Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Tamilselvan, K"'
We investigate the nontrivial characteristics of modulational instability (MI) in a system of Bragg gratings with saturable nonlinearity. We also introduce an equal amount of gain and loss into the existing system which gives rise to an additional de
Externí odkaz:
http://arxiv.org/abs/2304.01927
It is well-known that third-order dispersion (TOD) never allows the continuous wave of any nonlinear Schroedinger (NLS) type system to experience modulational instability (MI). Remarkably, we demonstrate a new kind of MI induced by TOD with spatial d
Externí odkaz:
http://arxiv.org/abs/2011.14888
Publikováno v:
Phys. Lett. A 384 (2020) 126729
The integrability nature of a nonparaxial nonlinear Schr\"odinger (NNLS) equation, describing the propagation of ultra-broad nonparaxial beams in a planar optical waveguide, is studied by employing the Painlev\'e singularity structure analysis. Our s
Externí odkaz:
http://arxiv.org/abs/2007.10956
Publikováno v:
Chaos 29, 063121 (2019)
We study the formation and propagation of chirped elliptic and solitary waves in cubic-quintic nonlinear Helmholtz (CQNLH) equation. This system describes nonparaxial pulse propagation in a planar waveguide with Kerr-like and quintic nonlinearities a
Externí odkaz:
http://arxiv.org/abs/1906.02908
Autor:
Tamilselvan, K., Govindarajan, A.
Publikováno v:
In Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena December 2022 165 Part 2
We systematically construct a distinct class of complex potentials including parity-time ($\cal PT$) symmetric potentials for the stationary Schr\"odinger equation by using the soliton and periodic solutions of the four integrable real nonlinear evol
Externí odkaz:
http://arxiv.org/abs/1708.03083
Autor:
Niveatha S, Aruna Raju, Latha R, Tamilselvan K, Karthika Priyadharshini U, Jayamala AK, Graceline Margarat Lydia Shadrack
Publikováno v:
National Journal of Community Medicine, Vol 13, Iss 10 (2022)
Background: Heart rate variability (HRV) is a used to assess autonomic nervous system input to the heart. Studies on the impact of HRV on underweight are limited. Aims/Objectives: To evaluate HRV in age matched young adults of different BMI categor
Externí odkaz:
https://doaj.org/article/975355a3d724469e845c9fc33b6239cf
We obtain a class of elliptic wave solutions of coupled nonlinear Helmholtz (CNLH) equations describing nonparaxial ultra-broad beam propagation in nonlinear Kerr-like media, in terms of the Jacobi elliptic functions and also discuss their limiting f
Externí odkaz:
http://arxiv.org/abs/1510.01462
Autor:
Tamilselvan, K., Thangaraj, P.
Publikováno v:
In Microprocessors and Microsystems February 2020 72
We consider (2+1) and (1+1) dimensional long-wave short-wave resonance interaction systems. We construct an extensive set of exact periodic solutions of these systems in terms of Lam\'e polynomials of order one and two. The periodic solutions are cla
Externí odkaz:
http://arxiv.org/abs/1409.1328