Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Mertens, Franz G."'
Autor:
Cooper, Fred, Khare, Avinash, Quintero, Niurka R., Sánchez-Rey, Bernardo, Mertens, Franz G., Saxena, Avadh
The damped and parametrically driven nonlinear Dirac equation with arbitrary nonlinearity parameter $\kappa$ is analyzed, when the external force is periodic in space and given by $f(x) =r\cos(K x)$, both numerically and in a variational approximatio
Externí odkaz:
http://arxiv.org/abs/1912.00103
Autor:
Gaididei, Yuri, Kravchuk, Volodymyr P., Mertens, Franz G., Pylypovskyi, Oleksandr V., Saxena, Avadh, Sheka, Denis D., Volkov, Oleksii M.
Publikováno v:
Low Temperature Physics, 2018, v. 44, No. 7, pp. 634-643
Spin waves in magnetic nanowires can be bound by a local bending of the wire. The eigenfrequency of a truly local magnon mode is determined by the curvature: a general analytical expression is established for any infinitesimally weak localized curvat
Externí odkaz:
http://arxiv.org/abs/1801.06945
Autor:
Cooper, Fred, Dawson, John F., Mertens, Franz G., Arevalo, Edward, Quintero, Niurka R., Mihaila, Bogdan, Khare, Avinash, Saxena, Avadh
We discuss the effect of small perturbation on nodeless solutions of the nonlinear \Schrodinger\ equation in 1+1 dimensions in an external complex potential derivable from a parity-time symmetric superpotential that was considered earlier [Phys.~Rev.
Externí odkaz:
http://arxiv.org/abs/1707.01574
Publikováno v:
Phys. Rev. E 96, 052219 (2017)
We consider the massless nonlinear Dirac (NLD) equation in $1+1$ dimension with scalar-scalar self-interaction $\frac{g^2}{2} (\bar{\Psi} \Psi)^2$ in the presence of three external electromagnetic potentials $V(x)$, a potential barrier, a constant po
Externí odkaz:
http://arxiv.org/abs/1705.11037
The dynamics of non-autonomous bright matter-wave solitons in Rabi coupled binary Bose-Einstein condensates is explored. By performing a unitary and similarity/lens-type transformation, we reduce the non-autonomous Gross-Pitaevskii equation into the
Externí odkaz:
http://arxiv.org/abs/1705.02829
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Autor:
Mertens, Franz G., Cooper, Fred, Shao, Sihong, Quintero, Niurka R., Saxena, Avadh, Bishop, A. R.
We consider the nonlinear Dirac (NLD) equation in 1+1 dimension with scalar-scalar self-interaction in the presence of external forces as well as damping of the form $\gamma^0 f(x,t) - i \mu \gamma^0 \Psi$, where both $f, \{f_j = r_i e^{i K_j x} \}$
Externí odkaz:
http://arxiv.org/abs/1611.04066
Autor:
Mertens, Franz G., Cooper, Fred, Arevalo, Edward, Khare, Avinash, Saxena, Avadh, Bishop, A. R.
Publikováno v:
Phys. Rev. E 94, 032213 (2016)
We discuss the behavior of solitary wave solutions of the nonlinear Schr{\"o}dinger equation (NLSE) as they interact with complex potentials, using a four parameter variational approximation based on a dissipation functional formulation of the dynami
Externí odkaz:
http://arxiv.org/abs/1605.08476
Autor:
Mertens, Franz G., Cooper, Fred, Quintero, Niurka R., Shao, Sihong, Khare, Avinash, Saxena, Avadh
We consider the nonlinear Dirac (NLD) equation in 1+1 dimension with scalar-scalar self-interaction in the presence of external forces as well as damping of the form $ f(x,t) - i \mu \gamma^0 \Psi$, where both $f$ and $\Psi$ are two-component spinors
Externí odkaz:
http://arxiv.org/abs/1502.08006
Autor:
Volkov, Oleksii M., Kravchuk, Volodymyr P., Sheka, Denis D., Gaididei, Yuri, Mertens, Franz G.
The combined action of a transverse spin-polarized current and the current-induced {\O}rsted field on long ferromagnetic nanostripes is studied numerically and analytically. The magnetization behavior is analyzed for stripes with various widths and f
Externí odkaz:
http://arxiv.org/abs/1502.05885