Infinite-dimensional symmetry group, Kac-Moody-Virasoro algebras and integrability of Kac-Wakimoto equation

Article Physics, Multidisciplinary

In-silico investigation of silicon-doped 2D-activated carbon sheet

Ratnesh Kumar et al.

Summary: This study used density functional theory (DFT) calculations to investigate the structure and electronic properties of silicon-doped activated carbon sheets. The results showed that the silicon-doped sheets had lower binding energy compared to the pristine sheets, and there were significant changes in the electronic structure. These findings are important for understanding the characteristics of activated carbon sheets and their potential applications.

PRAMANA-JOURNAL OF PHYSICS (2022)

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Article Computer Science, Interdisciplinary Applications

Symmetry reductions, generalized solutions and dynamics of wave profiles for the (2+1)-dimensional system of Broer-Kaup-Kupershmidt (BKK) equations

Sachin Kumar et al.

Summary: In this article, the (2+1)-dimensional system of Broer-Kaup-Kupershmidt (BKK) equations describing non-linear and long gravity waves in a dispersive system is investigated using the Lie group method. Exact closed form solutions are obtained and physically interpreted, providing significant insights into the propagation of gravity waves.

MATHEMATICS AND COMPUTERS IN SIMULATION (2022)

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Article Physics, Multidisciplinary

THz pulses from optically excited Fe-, Pt- and Ta-based spintronic heterostructures

Sandeep Kumar et al.

Summary: Spintronic heterostructures are considered as the new generation terahertz sources due to their capability of producing high power and broadband THz radiation. By using optically excited bi- and tri-layer combinations of ferromagnetic and non-magnetic thin films, the efficiency and broadband spectrum of THz emitters can be optimized. The inverse spin Hall effect in the heavy metal layer of the heterostructure is primarily responsible for generating THz pulses.

PRAMANA-JOURNAL OF PHYSICS (2021)

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Article Physics, Multidisciplinary

Invariance analysis, optimal system, closed-form solutions and dynamical wave structures of a (2+1)-dimensional dissipative long wave system

Sachin Kumar et al.

Summary: By using the one-parameter Lie group of transformations method, abundant exact invariant solutions are obtained for a (2+1)-dimensional dissipative long wave system, including various wave patterns, reduced to nonlinear ordinary differential equations. The obtained closed-form solutions exhibit dynamic behaviors such as multi-wave solitons, bell-shaped structures, and wave-wave interactions.

PHYSICA SCRIPTA (2021)

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Article Physics, Multidisciplinary