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Related papers: Absorption Lengths in the Holographic Plasma

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We gave an extensive study for the quasi-periodic perturbations on the time profiles of the line of sight (LOS) magnetic field in 10x10 sub-areas in a solar plage region (corresponds to a facula on the photosphere). The perturbations are…

Solar and Stellar Astrophysics · Physics 2022-04-20 Haisheng Ji , Parida Hashim , Zhenxiang Hong , Zhe Xu , Jinhua Shen , Kaifan Ji , Wenda Cao

The microscopic description of AdS space obeys the holographic principle in the sense that the number of microscopic degrees of freedom is given by the area of the holographic boundary. We assume the same applies to the microscopic…

High Energy Physics - Theory · Physics 2018-08-01 Sam van Leuven , Erik P. Verlinde , Manus R. Visser

We construct inhomogeneous asymptotically AdS black hole solutions corresponding to the spontaneous breaking of translational invariance and the formation of striped order in the boundary field theory. We find that the system undergoes a…

High Energy Physics - Theory · Physics 2013-05-22 Moshe Rozali , Darren Smyth , Evgeny Sorkin , Jared B. Stang

We study how the evaporation rate of spherically symmetric black holes is affected through the extraction of radiation close to the horizon. We adopt a model of extraction that involves a perfectly absorptive screen placed close to the…

High Energy Physics - Theory · Physics 2021-02-11 Krishan Saraswat , Niayesh Afshordi

2+1-dimensional Anti-deSitter gravity is quantized in the presence of an external scalar field. We find that the coupling between the scalar field and gravity is equivalently described by a perturbed conformal field theory at the boundary…

High Energy Physics - Theory · Physics 2009-10-31 Roberto Emparan , Ivo Sachs

We explore the far from equilibrium response of a holographic superfluid using the AdS/CFT correspondence. We establish the dynamical phase diagram corresponding to quantum quenches of the order parameter source field. We find three…

High Energy Physics - Theory · Physics 2015-06-05 M. J. Bhaseen , Jerome P. Gauntlett , B. D. Simons , Julian Sonner , Toby Wiseman

In collisions of heavy ions at extremely high energies, it is possible for a significant quantity of angular momentum to be deposited into the Quark-Gluon Plasma which is thought to be produced. We develop a simple geometric model of such a…

High Energy Physics - Theory · Physics 2012-04-18 Brett McInnes

We study the absorption of monochromatic electromagnetic plane waves impinging upon a Kerr black hole, in the general case that the direction of incidence is not aligned with the black hole spin axis. We present numerical results that are…

General Relativity and Quantum Cosmology · Physics 2018-08-01 Luiz C. S. Leite , Sam Dolan , Luís C. B. Crispino

Planar black holes in AdS have long-lived quasinormal modes which capture the physics of charge and momentum diffusion in the dual field theory. How should we characterize the effective dynamics of a probe system coupled to the conserved…

High Energy Physics - Theory · Physics 2021-06-02 Jewel K. Ghosh , R. Loganayagam , Siddharth G. Prabhu , Mukund Rangamani , Akhil Sivakumar , V. Vishal

The absorption cross section for the the warped AdS$_3$ black hole background shows that it is larger than the area even if the s-wave limit is considered. It raises some question whether the deviation from the areal cross section is due to…

High Energy Physics - Theory · Physics 2010-01-06 John J. Oh , Wontae Kim

We compute a certain class of corrections to (specific) screening lengths in strongly coupled nonabelian plasmas using the AdS/CFT correspondence. In this holographic framework, these corrections arise from various higher curvature…

High Energy Physics - Theory · Physics 2012-07-19 Ajay Singh , Aninda Sinha

Fluctuations around critical behavior of a holographic charged plasmas are investigated by studying quasi-normal modes of the corresponding black branes in 5D Einstein-Maxwell-Dilaton gravity. The near horizon geometry of black branes…

High Energy Physics - Theory · Physics 2022-06-22 Umut Gursoy , Matti Järvinen , Giuseppe Policastro , Natale Zinnato

Rotating small AdS black holes exhibit the superradiant instability to low-frequency scalar perturbations, which is amenable to a complete analytic description in four dimensions. In this paper, we extend this description to all higher…

High Energy Physics - Theory · Physics 2016-03-23 Alikram N. Aliev

In the previous paper we studied the transport coefficients of Quark-Gluon Plasma in finite temperature and finite density in vector and tensor modes. In this paper, we extend it to the scalar modes. We work out the decoupling problem and…

High Energy Physics - Theory · Physics 2009-08-03 Yoshinori Matsuo , Sang-Jin Sin , Shingo Takeuchi , Takuya Tsukioka , Chul-Moon Yoo

We reexamine some aspects of scattering by a Schwarzschild black hole in the framework of complex angular momentum techniques. More precisely, we consider, for massive scalar perturbations, the high-energy behavior of the resonance spectrum…

General Relativity and Quantum Cosmology · Physics 2011-10-24 Yves Décanini , Antoine Folacci , Bernard Raffaelli

This paper seeks to explore the holographic optical appearance of an AdS black hole with higher derivative corrections in the presence of a string cloud, drawing on the AdS/CFT correspondence and wave optics. We introduce a Gaussian wave…

High Energy Physics - Theory · Physics 2025-07-01 Abhishek Baruah , Bidyut Hazarika , Prabwal Phukon

We theoretically analyze dominant plasma modes in a two-dimensional disk of electron gas by calculating the absorption of an incident electromagnetic wave. The problem is solved in a self-consistent approximation, taking into account…

Mesoscale and Nanoscale Physics · Physics 2021-05-26 I. V. Zagorodnev , D. A. Rodionov , A. A. Zabolotnykh

The anti-de Sitter (AdS) black hole plays an important role in the holographic principle. In this study, the upper bound in energy corresponding to the mass of the Schwarzschild black hole is modified to be that of the AdS black hole. Via…

General Relativity and Quantum Cosmology · Physics 2022-11-18 Ratchaphat Nakarachinda , Chakrit Pongkitivanichkul , Daris Samart , Lunchakorn Tannukij , Pitayuth Wongjun

We report a detailed and systematic study of wave propagation through a stochastic absorbing random medium. Stochastic absorption is modeled by introducing an attenuation constant per unit length $\alpha$ in the free propagation region of…

Disordered Systems and Neural Networks · Physics 2007-05-23 Sandeep K. Joshi , Debendranath Sahoo , A. M. Jayannavar

We investigate the quasinormal modes of the Reissner$-$Nordstr\"om anti$-$de Sitter black hole using the Penrose limit, motivated by the geometrical optics approximation. This approach offers a novel framework for approximating quasinormal…

General Relativity and Quantum Cosmology · Physics 2025-03-21 Shubham Kala , Anik Rudra , Hemwati Nandan