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- Institute for Research in Fundamental SciencesIR122 papers
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- Centre National de la Recherche ScientifiqueFR30 papers
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23 papers · 1 filter
Nonlocal two-dimensional Yang-Mills- and generalized Yang-Mills-theories
Khaled Saaidi, Mohammad Khorrami
A generalization of the two-dimensional Yang-Mills and generalized Yang-Mills theory is introduced in which the building B-F theory is nonlocal in the auxiliary field. The classica…
Phase transitions in autonomous reaction-diffusion systems on a one-dimensional lattice with boundaries
Amir Aghamohammadi, Mohammad Khorrami
The family of autonomous reaction-diffusion models on a one-dimensional lattice with boundaries is studied. By autonomous, it is meant that the evolution equation for n-point funct…
Oscillations of Andreev states in clean ferromagnetic films
M. Zareyan, W. Belzig, Yu. V. Nazarov
We investigate the influence of the exchange field on the Andreev bound states in a ferromagnetic (F) film backed on one side by a superconductor (S). Our model accounts for diffus…
Berry phase for spin--1/2 particles moving in a spacetime with torsion
M. Alimohammadi, A. Shariati
Berry phase for a spin--1/2 particle moving in a flat spacetime with torsion is investigated in the context of the Einstein-Cartan-Dirac model. It is shown that if the torsion is d…
Phase transition in an asymmetric generalization of the zero-temperature Glauber model
Mohammad Khorrami, Amir Aghamohammadi
An asymmetric generalization of the zero-temperature Glauber model on a lattice is introduced. The dynamics of the particle-density and specially the large-time behavior of the sys…
Gauge Symmetry As Symmetry Of Matrix Coordinates
Amir H. Fatollahi
We propose a new point of view to gauge theories based on taking the action of symmetry transformations directly on the coordinates of space. Via this approach the gauge fields are…