Zobrazeno 1 - 10
of 942
pro vyhledávání: '"Porsezian, K."'
We present an analysis of modulational instability of diffractionless waves in a face-centered square lattice of waveguides featuring non-Kerr nonlinearity, which are constituted by a combination of positive and negative refractive indices. The unit
Externí odkaz:
http://arxiv.org/abs/2012.04287
Publikováno v:
Phys. Rev. A 92, 063606 (2015)
We study modulation instability (MI) of flat states in two-component spin-orbit-coupled (SOC) Bose-Einstein condensates (BECs) in the framework of coupled Gross-Pitaevskii equations for two components of the pseudospinor wave function. The analysis i
Externí odkaz:
http://arxiv.org/abs/2005.11505
We obtain general continuous-wave (CW)\ solutions in the model of a spinor positronium condensate in the absence of magnetic field. The CW solutions with both in-phase ($n=0$) and out-of-phase ($n=1$) spin components exist, with their ranges limited
Externí odkaz:
http://arxiv.org/abs/1801.00590
Analyzing a Gross-Pitaevskii equation with cubic, quartic, and quintic nonlinearities through analytical and numerical methods, we examine the stability of two-dimensional (2D) trapless Bose-Einstein condensates (BECs) with two-, three-body interacti
Externí odkaz:
http://arxiv.org/abs/1706.06345
By solving the Gross-Pitaevskii equation analytically and numerically, we reexamine the implosion phenomena that occur beyond the critical value of the number of atoms of an attractive Bose-Einstein condensate (BEC) with cigar-shape trapping geometry
Externí odkaz:
http://arxiv.org/abs/1706.06356
Autor:
Nithyanandan, K., Ali, A. K. Shafeeque, Nishad, M. P. M., Porsezian, K., Dinda, P. Tchofo, Grelu, P.
We report a novel optical multistability in two core oppositely directed saturable coupler (ODSC) with negative index material (NIM) channel. The dynamics are studied using the Langrangian variational method and Jacobi elliptic functions are used to
Externí odkaz:
http://arxiv.org/abs/1703.00486
We present the study of the dark soliton dynamics in an inhomogenous fiber by means of a variable coefficient modified nonlinear Schr\"{o}dinger equation (Vc-MNLSE) with distributed dispersion, self-phase modulation, self-steepening and linear gain/l
Externí odkaz:
http://arxiv.org/abs/1702.02632
Publikováno v:
Physical Review E 93, 062201 (2016)
We consider a two-level atomic system, interacting with an electromagnetic field controlled in amplitude and frequency by a high intensity laser. We show that the amplitude of the induced electric field, admits an envelope profile corresponding to a
Externí odkaz:
http://arxiv.org/abs/1608.05153
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 49 245301 (2016)
We theoretically investigate the dynamics of modulation instability (MI) in two-dimensional spin-orbit coupled Bose-Einstein condensates (BECs). The analysis is performed for equal densities of pseudo-spin components. Different combination of the sig
Externí odkaz:
http://arxiv.org/abs/1606.04426
We investigate a generalized coupled nonlinear Schrodinger (GCNLS) equation containing Self-Phase Modulation (SPM), Cross-Phase Modulation (XPM) and Four Wave Mixing (FWM) describing the propagation of electromagnetic radiation through an optical fib
Externí odkaz:
http://arxiv.org/abs/1602.07832