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- Islamic Azad University, Science and Research BranchIR89 papers
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8 papers · 1 filter
Conformally invariant wave-equations and massless fields in de Sitter spacetime
Samad Behroozi, Shahriar Rouhani, Mohammad Vahid Takook +1
Conformally invariant wave equations in de Sitter space, for scalar and vector fields, are introduced in the present paper. Solutions of their wave equations and the related two-po…
Approximate Homomorphisms of Ternary Semigroups
M. Amyari, M. S. Moslehian
A mapping between ternary semigroups will be called a ternary homomorphism if . In this paper, we prove the generalized…
Self-consistent iterative solution of the exchange-only OEP equations for simple metal clusters in jellium model
M. Payami, Tahereh Mahmoodi
In this work, employing the exchange-only orbital-dependent functional, we have obtained the optimized effective potential using the simple iterative method proposed by Kümmel and…
Level Crossing Analysis of Burgers Equation in 1+1 Dimensions
M. Sadegh Movahed, A. Bahraminasab, H. Rezazadeh +1
We investigate the average frequency of positive slope , crossing the velocity field in the Burgers equation. The level crossing analysis in the invisci…
N=1 de Sitter Supersymmetry Algebra
Ali Pahlavan, Shahriar Rouhani, Mohammad Vahid Takook
Recalling the universal covering group of de Sitter, the transformation properties of the spinor fields and , in the ambient space notation, are presented in thi…
Discrete Symmetries for Spinor Field in de Sitter Space
S. Moradi, S. Rouhani, M. V. Takook
Discrete symmetries, parity, time reversal, antipodal, and charge conjugation transformations for spinor field in de Sitter space, are presented in the ambient space notation, i.e.…