Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Gaididei, Yu B."'
The role of thermal fluctuations on the conformational dynamics of a single closed filament is studied. It is shown that, due to the interaction between charges and bending degrees of freedom, initially circular aggregates may undergo transformation
Externí odkaz:
http://arxiv.org/abs/0810.2216
A theory of photoinduced directed bending of non-crystalline molecular films is presented. Our approach is based on elastic deformation of the film due to interaction between molecules ordered through polarized light irradiation. The shape of illumin
Externí odkaz:
http://arxiv.org/abs/0810.1711
Quantum effects in a system of coupled atomic and molecular Bose-Einstein condensates in the framework of a two-mode model are studied numerically and analytically, using the discrete WKB approach. In contrast to the mean-field approximation, the WKB
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511230
A simple phenomenological model for describing the conformational dynamics of biological macromolecules via the nonlinearity-induced instabilities is proposed. It is shown that the interaction between charges and bending degrees of freedom of closed
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506178
Motivated by the example of a curved waveguide embedded in a photonic crystal, we examine the effects of geometry in a ``quantum channel'' of parabolic form. We study the linear case and derive exact as well as approximate expressions for the eigenva
Externí odkaz:
http://arxiv.org/abs/nlin/0409010
Publikováno v:
Phys. Rev. E 69, 026603 (2004)
A bent chain of coupled Morse oscillators with long-range dispersive interaction is considered. Moving localized excitations may be trapped in the bending region. Thus chain geometry acts like an impurity. An energy funneling effect is observed in th
Externí odkaz:
http://arxiv.org/abs/nlin/0310023
We consider the propagation of sine-Gordon kinks in a planar curved strip as a model of nonlinear wave propagation in curved wave guides. The homogeneous Neumann transverse boundary conditions, in the curvilinear coordinates, allow to assume a homoge
Externí odkaz:
http://arxiv.org/abs/nlin/0309001
Publikováno v:
J. Phys. A: Math. Gen. 35:8885-8902, 2002.
The existence, stability and movability of breathers in a model for alpha-helix proteins is studied. This model basically consists a chain of dipole moments parallel to it. The existence of localized linear modes brings about that the system has a ch
Externí odkaz:
http://arxiv.org/abs/nlin/0206050
We study the existence and stability of localized states in the discrete nonlinear Schr{\"o}dinger equation (DNLS) on two-dimensional non-square lattices. The model includes both the nearest-neighbor and long-range interactions. For the fundamental s
Externí odkaz:
http://arxiv.org/abs/nlin/0205045
Publikováno v:
Phys. Rev. A 67, 043802 (2003)
A model is proposed where two $\chi^{(2)}$ nonlinear waveguides are contained in a cavity suited for second-harmonic generation. The evanescent wave coupling between the waveguides is considered as weak, and the interplay between this coupling and th
Externí odkaz:
http://arxiv.org/abs/quant-ph/0205029