Results 21 to 30 of about 1,087,074 (217)

Pemodelan Tsunami Sederhana dengan Menggunakan Persamaan Differensial Parsial

open access: yesIndonesian Journal of Applied Physics, 2018
One way to solve fluid dynamics problem is using partial differential equation. By using Taylor expansion, fluid dynamics can be applied simply. For the example is tsunami wave.
Indriati Retno Palupi   +3 more
doaj   +1 more source

Quantum geometrodynamics of the Bianchi IX model in extended phase space [PDF]

open access: yes, 1998
A way of constructing mathematically correct quantum geometrodynamics of a closed universe is presented. The resulting theory appears to be gauge-noninvariant and thus consistent with the observation conditions of a closed universe, by that being ...
Barvinsky A. O.   +3 more
core   +2 more sources

Evaluation of the performance of fractional evolution equations based on fractional operators and sensitivity assessment

open access: yesResults in Physics, 2023
In this article, the nonlinear fractional Kudryashov’s equation and the space–time fractional nonlinear Tzitzeica–Dodd–Bullough (TDB) equation are solved using the new auxiliary equation method, which yields innovative analytical solutions using β and M ...
Riaz Ur Rahman   +5 more
doaj   +1 more source

Exploring Invariance in Images through One-way Wave Equations

open access: yes, 2023
This is an improvement version, which fuses some parts from the preliminary work arXiv:2305 ...
Chen, Yinpeng   +7 more
openaire   +2 more sources

Weakly nonparaxial effects on the propagation of (1+1)D spatial solitons in inhomogeneous Kerr media [PDF]

open access: yes, 2005
The widely-used approach to study the beam propagation in Kerr media is based on the slowly varying envelope approximation (SVEA) which is also known as the paraxial approximation.
Groesen, E. van   +2 more
core   +3 more sources

Decay rates for the damped wave equation on the torus [PDF]

open access: yes, 2012
We address the decay rates of the energy for the damped wave equation when the damping coefficient $b$ does not satisfy the Geometric Control Condition (GCC). First, we give a link with the controllability of the associated Schr\"odinger equation.
Anantharaman, Nalini   +2 more
core   +4 more sources

Different forms of optical soliton solutions to the Kudryashov’s quintuple self-phase modulation with dual-form of generalized nonlocal nonlinearity

open access: yesResults in Physics, 2023
In this paper, the exact soliton solutions and other exact solutions for nonlinear Schrodinger’s equation having Kudryashov’s quintuple power law of refractive index together with dual form of generalized nonlocal nonlinearity are studied.
Ruijuan Li   +5 more
doaj   +1 more source

One-way acoustic beam splitting in spatial four-waveguide couplers designed by adiabatic passage

open access: yesNew Journal of Physics, 2023
In this work, we introduce quantum-mechanical adiabatic passage into the design of spatial acoustic four-waveguide (WG) couplers. Thanks to the agreement in form between the Schrödinger equation in quantum mechanics and the coupled-mode equation of ...
Shuai Tang   +6 more
doaj   +1 more source

Unique Conservative Solutions to a Variational Wave Equation [PDF]

open access: yes, 2014
Relying on the analysis of characteristics, we prove the uniqueness of conservative solutions to the variational wave equation $u_{tt}-c(u) (c(u)u_x)_x=0$. Given a solution $u(t,x)$, even if the wave speed $c(u)$ is only H\"older continuous in the $t$-$x$
Bressan, Alberto   +2 more
core   +2 more sources

Scattering of relativistic spinless particles within the Feshbach-Villars formalism

open access: yesHeliyon, 2022
We consider the relativistic quantum scattering of spinless particles in one-spatial dimension using the Feshbach-Villars formalism. We construct the general form of the scattering matrix, for symmetric and non-symmetric potentials, based on the symmetry
Y. Chargui, A. Dhahbi, A.R. Karam
doaj   +1 more source

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