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25 papers · 1 filter
Enumeration of closed random walks in the square lattice according to their areas
Morteza Mohammad-Noori
We study the area distribution of closed walks of length , beginning and ending at the origin. The concept of area of a walk in the square lattice is generalized and the usefuln…
Center vortex model and the G(2) gauge group
Sedigheh Deldar, Hadi Lookzadeh, Seyed Mohsen Hosseini Nejad
The thick center vortex model is applied to G(2) gauge group to obtain the potentials between static sources of the fundamental and adjoint representations. The group G(2) has only…
Super-acceleration in non-minimal derivative coupling model
H. Mohseni Sadjadi
A scalar field model with non-minimal derivative coupling to gravity is considered. It is shown that although in the absence of matter and potential the phantom divide line crossin…
Characteristics of the Sculptured Cu Thin Films and Their Optical Properties as a function of deposition rate
H. Savaloni, F. Babaei, S. Song +1
Sculptured copper thin films were deposited on glass substrates, using different deposition rates. The nano-structure and morphology of the films were obtained, using X-ray diffrac…
On the mass spectrum of noncommutative Schwinger model in Euclidean space
F. Ardalan, M. Ghasemkhani, N. Sadooghi
The mass spectrum of the noncommutative QED in two-dimensional Euclidean space is derived first in a perturbative approach at one-loop level and then in a nonpertu…
Comparative Study Between Dispersive and Non-Dispersive Dielectric Permittivity in Spectral Remittances of Chiral Sculptured Zirconia Thin Films
Ferydon Babaei, Hadi Savaloni
The transmission and reflection spectra from a right-handed chiral sculptured zirconia thin film are calculated using the piecewise homogeneity approximation method and the Bruggem…