A. Seyedzahedi

Publications (3)0 Total impact

• Article: Fermion Particle Production in Dynamical Casimir Effect in a Three Dimensional Box

  M. R. Setare, A. Seyedzahedi
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  ABSTRACT: In this paper we investigate the problem of fermion creation inside a three dimensional box. We present an appropriate wave function which satisfies the Dirac equation in this geometry with MIT bag model boundary condition. We consider walls of the box to have dynamic and introduce the time evolution of the quantized field by expanding it over the 'instantaneous basis'. We explain how we can obtain the average number of particles created. In this regard we find the Bogliubove coefficients. We consider an oscillation and determine the coupling conditions between different modes that can be satisfied depending on the cavity's spectrum. Assuming the parametric resonance case we obtain an expression for the mean number of created fermions in each mode of an oscillation and their dynamical Casimir energy.
  04/2012;
• Source

  Available from: arxiv.org

  Article: Casimir Energy For a Massive Dirac Field in One Spatial Dimension: A Direct Approach

  R. Saghian, M. A. Valuyan, A. Seyedzahedi, S. S. Gousheh
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  ABSTRACT: In this paper we calculate the Casimir energy for a massive fermionic field confined between two points in one spatial dimension, with the MIT Bag Model boundary condition. We compute the Casimir energy directly by summing over the allowed modes. The method that we use is based on the Boyer's method, and there will be no need to resort to any analytic continuation techniques. We explicitly show the graph of the Casimir energy as a function of the distance between the points and the mass of the fermionic field. We also present a rigorous derivation of the MIT Bag Model boundary condition.
  04/2012;
• Article: Fermionic Casimir energy in a three-dimensional box

  A. Seyedzahedi, R. Saghian, S. S. Gousheh
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  ABSTRACT: In this paper we calculate the Casimir energy for a massless fermionic field confined inside a three-dimensional rectangular box. We use the MIT bag model boundary condition for the confinement. We use the direct mode summation method along with the Abel-Plana summation formula to compute the Casimir energy, without any use of regularization or analytic continuation techniques. We obtain a negative Casimir energy, as opposed to the previously reported result for the interior of a three-dimensional sphere.
  Phys. Rev. A. 09/2010; 82(3).