28 citations · 199 across the 19 of their papers we have counts for
15 papers · 1 filter
Vacuum Polarization Effects of Pointlike Impurity
Yuri V. Grats, Pavel Spirin
We develop precise formulation for the effects of vacuum polarization near a pointlike source with a zero-range (-like) potential in three spatial dimensions. There are differen…
Casimir interaction of finite-width strings
Yuri V. Grats, Pavel Spirin
Within the trln-formalism we investigate the vacuum interaction of cosmic strings and the influence of strings width on this effect. For the massless real scalar field we compute t…
Piercing of domain walls: new mechanism of gravitational radiation
Dmitri Gal'tsov, Elena Melkumova, Pavel Spirin
Domain wall (DW) moving in media undergoes the friction force due to particle scattering. However certain particles are not scattered, but perforate the wall. As a result, the wall…
Vacuum polarization and classical self-action near higher-dimensional defects
Yuri V. Grats, Pavel Spirin
We analyze the gravity-induced effects associated with a massless scalar field in a higher-dimensional spacetime being the tensor product of -dimensional Minkowski space and…
Domain Walls: Momentum Conservation in Absence of Asymptotic States
D. V. Gal'tsov, E. Yu. Melkumova, P. Spirin
Gravitational potentials of the domain walls in the linearized gravity are growing with distance, so the particle scattering by the wall can not be described in terms of free asymp…
Gravitational Bremsstrahlung from Massless-particle Collisions
Pavel Spirin, Theodore N. Tomaras
The angular and frequency characteristics of the gravitational radiation emitted in collisions of massless particles is studied perturbatively in the context of classical General R…
Branestrahlung: radiation in the particle-brane collision
Dmitry Gal'tsov, Elena Melkumova, Pavel Spirin
We calculate the radiation accompanying gravitational collision of the domain wall and the point particle in five-dimensional spacetime. This process, which can be regarded as bran…
Gravitational radiation in massless-particle collisions
Pavel Spirin, Theodore N. Tomaras
The angular and frequency characteristics of the gravitational radiation emitted in collisions of massless particles is studied perturbatively in the context of classical General R…
Energy-momentum balance in particle - domain wall perforating collision
D. V. Gal'tsov, E. Yu. Melkumova, P. A. Spirin
We investigate the energy-momentum balance in the perforating collision of a point particle with an infinitely thin planar domain wall within the linearized gravity in arbitrary di…
Perforation of domain wall by point mass
D. V. Gal'tsov, E. Yu. Melkumova, P. A. Spirin
We investigate collision of a point particle and an infinitely thin planar domain wall interacting gravitationally within the linearized gravity in Minkowski space-time of arbitrar…
Vector Bremsstrahlung by Ultrarelativistic Collisions in Higher Dimensions
Yiannis Constantinou, Pavel Spirin
A classical computation of vector bremsstrahlung in ultrarelativistic gravitational-force collisions of massive point particles is presented in an arbitrary number d of extra dimen…
Gravitational bremsstrahlung in ultra-planckian collisions
Dmitry Gal'tsov, Pavel Spirin, Theodore N. Tomaras
A classical computation of gravitational bremsstrahlung in ultra-planckian collisions of massive point particles is presented in an arbitrary number d of toroidal or non-compact ex…
Scalar Bremsstrahlung in Gravity-Mediated Ultrarelativistic Collisions
Yiannis Constantinou, Dmitry Gal'tsov, Pavel Spirin +1
Classical bremsstrahlung of a massless scalar field is studied in gravity mediated ultra-relativistic collisions with impact parameter of two massive point particles in the…
Classical ultrarelativistic bremsstrahlung in extra dimensions
D. V. Gal'tsov, G. Kofinas, P. Spirin +1
The emitted energy and the cross-section of classical scalar bremsstrahlung in massive particle collisions in D=4+d dimensional Minkowski space M_D as well as in the brane world M_…
Radiation reaction reexamined: bound momentum and Schott term
Dmitri V. Gal'tsov, Pavel Spirin
We review and compare two different approaches to radiation reaction in classical electrodynamics of point charges: a local calculation of the self-force using the charge equation…