Browsing by Author "Khusnutdinov N."

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  • Polarization of vacuum with nontrivial boundary conditions 
    Khusnutdinov N.; Khabibullin A. (2011)
    In the framework of the zeta-regularization approach, we consider the polarization of the scalar field vacuum with nontrivial boundary conditions originating from electrodynamics in the presence of a conducting infinitely ...
  • Self-action in gravity 
    Khusnutdinov N. (2021)
    A particle moving with variable acceleration in the flat space-time affects the self-force due to outgoing radiation. The gravitational fields bring an additional contribution to self-force due to scattering waves on the ...
  • Self-action of a point charge in a wormhole space-time 
    Khusnutdinov N.; Bakhmatov I. (2007)
    We consider the self-energy and the self-force for an electrically charged particle at rest in the wormhole space-time. We develop a general approach to finding the self-force and apply it to the two specific profiles of ...
  • Self-energy and self-force in the space-time of a thick cosmic string 
    Khusnutdinov N.; Bezerra V. (2001)
    We calculate the self-energy and self-force for an electrically charged particle at rest in the background of Gott-Hiscock cosmic string space-time. We find the general expression for the self-energy which is expressed in ...
  • Self-energy and self-force on a scalar particle in a wormhole spacetime 
    Bezerra V.; Khusnutdinov N. (2010)
    We consider the self-energy and the self-force for scalar massless particles at rest in the short-throat flat-spacetime wormhole background. In some limiting cases we found how the sign of the self-energy changes with the ...
  • Self-energy in the Gott-Hiscock space-time 
    Khusnutdinov N.; Bezerra V. (2002)
    We calculate the self-energy for an electrically charged particle at rest in the background of Gott-Hiscock cosmic string space-time. The self-energy continuously falls down outward from the string's center with maximum ...
  • Self-force and the Huygens principle 
    Khusnutdinov N. (2020)
    © 2020 World Scientific Publishing Company. We consider a relation between the Huygens Principle (HP) in gravity and the self-interaction force. We show that the self-force for an electric particle in the plane gravitational ...
  • Self-force of a point charge in the spacetime of a massive wormhole 
    Khusnutdinov N.; Popov A.; Lipatova L. (2010)
    We consider the self-potential and the self-force for an electrically charged particle at rest in a massive wormhole spacetime. We develop a general approach for the renormalization of the electromagnetic field of such a ...
  • Self-force on a scalar particle in a class of wormhole spacetimes 
    Bezerra V.; Khusnutdinov N. (2009)
    We consider the self-energy and the self-force for scalar massive and massless particles at rest in a class of wormhole spacetimes. We develop a general approach to obtain the self-force and apply it to the two specific ...
  • Self-interaction for particles in the wormhole space-times 
    Khusnutdinov N. (2011)
    The self-energy and self-force for particles with electric and scalar charges at rest in the space-time of massless and massive wormholes are considered. The particle with electric charge is always attracted to wormhole ...
  • Self-interaction force for a particle in cone spacetime 
    Khusnutdinov N. (1994)
    The force acting on a charged particle moving along an arbitrary trajectory near a straight cosmic string is calculated. This interaction leads to scattering of particles by the cosmic string. The scattering cross section ...
  • Semiclassical wormholes 
    Khusnutdinov N. (2003)
    Smooth-throat wormholes are treated as possessing quantum fluctuation energy with a scalar massive field as its source. The heat kernel coefficients of the Laplace operator are calculated in the background of the ...
  • Semiclassical wormholes with a smooth throat 
    Khusnutdinov N. (2004)
    We propose a procedure for calculating heat kernel coefficients and use it to derive the expression for any heat kernel coefficient B i for an arbitrary profile of the throat. We give an explicit form of these coefficients ...
  • Some remarks on topological defects and their gravitational consequences 
    Bezerra V.; Marques G.; Khusnutdinov N. (2002)
    We calculate the energy radiated by a uniformly moving charged scalar particle in the spacetime of a point-like global monopole, for small solid angle deficit. We show that this energy is proportional to the cube of the ...
  • The Casimir effect for planar layered system 
    Kashapov R.; Khusnutdinov N.; Woods L. (2016)
    © 2016 World Scientific Publishing Company.We consider the Casimir energy and force for stack of the N conductive planes at zero temperature. The Casimir-Polder force for an atom near this stack is calculated, too. We ...
  • The Casimir effect for planar layered system 
    Kashapov R.; Khusnutdinov N.; Woods L. (2016)
    © 2016 World Scientific Publishing Company. We consider the Casimir energy and force for stack of the N conductive planes at zero temperature. The Casimir-Polder force for an atom near this stack is calculated, too. We ...
  • The Casimir effect in a wormhole spacetime 
    Khabibullin A.; Khusnutdinov N.; Sushkov S. (2006)
    We consider the Casimir effect for a quantized massive scalar field with non-conformal coupling ξ in a wormhole spacetime whose throat is surrounded by a spherical shell. In the framework of the zeta-regularization approach ...
  • The thermal CasimirPolder interaction of an atom with a spherical plasma shell 
    Khusnutdinov N. (2012)
    The van der Waals and CasimirPolder interaction energy of an atom with an infinitely thin sphere with finite conductivity is investigated in the framework of the hydrodynamic approach at finite temperature. This configuration ...
  • The vacuum expectation value of the spinor massive field in the cosmic string spacetime 
    Bezerra V.; Khusnutdinov N. (2006)
    We find the contribution to the vacuum expectation value of the energy-momentum tensor of a massive Dirac field due to the conical geometry of the cosmic string spacetime. The heat kernel and heat kernel expansion for the ...
  • Thermal Casimir and Casimir-Polder interactions in N parallel 2D Dirac materials 
    Khusnutdinov N.; Kashapov R.; Woods L. (2018)
    © 2018 IOP Publishing Ltd. The Casimir and Casimir-Polder interactions are investigated in a stack of equally spaced graphene layers. The optical response of the individual graphene is taken into account using gauge invariant ...

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