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The radiative heat transfer in the extreme near-field regime, i.e. for distances below 10 nm, remains poorly understood. There are competing experimental results in this regime, with some in good agreement with theoretical predictions,…

Mesoscale and Nanoscale Physics · Physics 2025-05-06 Fridolin Geesmann , Philipp Thurau , Sophie Rodehutskors , Till Ziehm , Ludwig Worbes , Svend-Age Biehs , Achim Kittel

Many natural systems undergo critical transitions, i.e. sudden shifts from one dynamical regime to another. In the climate system, the atmospheric boundary layer can experience sudden transitions between fully turbulent states and…

Atmospheric and Oceanic Physics · Physics 2020-08-26 Amandine Kaiser , Davide Faranda , Sebastian Krumscheid , Danijel Belušić , Nikki Vercauteren

Based on the fundamental Bogolyubov chain of equations, a model relating the structural and thermophysical properties of the nonequilibrium liquid systems under irradiation in stationary state is introduced. The obtained results suggest…

Statistical Mechanics · Physics 2016-03-28 L. A. Bulavin , K. V. Cherevko , D. A. Gavryushenko , V. M. Sysoev , T. S. Vlasenko

Optical internal transitions relevant to ODR experiments are computed for the biexciton in a quantum dot in the strong confinement regime. Valence sub-band mixing effects are taken into account in second order pertubation theory. The…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Ricardo Perez , Augusto Gonzalez

We present exact diagonalization results on a modified Peierls-Hubbard model for the neutral-ionic phase transition. The ground state potential energy surface and the infrared intensity of the Peierls mode point to a strong, non-linear…

Strongly Correlated Electrons · Physics 2016-08-31 Luca Del Freo , Anna Painelli , Zoltan G. Soos

We propose a new method of detecting radiation reaction effects in the motion of particles subjected to laser pulses of moderate intensity and long duration. The effect becomes sizeable for particles that gain almost no energy through the…

The effect of scattering processes in the continuum on the formation of spectral lines in a static atmosphere with an arbitrary distribution of the internal energy sources is investigated using Ambartsumian's principle of invariance.…

Astrophysics · Physics 2009-10-31 G. Israelian

Active systems are inherently out of equilibrium, as they collect energy from their surroundings and transform it into directed motion. A recent theoretical study suggests that binary mixtures of active particles with distinct effective…

Soft Condensed Matter · Physics 2017-11-22 Sunita Kumari , Andre S. Nunes , Nuno A. M. Araujo , Margarida Telo da Gama

We present results of molecular dynamics simulations of the electron system on the surface of liquid helium. The simulations are done for 1600 electrons with periodic boundary conditions. Electron scattering by capillary waves and phonons…

Mesoscale and Nanoscale Physics · Physics 2018-09-03 K. Moskovtsev amd M. I. Dykman

The radiation from a relativistic charged particle uniformly moving through the centre of a dielectric ball is investigated. Analytical expressions for spectral and spectral-angular distributions of the radiated energy are derived and…

Classical Physics · Physics 2015-05-28 Svetlana R. Arzumanyan

We demonstrate that thermoelectric signal as well as dc Josephson current may be severely enhanced in multi-terminal superconducting hybrid nanostructures exposed to a temperature gradient. At temperatures $T$ strongly exceeding the…

Mesoscale and Nanoscale Physics · Physics 2020-05-13 Mikhail S. Kalenkov , Pavel E. Dolgirev , Andrei D. Zaikin

We reveal a wealth of nonlinear and recoil effects in the interaction between individual low-energy electrons and samples comprising a discrete number of states. Adopting a quantum theoretical description of combined free-electron and…

Quantum Physics · Physics 2022-09-12 F. Javier García de Abajo , Eduardo J. C. Dias , Valerio Di Giulio

Resonant nonlinear-optical interference processes in four-level Doppler-broadened media are studied. Specific features of amplification and optical switching of short-wavelength radiation in a strongly-absorbing resonant gas under coherent…

Optics · Physics 2015-06-26 A. K. Popov , S. A. Myslivets , Thomas F. George

Our recent arXiv preprints have described the experimental evidence for the universal occurrence of short circuit photocurrents on illumination of solid state surfaces by strongly absorbed light. A likely mechanism has been proposed based…

Materials Science · Physics 2008-05-02 Mladen Georgiev

In the past two decades, laser-accelerated ion sources and their applications have been intensely researched. Recently, it has been shown through experiments that proton beams with characteristics comparable to those obtained with solid…

Plasma Physics · Physics 2018-04-20 Dragos Tatomirescu , Daniel Vizman , Emmanuel d'Humières

Spiral waves emerge in numerous pattern forming systems and are commonly modeled with reaction-diffusion systems. Some systems used to model biological processes, such as ion-channel models, fall under the reaction-diffusion category and…

Dynamical Systems · Mathematics 2021-10-29 Stephanie Dodson , Bjorn Sandstede

We examine the long-time behaviour of A+B \to 0 reaction-diffusion systems with initially separated species A and B. All of our analysis is carried out for arbitrary (positive) values of the diffusion constant D_A of particles A and initial…

Statistical Mechanics · Physics 2015-06-25 Zbigniew Koza

We study here the small time dynamics of $N$ electrons on the circle with Coul;omb repulsive interaction and study the series for the velocities (initially zero). The main result is the estimates of the convergence radius from below. We…

Mathematical Physics · Physics 2012-03-09 V. A. Malyshev

On an example of the open nonlinear electrodynamic system - transverse non-homogeneous, isotropic, nonmagnetic, linearly polarized, nonlinear (a Kerr-like dielectric nonlinearity) dielectric layer, the algorithms of solution of the…

Computational Physics · Physics 2007-05-23 V. V. Yatsyk

Previously obtained expressions describing the intensity of stationary fluorescence emitted by a multicomponent solution were significantly improved by using matrix calculus. Then, using a similar technique, new expressions describing the…

Chemical Physics · Physics 2025-06-09 Józef Kuśba
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