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Is the evaporation of a black hole described by a unitary theory? In order to shed light on this question ---especially aspects of this question such as a black hole's negative specific heat---we consider the real-time dynamics of a…

High Energy Physics - Theory · Physics 2019-01-16 Evan Berkowitz , Masanori Hanada , Jonathan Maltz

We study a planar bubble wall that is traveling at an ultrarelativistic speed through a thermal plasma. This situation may arise during a first-order electroweak phase transition in the early universe. As particles cross the wall, it is…

High Energy Physics - Phenomenology · Physics 2024-11-05 Andrew J. Long , Jessica Turner

We present 3D numerical simulations of the early evolution of long-duration gamma-ray bursts in the collapsar scenario. Starting from the core-collapse of a realistic progenitor model, we follow the formation and evolution of a central…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Paul A. Taylor , John C. Miller , Philipp Podsiadlowski

Based on previous works, in this article we systematically analyze the implications of the explicit normal modes of a probe scalar sector in a BTZ background with a Dirichlet wall, in an asymptotically AdS-background. This is a…

High Energy Physics - Theory · Physics 2025-01-22 Souvik Banerjee , Suman Das , Arnab Kundu , Michael Sittinger

Thermalization is the dynamical process by which a many-body system evolves toward a thermal equilibrium state that maximizes its entropy. In certain cases, however, the establishment of thermal equilibrium is significantly slowed down and…

Quantum Gases · Physics 2022-09-07 Murad Abuzarli , Nicolas Cherroret , Tom Bienaimé , Quentin Glorieux

We use the non-Abelian DBI action to study the dynamics of $N$ coincident $Dp$-branes in an arbitrary curved background, with the presence of a homogenous world-volume electric field. The solutions are natural extensions of those without…

High Energy Physics - Theory · Physics 2010-02-03 Steven Thomas , John Ward

We show that magnetic reconnection in a magnetically-dominated fast-cooling plasma can naturally produce bright flares accompanied by rotations in the synchrotron polarization vector. With particle-in-cell simulations of reconnection, we…

High Energy Astrophysical Phenomena · Physics 2020-07-30 David N. Hosking , Lorenzo Sironi

In this paper we use the effective blackfold description of branes to extend the study of the thermal BIon, a D-brane and parallel anti-D-brane connected by a wormhole with F-string charge in hot flat space, by introducing a radial boost…

High Energy Physics - Theory · Physics 2017-12-06 Gianluca Grignani , Troels Harmark , Callum Kift , Andrea Marini , Marta Orselli

To achieve an understanding of the thermalization of a quark-gluon plasma, starting from QCD without using model assumptions, is a formidable task. We study the early stage dynamics of a relativistic heavy ion collision in the framework of…

High Energy Physics - Phenomenology · Physics 2016-05-31 Maximilian Attems , Owe Philipsen , Christian Schäfer , Björn Wagenbach , Savvas Zafeiropoulos

Using black brane solutions in 5d Lifshitz-like backgrounds with arbitrary dynamical exponent $\nu$, we construct the Vaidya geometry, asymptoting to the Lifshitz-like spacetime, which represents a thin shell infalling at the speed of…

High Energy Physics - Theory · Physics 2016-10-25 Irina Ya. Aref'eva , Anastasia A. Golubtsova , Eric Gourgoulhon

We use quantum scattering theory to study a fixed quantum system Y subject to collisions with massive particles X described by wave-packets. We derive the scattering map for system Y and show that the induced evolution crucially depends on…

Quantum Physics · Physics 2021-05-05 Samuel L. Jacob , Massimiliano Esposito , Juan M. R. Parrondo , Felipe Barra

We regularise the 3d \lambda \phi^4 model by discretising the Euclidean time and representing the spatial part on a fuzzy sphere. The latter involves a truncated expansion of the field in spherical harmonics. This yields a numerically…

High Energy Physics - Theory · Physics 2009-12-15 Julieta Medina , Wolfgang Bietenholz , Denjoe O'Connor

We discuss the phenomenon of spontaneous self-compactification in a model colloidal system, proposed in a recent work on DNA-mediated self-assembly. We focus on the effect of thermal fluctuations on the stability of membrane-like…

Soft Condensed Matter · Physics 2007-05-23 Juyong Park , Alexei V. Tkachenko

We study, in the framework of open quantum systems, the dynamics of a radially polarizable two-level atom in multi-polar coupling to fluctuating vacuum electromagnetic fields which is placed at a fixed radial distance outside a radiating…

General Relativity and Quantum Cosmology · Physics 2013-10-30 Jiawei Hu , Wenting Zhou , Hongwei Yu

We demonstrate the existence of a pair of almost dissipationless oscillating modes at low temperatures in both the shear and sound channels of a hybrid quantum system, comprised of a weakly self-interacting perturbative sector coupled to…

High Energy Physics - Theory · Physics 2026-05-19 Toshali Mitra , Sukrut Mondkar , Ayan Mukhopadhyay , Alexander Soloviev

Dynamical evolution of thin shells composed by different kinds of degrees of freedom collapsing within asymptotically AdS spaces is explored with the aim of investigating models of holographic thermalization of strongly coupled systems.…

High Energy Physics - Theory · Physics 2013-04-09 Walter H. Baron , Damian Galante , Martin Schvellinger

We study, in general terms, the process by which a pure state can ``self-thermalize'' and {\em appear} to be described by a microcanonical density matrix. This requires a quantum mechanical version of the Gibbsian coarse graining that…

Statistical Mechanics · Physics 2009-11-07 N. D. Hari Dass , S. Kalyana Rama , B. Sathiapalan

We propose a modified version of the Horowitz-Maldacena final-state boundary condition based upon a matter-radiation thermalization hypothesis on the Black Hole interior, which translates into a particular entangled state with thermal…

High Energy Physics - Theory · Physics 2008-11-26 A. Fabbri , A. Perez

We investigate black hole formation by a spherically collapsing thin shell of matter in AdS space. This process has been suggested to have a holographic interpretation as thermalization of the CFT on the boundary of the AdS space. The…

High Energy Physics - Theory · Physics 2009-10-31 Ulf H. Danielsson , Esko Keski-Vakkuri , Martin Kruczenski

We perform a unique direct numerical simulation of Euler turbulence using delta-correlated velocity field as an initial condition, and report a full range of $k^2$ and $k$ energy spectra for 3D and 2D flows respectively, zero energy flux,…

Fluid Dynamics · Physics 2020-04-21 Mahendra K. Verma , Shashwat Bhattacharya , Soumyadeep Chatterjee