Radiation and Dynamics of Nanoparticle in Equilibrium Background Radiation upon Translational-Rotational Motion

We have obtained general expressions for the intensity of radiation and tangential force of a small polarizable particle in the process of translational-rotational motion in equilibrium radiation background (thermalized photon gas) of certain temperature at an arbitrary relative orientation of the linear and angular velocity vectors. It is shown that in cold vacuum background the translational velocity of particle is independent of time and the intensity of its spontaneous emission is determined by the angular velocity and imaginary part of the polarizability.Comment: 7 pages, 1 figur

Features of the configurations "small particle -plate" and "plate -plate" in the theory of fluctuation electromagnetic interaction

It is shown that the limiting transition from the geometrical configuration "plate -plate" to configuration "small particle -plate" being frequently used in the theory of Lifshitz -Pitaevskii, is not continually true. On the other hand, the known solution to the problem in the last configuration can be used to verify the generalizations of the theory being worked out in the former configuration.Comment: 7 pages, 1 figur

On Cherenkov Friction and Radiation of a Neutral Polarizable Particle Moving Parallel to a Transparent Dielectric Plate

We have obtained general expressions for the intensity of radiation, decelerating force, the rate of heating and acceleration of a small polarizable particle under the conditions of Cherenkov friction: at relativistic motion parallel to the surface of thick transparent dielectric plate. Comparison with the results of other authors is given.Comment: 7 pages, 1 figur

Dynamic van der Waals Interaction of a Moving Atom with the Walls of a Flat Slit

A general expression was obtained for the dynamic energy of the van der Waals interaction of a neutral atom with a flat slit whose walls are characterized by a frequency-dependent dielectric permittivity. The interaction of cesium atoms with the walls of metallic (Au) and dielectric (SiC) slits id analyzed numerically at speeds of 1 E04 to 10 E07 m/s. As the speed of atoms grows, the dynamic potentials near the walls become substantially smaller in magnitude than static potentials, but, in the intermediate region, the former exceed the latter by a factor of 1.5-2.0 m/s in a specific range of speeds.Comment: 5 pages, 3 figure

Fluctuation Electromagnetic Interaction Between Rotating Nanoparticle and Near-Field of the Surface

Fluctuation electromagnetic interaction between a small rotating particle and a polarizable surface produces the friction torque on the particle, changes the attraction force (van -der -Waals force) and the rate of heat exchange in this system. In this paper we consider the case where the rotation axis is parallel to the surface. We present general theoretical basis allowing to obtain characteristics of the interaction at an arbitrary orientation of the rotation axis. In comparison to the case where the rotation axis is perpendicular to the surface (arXiv: 1208.2603), the obtained integral expressions for the friction torque, interaction energy and heating rate have different numerical coefficients. Numerical estimations are given in the case Au (particle)- Au(surface) and SiC (particle)-SiC (surface).Comment: 16 pages,4 figure

A uniformly moving polarizable particle in a thermal radiation field with arbitrary spin direction

We have generalized our recent results (Arm. J. Phys., 2014) relating to the dynamics, heating and radiation of a small rotating polarizable particle moving in a thermal radiation field in the case of arbitrary spin orientation. General expressions for the tangential force, heating rate and intensity of thermal and nonthermal radiation are given. It is shown that the intensity of nonthermal radiation does not depend on the linear velocity and spin direction of the particle.Comment: 6 pages, 1 figur

Fluctuation-Electromagnetic Interaction: Effects of Uniform Motion, Rotation, and Thermal Disequilibrium

In this work, we give a consistent review of recent analytical results of reference character related to the fluctuation-electromagnetic interactions in the systems particle-vacuum, particle-surface, particle-particle, and surface-surface. Effects of dynamical, rotational, and thermal disequilibrium are considered. The applications of these results are important in atomic and molecular physics, quantum field theory and nanotechnology.Comment: 21 pages, 5 figure

Radiation of a neutral polarizable particle moving uniformly through a thermal radiation field

We discuss the properties of thermal electromagnetic radiation produced by a neutral polarizable nanoparticle moving with an arbitrary relativistic velocity in a heated vacuum background with a fixed temperature. We show that the particle in its own rest frame acquires the radiation temperature of vacuum, multiplied by a velocity-dependent factor, and then emits thermal photons predominantly in the forward direction. The intensity of radiation proves to be much higher than for the particle at rest. For metal particles with high energy, the ratio of emitted and absorbed radiation power is proportional to the Lorentz-factor squared.Comment: 17 pages, 7 figures; revised version submitted to Phys. Script

On the Casimir-Lifshitz Force in a System of Two Parallel Plates in Relative Nonrelativistic Motion

In this paper we correct a previously obtained expression for the Casimir-Lifshitz attraction force (Dedkov, Kyasov, Surf. Sci., 2010) in a system of two parallel plates in relative nonrelativistic motion, assuming the total thermal equilibrium of the system.Comment: 4 pages, 1 figur

Fluctuation electromagnetic conservative -dissipative interaction and heating of two closely spaced parallel plates in relative motion. Nonrelativistic approximation.1

For the first time, we calculate the heating rate, attractive conservative and tangential dissipative fluctuation electromagnetic forces felt by a thick plate moving parallel to a closely spaced another plate in rest using a nonrelativistic approximation of fluctuation electrodynamics. These results can be considered as the high lights when solving general relativistic problem of the fluctuation electromagnetic interaction in configuration of two perfectly smooth parallel thick plates in relative motion.Comment: 14 pages, 2 figure