منابع مشابه
Casimir effect in Domain Wall formation
The Casimir forces on two parallel plates in conformally flat de Sitter background due to conformally coupled massless scalar field satisfying mixed boundary conditions on the plates is investigated. In the general case of mixed boundary conditions formulae are derived for the vacuum expectation values of the energy-momentum tensor and vacuum forces acting on boundaries. Different cosmological ...
متن کاملCasimir effect in background of static domain wall
In this paper we investigate the vacuum expectation values of energymomentum tensor for conformally coupled scalar field in the standard parallel plate geometry with Dirichlet boundary conditions and on background of planar domain wall case. First we calculate the vacuum expectation values of energy-momentum tensor by using the mode sums, then we show that corresponding properties can be obtain...
متن کاملDomain Wall Formation in Ni x Fe
In terms of a multiscale approach based on the Landau-Ginzburg expansion and on ab initio parameters evaluated by means of the fully relativistic screened Korringa-Kohn-Rostoker method, the width of domain walls is evaluated for the whole range of concentration in NixFe1 x. It is found that domain-wall formation occurs only for x < 20% and x > 55%; i.e., in the neighborhood of the structural ph...
متن کاملSpontaneous formation of domain wall lattices in two spatial dimensions
We show that the process of spontaneous symmetry breaking can trap a field theoretic system in a highly non-trivial state containing a lattice of domain walls. In one large compact space dimension, a lattice is inevitably formed. In two dimensions, the probability of lattice formation depends on the ratio of sizes Lx, Ly of the spatial dimensions. We find that a lattice can form even if R ≡ Ly/...
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A heuristic way to calculate the approximate value of the Casimir force is introduced
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2003
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x03015131