Browsing Mathematics / Matematik by Publisher "World Scientific Publishing"
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Entanglement in two qubit magnetic models with dm antisymmetric anisotropic exchange interaction
(World Scientific Publishing, 201003)In the present paper, an influence of the anisotropic antisymmetric exchange interaction, the DzialoshinskiiMoriya (DM) interaction, on entanglement of two qubits in various magnetic spin models, including the pure DM model ... 
New casimir energy calculations
(World Scientific Publishing, 2007)New Casimir energy results for massless scalar field in some 3 dimensional cavities are presented. We attempted to discuss the correlation between the sign and the magnitude of the energy and the shape of the cavities. ... 
On pseudo semisimple rings
(World Scientific Publishing, 201303)A necessary and sufficient condition is obtained for a right pseudo semisimple ring to be left pseudo semisimple. It is proved that a right pseudo semisimple ring is an internal exchange ring. It is also proved that a right ... 
On the number of bound states of point interactions on hyperbolic manifolds
(World Scientific Publishing, 201701)We study the bound state problem for N attractive point Dirac δinteractions in two and threedimensional Riemannian manifolds. We give a sufficient condition for the Hamiltonian to have N bound states and give an explicit ... 
Resonance solitons as black holes in Madelung fluid
(World Scientific Publishing, 200208)Envelope solitons of the Nonlinear Schrödinger equation (NLS) under quantum potential's influence are studied. Corresponding problem is found to be integrable for an arbitrary strength, s ≠ 1, of the quantum potential. For ... 
Rings over which flat covers of simple modules are projective
(World Scientific Publishing, 201206)Let R be a ring with identity. We prove that, the flat cover of any simple right Rmodule is projective if and only if R is semilocal and J(R) is cotorsion if and only if R is semilocal and any indecomposable flat right ... 
Selfdual ChernSimons solitons and quantum potential
(World Scientific Publishing, 200102)An influence of the quantum potential on the ChernSimons solitons leads to quantization of the statistical parameter κ = me 2/g, and the quantum potential strength s = 1  m 2. A new type of exponentially localized ... 
Soliton resonances, black holes and madelung fluid
(World Scientific Publishing, 200102)The reactiondiffusion system realizing a particular gauge fixing condition of the JackiwTeitelboim gravity is represented as a coupled pair of Burgers equations with positive and negative viscosity. For acoustic metric ... 
A Stabilizing subgrid for convectiondiffusion problem
(World Scientific Publishing, 200602)A stabilizing subgrid which consists of a single additional node in each triangular element is analyzed by solving the convectiondiffusion problem, especially in the case of small diffusion. The choice of the location of ...