography was utilized to derive effective theories of fluctuations in spontaneously broken phases, with a focus on systems with finite temperature, chemical potential, magnetic field, and momentum relaxation where translations are broken. The hydrodynamic modes corresponding to coupled thermoelectric and density wave fluctuations were analytically constructed, revealing them to be purely diffusive in the system. Introduction of pinning for density waves resulted in some modes acquiring not only a gap, but also a finite resonance due to the presence of a magnetic field. Optical properties were studied and numerical checks of the analytical results were performed. An important outcome of the analysis was the identification of the correct current responsible for heat transport in the system.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Carlo Ewerz, Andreas Samberg, Paul Wittmer
Summary: In this study, holography was utilized to investigate the dynamics of a vortex-anti-vortex dipole in a strongly coupled superfluid in 2+1 dimensions. Numerical real-time simulations were used to track the evolution of vortices as they approached and annihilated each other. Universal trajectories of vortices were identified, while non-universal effects were attributed to numerical artifacts in vortex initialization. Additionally, the dependence of dynamics on superfluid temperature was explored.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Javier Mas, David Travieso Mayo
Summary: This article revisits the case of a real scalar field in global AdS4 under periodic driving. The authors address the issue of adiabatic preparation and deformation of a time-periodic solution corresponding to a Floquet condensate. They carefully study the case of driving close to the normal mode resonant frequencies and examine different slow protocols. The results show that traversing a normal mode frequency has different consequences depending on the sense of the frequency modulation.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
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
Wen-Bin Pan, Ya-Wen Sun
Summary: This paper investigates the method of generating topologically nontrivial gapless hydrodynamic modes in holographic systems and compares it with the approach used in relativistic hydrodynamics. The study is also extended to the case with one extra U(1) current, revealing the possibility of more complex topological phase diagrams.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Jeong-Won Seo, Taewon Yuk, Young-Kwon Han, Sang-Jin Sin
Summary: In this study, a model with a flat band over a finite region of momentum space is proposed using a bulk interaction term instead of a boundary term. The spectrum of the model is found to be precisely analogous to that of the ABC stacked multilayer graphene. Furthermore, the flat band in the holographic model is bent in the presence of the chemical potential, resembling the band deformation due to spin-orbit interaction.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Zhi Wang, Zekun Xu, Shuyan Zhou, Yang Zhou
Summary: This study investigates the AdS region using the partial reduction method, exploring the relationship between defect extremal surfaces and entropy in boundary CFT. It also demonstrates the existence of a 4-dimensional massless graviton on an AdS(4) brane under partial reduction.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Yu-Ni Yang, Chuan-Yin Xia, Zhang-Yu Nie, Hua-Bi Zeng
Summary: In this study, we investigate the competition between the p-wave and the p+ip superfluid solutions by applying magnetic field intensity H and back reaction parameter b. We find that the p+ip solution is significantly affected while the p-wave solution is only slightly affected when H is turned on. The H-T phase diagrams reveal a slit region of the p+ip phase, with the zero (or finite) value of H at the starting point of the slit region related to second (or first) order p-wave phase transition at zero magnetic intensity, which is expected to be universal in systems with degenerate critical points at zero magnetic field.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Ronnie Rodgers, Enea Mauri, Umut Gursoy, Henk T. C. Stoof
Summary: The study focuses on various thermodynamic and transport properties of a holographic model of a nodal line semimetal at finite temperature, including the quantum phase transition and the disappearance of nodal lines as temperature increases. By introducing a new nonlinear coupling, the low frequency limit of electrical conductivity can be controlled to better match the real NLSMs. The anisotropy of the boundary quantum field theory leads to explicitly broken Lorentz invariance, impacting the stress tensor and thermal conductivity.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Peng Yang, Xin Li, Yu Tian
Summary: The instability of superfluids in optical lattice was investigated using a holographic model. Numerical solutions for static and steady flow were obtained, and the instability was studied at both linear perturbation and fully nonlinear levels. The results showed a chaotic state with soliton generation before eventually settling into a stable state.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Debabrata Ghorai, Taewon Yuk, Sang-Jin Sin
Summary: In this study, we investigate the fermionic spectral function in p-wave holographic superconductors. We find that the vector model with minimal coupling exhibits a p-wave spectral function with Fermi arc, in contrast to previous studies where the p-wave arc was shown in the presence of a tensor field. We examine the momentum-dependent order parameter, the omega-gap in the real part of the conductivity, and the impact of coupling constants, temperature, and chemical potential on the spectral function.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Debabrata Ghorai, Yoon-Seok Choun, Sang-Jin Sin
Summary: In this paper, we reevaluate the angular dependence in gap structure of holographic superconductors and analyze the vector field model and scalar order model in detail. Some interesting conclusions are drawn, including the comparison of critical temperature between the two models.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Chong-Ye Chen, Wei Xiong, Chao Niu, Cheng-Yong Zhang, Peng Liu
Summary: In the study of holographic Aether gravity theory, it is found that the entanglement wedge cross-section (EWCS) exhibits rich non-monotonic behaviors, while the holographic entanglement entropy (HEE) and the corresponding mutual information (MI) only display monotonic behaviors. This suggests that the EWCS may capture more diverse entanglement content than the HEE and the MI, and the role of Lorentz violation in determining the behaviors of quantum information-related quantities is analyzed.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Zhi-Hong Li, Han-Qing Shi, Hai-Qing Zhang
Summary: We investigate the formation of topological defects during the dynamical phase transition in a ring using the AdS/CFT correspondence. The results show that the configurations of the order parameter phases and correlation functions vary with different boundary conditions.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Shuta Ishigaki, Shunichiro Kinoshita, Masataka Matsumoto
Summary: In this study, the dynamical stability of a holographic conductor with a constant current under an external electric field is analyzed. The focus is on the stability in the parameter region where the multivalued relation between the external electric field and the current occurs due to nonlinear conductivity. The analysis shows that the states in one branch with a low electric current can be dynamically unstable, and the perturbations around the unstable states can become stable with finite wavenumber, indicating the existence of inhomogeneous steady states with current filaments.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Subhash Mahapatra
EUROPEAN PHYSICAL JOURNAL C
(2018)
Article
Physics, Particles & Fields
Anshuman Dey, Pratim Roy, Tapobrata Sarkar
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Physics, Particles & Fields
David Dudal, Subhash Mahapatra
JOURNAL OF HIGH ENERGY PHYSICS
(2018)
Article
Physics, Particles & Fields
Subhash Mahapatra
JOURNAL OF HIGH ENERGY PHYSICS
(2019)
Article
Astronomy & Astrophysics
Hardik Bohra, David Dudal, Ali Hajiloud, Subhash Mahapatra
Article
Physics, Particles & Fields
Roberto Auzzi, Stefano Baiguera, Andrea Legramandi, Giuseppe Nardelli, Pratim Roy, Nicolo Zenoni
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Nuclear
D. Dudal, A. Hajilou, S. Mahapatra
Summary: This study extends previous work by introducing an Einstein-Maxwell-Dilaton (EMD) action with two quark flavours, solving the equations of motion in the quenched approximation using the potential reconstruction method in the presence of a background magnetic field. The research aims to find a self-consistent dual magnetic AdS/QCD model and discusses the deconfinement transition temperature, confirming inverse magnetic catalysis, and comparing entropy density with lattice data in the vicinity of the transition for moderate values of the magnetic field.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Physics, Particles & Fields
Pratim Roy
Summary: This paper investigates the entanglement properties of a simple non-local model with long-range interactions. It is shown that logarithmic negativity decays slower with distance in the presence of long-range interactions compared to short-range models. Furthermore, no revivals of logarithmic negativity are observed for long-range interactions in sudden quantum quench scenarios. The entanglement entropy is also studied and supports these findings.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Siddhi Swarupa Jena, Bhaskar Shukla, David Dudal, Subhash Mahapatra
Summary: We continue our study on a holographic QCD model with a magnetic field, focusing on the entropy of a quark-antiquark pair. We observe a magnetic field dependence in the decreasing entropy near deconfinement and in the entropy variation for growing interquark separation. The results provide evidence for inverse magnetic catalysis and suggest that the magnetic field can promote quarkonium dissociation.
Article
Astronomy & Astrophysics
Supragyan Priyadarshinee, Subhash Mahapatra, Indrani Banerjee
Summary: The paper presents and discusses a new family of topological hairy dyonic black hole solutions in asymptotically anti-de Sitter space. These solutions are regular and stable in various topologies, and can be obtained in both canonical and grand canonical ensembles. Moreover, electric and magnetic charges have a constructive effect on the stability of the hairy solutions.
Article
Astronomy & Astrophysics
Hardik Bohra, David Dudal, Ali Hajilou, Subhash Mahapatra
Summary: The study refines a previously introduced 5-dimensional gravity solution to better capture qualitative aspects of QCD in a strong magnetic background, such as anisotropic behavior of string tension and inverse catalysis at the deconfinement transition level. The researchers modified the solution to overcome previous limitations and bring the holographic QCD model closer to predicting magnetic QCD quantities not directly computable via lattice techniques.
Article
Astronomy & Astrophysics
Parul Jain, Subhash Mahapatra
Article
Physics, Particles & Fields
Subhash Mahapatra
EUROPEAN PHYSICAL JOURNAL C
(2020)