The African Review of Physics (2020) 15 Special Issue on Plasma Physics: 005
We have studied the Rogue wave existence and propagation in Ion-acoustic (IA) mode for the highly... more We have studied the Rogue wave existence and propagation in Ion-acoustic (IA) mode for the highly energetic case using kappa distributed electrons in accordance with the Korteweg-de Vries (KdV) equation that is modified KdV and extended KdV equation. We have used reductive perturbation method. We first examined the linear dispersive behaviour in Ionacoustic mode. Obtaining the Nonlinear Schrödinger equation, we simulated Rogue wave and examined dynamics of it, and its response to small perturbations. We discussed the possibility of generation of Rogue wave as well as the stability of this against various parameters like wave number, spatial and time component. This study is quite helpful for understanding some prominent points of the nonlinearity of IA waves and Rogue wave generation of the highly energetic case in space plasma also in a laboratory plasma.
General Relativity and non-galactic cosmology , 2020
We will first develop Einstein field equation with cosmological constant using Riemannian geometr... more We will first develop Einstein field equation with cosmological constant using Riemannian geometry. Now I considered that cosmological constant is associated with the vacuum energy density of particle physics model. Using Euclidean quantum gravity of path integral formalism and use of Robertson Walker metric(RW) I calculate the contribution of matter density to the fluctuating metric. This method rather leads to the observed cosmological constant without any need of fine tuning in the gravity and the particle physics model. this straightforward approach is very much useful and it is justified for all points of view.
The African Review of Physics (2020) 15 Special Issue on Plasma Physics: 005
We have studied the Rogue wave existence and propagation in Ion-acoustic (IA) mode for the highly... more We have studied the Rogue wave existence and propagation in Ion-acoustic (IA) mode for the highly energetic case using kappa distributed electrons in accordance with the Korteweg-de Vries (KdV) equation that is modified KdV and extended KdV equation. We have used reductive perturbation method. We first examined the linear dispersive behaviour in Ionacoustic mode. Obtaining the Nonlinear Schrödinger equation, we simulated Rogue wave and examined dynamics of it, and its response to small perturbations. We discussed the possibility of generation of Rogue wave as well as the stability of this against various parameters like wave number, spatial and time component. This study is quite helpful for understanding some prominent points of the nonlinearity of IA waves and Rogue wave generation of the highly energetic case in space plasma also in a laboratory plasma.
General Relativity and non-galactic cosmology , 2020
We will first develop Einstein field equation with cosmological constant using Riemannian geometr... more We will first develop Einstein field equation with cosmological constant using Riemannian geometry. Now I considered that cosmological constant is associated with the vacuum energy density of particle physics model. Using Euclidean quantum gravity of path integral formalism and use of Robertson Walker metric(RW) I calculate the contribution of matter density to the fluctuating metric. This method rather leads to the observed cosmological constant without any need of fine tuning in the gravity and the particle physics model. this straightforward approach is very much useful and it is justified for all points of view.
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Papers by Suman Dey
Now I considered that cosmological constant is associated with the vacuum energy density of particle physics model. Using Euclidean quantum gravity of path integral formalism and use of Robertson Walker metric(RW) I calculate the contribution of matter density to the fluctuating metric. This method rather leads to the observed cosmological constant without any need of fine tuning in the gravity and the particle physics model. this straightforward approach is very much useful and it is justified for all points of view.
Now I considered that cosmological constant is associated with the vacuum energy density of particle physics model. Using Euclidean quantum gravity of path integral formalism and use of Robertson Walker metric(RW) I calculate the contribution of matter density to the fluctuating metric. This method rather leads to the observed cosmological constant without any need of fine tuning in the gravity and the particle physics model. this straightforward approach is very much useful and it is justified for all points of view.