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In a granular gas of rough particles the axis of rotation is shown to be correlated with the translational velocity of the particles. The average relative orientation of angular and linear velocities depends on the parameters which…

统计力学 · 物理学 2015-06-25 Nikolai V. Brilliantov , Thorsten Poeschel , W. Till Kranz , Annette Zippelius

We study the motion of a test particle in a stationary, axially and reflection symmetric spacetime of a central compact object, as affected by interaction with a test radiation field of the same symmetries. Considering the radiation flux…

广义相对论与量子宇宙学 · 物理学 2015-06-22 Donato Bini , Andrea Geralico , Robert T. Jantzen , Oldrich Semerák , Luigi Stella

The tensor polarization of particles and nuclei becomes constant in the coordinate system rotating with the same angular velocity as the spin and rotates in the lab frame with the above angular velocity. The general equation defining the…

高能物理 - 唯象学 · 物理学 2015-07-07 Alexander J. Silenko

Spectrum of radiation of a relativistic particle moving in a nonhomogeneous magnetic field is considered. The spectrum depends on the pitch-angle $\alpha$ between the velocity direction and a line tangent to the field line. In case of very…

高能天体物理现象 · 物理学 2016-09-30 V. Epp , T. G. Mitrofanova

We give the free energy of equilibrium relativistic matter subject to external gravitational and electromagnetic fields, to one-derivative order in the gradients of the external fields. The free energy allows for a straightforward…

高能物理 - 理论 · 物理学 2016-07-12 Pavel Kovtun

Experiments quantifying the rotational and translational motion of particles in a dense, driven, 2D granular gas floating on an air table reveal that kinetic energy is divided equally between the two translational and one rotational degrees…

软凝聚态物质 · 物理学 2015-06-03 Kiri Nichol , Karen E. Daniels

We derive generalized Langevin equations for the translational and rotational motion of a heated Brownian particle from the fluctuating hydrodynamics of its non-isothermal solvent. The temperature gradient around the particle couples to the…

统计力学 · 物理学 2014-10-01 G. Falasco , M. V. Gnann , D. Rings , K. Kroy

We report on rotating an optically trapped silica nanoparticle in vacuum by transferring spin angular momentum of light to the particle's mechanical angular momentum. At sufficiently low damping, realized at pressures below $10^{-5}$ mbar,…

Active particles break out of thermodynamic equilibrium thanks to their directed motion, which leads to complex and interesting behaviors in the presence of confining potentials. When dealing with active nanoparticles, however, the…

软凝聚态物质 · 物理学 2021-03-29 Falko Schmidt , Hana Šípovà-Jungová , Mikael Käll , Alois Würger , Giovanni Volpe

We study the quantum Vavilov-Cherenkov (QVC) radiation and quantum friction occurring during motion of a small neutral particle parallel to a transparent dielectric plate with the refractive index $n$. This phenomenon occurs above the…

介观与纳米尺度物理 · 物理学 2020-08-19 A. I. Volokitin , B. N. J. Persson

The quantum Brownian motion of a single neutral particle with nonzero electric dipole moment placed in a photon gas at fixed temperature and close to a conducting wall is here examined. The interaction of the particle with the photon field…

量子物理 · 物理学 2023-06-23 G. H. S. Camargo , V. A. De Lorenci , A. L. Ferreira Junior , C. C. H. Ribeiro

The motion of a test particle in the gravitational field of a non-spherical source endowed with both mass and mass quadrupole moment is investigated when a test radiation field is also present. The background is described by the Erez-Rosen…

高能天体物理现象 · 物理学 2015-06-23 Donato Bini , Andrea Geralico , Andrea Passamonti

The influence of the electromagnetic irradiation pressure on a spheroidal metallic nanoparticle at the frequencies close to the surface plasmon vibrations has been considered. With the action of the radiation pressure, the polarizability of…

介观与纳米尺度物理 · 物理学 2022-03-29 N. I. Grigorchuk

The relativistic generalization of a free Brownian motion theory is presented. The global characteristics of the relaxation are {\it explicitly} found for the velocity and momentum (stochastic) kinetics. It is shown that the thermal…

凝聚态物理 · 物理学 2016-08-15 Ryszard Zygadło

The dependence of macroscopic radiation pressure on the velocity of the object being pushed is commonly attributed to the Doppler effect. This need not be the case, and here we highlight velocity dependent radiation pressure terms that have…

光学 · 物理学 2015-06-03 S. A. R. Horsley , M. Artoni , G. C. La Rocca

We have developed a self-consistent description of the radiation heat transfer and dynamics of large perfectly black spherical bodies with sizes much greater than the characteristic wavelength of radiation moving in a photon gas with…

高能天体物理现象 · 物理学 2016-03-02 A. A. Kyasov , G. V. Dedkov

In the present Letter we investigate the heat and momentum fluxes radiated by a hot magneto-optical nanoparticle in its surrounding under the action of an external magnetic field. We show that the flux lines circulate in a confined region…

介观与纳米尺度物理 · 物理学 2018-05-16 Annika Ott , Philippe Ben-Abdallah , Svend-Age Biehs

The tensor polarization of particles and nuclei is constant in a coordinate system rotating with the same angular velocity as the spin. In the laboratory frame, it rotates with this angular velocity. The general equation defining the…

高能物理 - 唯象学 · 物理学 2019-05-01 Alexander J. Silenko

Radiant emittance of dimers and ensembles of particles consisting of gold, graphite and silica glass nanoparticles in vacuum is studied numerically based on the fluctuation-electromagnetic theory. The presence of neighboring particles of…

介观与纳米尺度物理 · 物理学 2013-11-01 G. V. Dedkov , A. A. Kyasov

Levitated nanoparticles are a promising platform for sensing applications and for macroscopic quantum experiments. While the nanoparticles' motional temperatures can be reduced to near absolute zero, their uncontrolled internal degrees of…

量子物理 · 物理学 2025-01-27 Jonas Schäfer , Benjamin A. Stickler , Klaus Hornberger