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10 papers · 1 filter
A mathematical approach with delay kernel for the role of the immune response time delay in periodic therapy of the tumors
G. Mircea, M. Neamtu, R. F. Horhat +1
We consider the model of interaction between the immune system and tumor cells including a memory function that reflect the influence of the past states, to simulate the time neede…
Applying the Dirac equation to derive the transfer matrix for piecewise constant potentials
Ion I. Cotaescu, Paul Gravila, Marius Paulescu
One propose a relativistic version of the transfer matrix method for an electron moving through a given number of rectangular barriers of arbitrary shape. It is shown that starting…
Analysis of a 3D chaotic system
G. Tigan, D. Opris
A 3D nonlinear chaotic system, called the T system, is analyzed in this paper. Horseshoe chaos is investigated via the heteroclinic Shilnikov method constructing a heteroclinic con…
Implementing Canonical Seesaw Mechanism in a 3-3-1 Gauge Model without Exotic Electric Charges
Adrian Palcu
We prove that - even at a low TeV scale - the canonical seesaw mechanism can be naturally implemented in the exact solution of a particular 3-3-1 gauge model, since a very small al…
Neutrino Mass Squared Differences in the Exact Solution of a 3-3-1 Gauge Model without Exotic Electric Charges
Adrian Palcu
The mass splittings for the Majorana neutrinos in the exact solution of a particular 3-3-1 gauge model are computed here in detail. Since both and the mass…
Remarks on the spherical waves of the Dirac field on de Sitter spacetime
Ion I. Cotăescu, Radu Racoceanu, Cosmin Crucean
The Shishkin's solutions of the Dirac equation in spherical moving frames of the de Sitter spacetime are investigated pointing out the set of commuting operators whose eigenvalues…