From the generalized fluctuation-dissipation theorem, it is known that a body at rest made of nonreciprocal material may experience torque, even in vacuum, if not thermal equilibrium with its environment. However, does self-propulsion such circumstances, except higher order. Nevertheless, both normal torque and lateral force when adjacent to an ordinary surface transverse translational symmetry. We explore how these phenomena arise, discuss what terminal velocities might be achieved, point...

Continuing a program of examining the behavior vacuum expectation value stress tensor in background which varies only single direction, we here study electromagnetic medium with permittivity depending on spatial coordinate, specifically, planar dielectric half-space facing region. There are divergences occurring that regulated by temporal and point-splitting, have universal character for both transverse electric magnetic modes. The nature depends model dispersion adopted. And there...

We calculate the Casimir forces in two configurations, namely, three parallel dielectric slabs and a slab between perfectly conducting plates, where materials are dispersive inhomogeneous direction perpendicular to interfaces. A renormalization scheme is proposed consisting of subtracting effect one interface with single medium. Some examples worked out illustrate this scheme. Our method always gives finite results consistent principle virtual work; it extends...

Quantum fluctuations can induce friction on a neutral but polarizable particle and cause it to radiate energy even if the is moving in free space filled with blackbody radiation not contact or close any surface other object. We explore energetics of such uniformly vacuum, continuing our previous investigations quantum friction. The intrinsic polarizability considered be purely real before dressed by radiation. then guaranteed nonequilibrium steady state (NESS), where absorbs emits at same...

Quantum vacuum friction experienced by an atom, where the only dissipative mechanism is through its interaction with radiation field, has been studied in our recent paper [Phys. Rev. D 104, 116006 (2021)]. on intrinsically particle different that arises not from field fluctuations but also dipole intrinsic to particle. As a result, can be out of nonequilibrium steady state (NESS), and therefore loses or gains internal energy (rest mass). Only if temperature equals special NESS will NESS. In...

A neutral but polarizable particle at rest near a perfectly conducting plate feels force normal to the surface of plate, which tends pull towards plate. This is well-known Casimir-Polder force, has long been theoretically proposed and experimentally observed. In this paper, we explore transverse frictional on an atom moving uniformly parallel Although many theoretical predictions can be found for quantum friction above imperfect surface, extreme situation with seems have largely unaddressed...

It is important to understand the characteristics of explosive sympathetic detonation for safety. Sympathetic reaction test GHL (RDX/Al/Binder) charges with shell are conducted. A model established. The elements-apart method and nodes random-failure used in describe expansion progress expanding randomly forming process fragments. Random phenomena acceptor charge simulated.

This paper studies the classical electromagnetic self-force on a moving dipole, in vacuum and medium, resulting dipole Vavilov-\ifmmode \check{C}\else \v{C}\fi{}erenkov radiation, as well quantum black-body friction polarizable particle vacuum.

Not only are Casimir interaction entropies not guaranteed to be positive, but also, more strikingly, self-entropies of bodies can negative. Here, we attempt interpret the physical origin and meaning these negative by investigating self-entropy a neutral spherical nanoparticle. After extracting polarizabilities such particle examining asymptotic behavior scattering Green's function, compute corresponding free energy entropy. Two models for nanoparticle, namely plasma...

The classical electromagnetic friction of a charged particle moving with prescribed constant velocity parallel to planar imperfectly conducting surface is reinvestigated. As concrete example, the Drude model used describe conductor. transverse electric and magnetic contributions have very different character both in low (nonrelativistic) high (ultrarelativistic) regimes. Both numerical analytical results are given. Most remarkably, contribution has maximum for $|\mathbf{v}|<c$, persists...

From the generalized fluctuation-dissipation theorem, it is known that a body at rest made of nonreciprocal material may experience torque, even in vacuum, if not thermal equilibrium with its environment. However, does self-propulsion such circumstances, except higher order. Nevertheless, both normal torque and lateral force when adjacent to an ordinary surface transverse translational symmetry. We explore how these phenomena arise, discuss what terminal velocities might be achieved, point...

The method of parabolized stability equations (PSE) are applied in the analysis nonlinear and simulation flow structure supersonic free shear layer. High accuracy numerical techniques including self-similar basic flow, high order differential method, appropriate transformation decomposition terms adopted developed to solve PSE effectively for spatial evolving unstable waves which dominate investigated through coupling marching methods. interactions between harmonic further analyzed...

The method of nonlinear parabolized stability equations (PSE) is applied in the simulation vortex structures compressible mixing layer. spatially-evolving unstable waves, which dominate structure, are investigated through spatial marching method. instantaneous flow field obtained by adding harmonic waves to basic flow. results show that T-S do not keep growing exponentially as linear evolution, energy transfer high order modes, and finally all modes get saturated due interaction. mean...