48 citations · 537 across the 51 of their papers we have counts for
5 papers · 1 filter
Variational approximations using Gaussian ansatz, false instability, and its remedy in nonlinear Schrödinger lattices
Rahmi Rusin, Rudy Kusdiantara, Hadi Susanto
We study the fundamental lattice solitons of the discrete nonlinear Schrödinger (DNLS) equation and their stability via a variational method. Using a Gaussian ansatz and comparing…
Justification of the Lugiato-Lefever model from a damped driven equation
Fiki T. Akbar, Bobby E. Gunara, Hadi Susanto
The Lugiato-Lefever equation is a damped and driven version of the well-known nonlinear Schrödinger equation. It is a mathematical model describing complex phenomena in dissipative…
Static Black Holes in Higher Dimensional Einstein-Skyrme Models
Bobby E. Gunara, Fiki T. Akbar, Rizqi Fadli +2
In this paper we construct a class of hairy static black holes of higher dimensional Einstein-Skyrme theories with the cosmological constant whose scalar is an val…
Local and Global Existence of Solutions to Scalar Equations on Spatially Flat Universe as a Background with Non-minimal Coupling
Fiki T. Akbar, Bobby E. Gunara, Muhammad Iqbal +1
We prove the wellposedness of scalar wave equations on spatially flat universe as a background with nonminimal coupling with the scalar potential turned on by introducing the -o…
Theory and Numerical Modelling of Parity-Time Symmetric Structures in Photonics: Introduction and Grating Structures in One Dimension
Sendy Phang, Trevor M. Benson, Hadi Susanto +4
A class of structures based on PT PT-symmetric Bragg gratings in the presence of both gain and loss is studied. The basic concepts and properties of parity and time reversal in one…