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5 papers · 1 filter
Gauged motion in general relativity and in Kaluza-Klein theories
Mohammad Nouri-Zonoz, Ali Reza Tavanfar
In a recent paper [1] a new generalization of the Killing motion, the {\it gauged motion}, has been introduced for stationary spacetimes where it was shown that the physical symmet…
Tensor Products of Some Special Rings
Masoud Tousi, Siamak Yassemi
In this paper we solve a problem, originally raised by Grothendieck, on the properties, i.e. Complete intersection, Gorenstein, Cohen--Macaulay, that are conserved under tensor pro…
Spin 0 and spin 1/2 quantum relativistic particles in a constant gravitational field
M. Khorrami, M. Alimohammadi, A. Shariati
The Klein-Gordon and Dirac equations in a semi-infinite lab (), in the background metric $\ds^2 = u^2(x) (-\dt^2 + \dx^2) + \dy^2 + \dz^2$, are investigated. The resulting e…
Exactly solvable models through the generalized empty interval method, for multi-species interactions
Amir Aghamohammadi, Masoud Alimohammadi, Mohammad Khorrami
Multi-species reaction-diffusion systems, with nearest-neighbor interaction on a one-dimensional lattice are considered. Necessary and sufficient constraints on the interaction rat…
Gravitational Microlensing in NUT Space
Sohrab Rahvar, Mohammad Nouri-Zonoz
We study the theoretical signature of magnetic masses on the light curve of gravitational microlensing effect in NUT space. The light curves for microlensing events in NUT space ar…