Arun Maurya - Academia.edu (original) (raw)
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Papers by Arun Maurya
Heavy Metals in Plants Physiological to Molecular Approach, May 30, 2022
Heavy Metals in Plants Physiological to Molecular Approach, May 30, 2022
2021 The 4th International Conference on Software Engineering and Information Management, 2021
A significant role is played by visualization of complex projects as graphs with nodes and edges ... more A significant role is played by visualization of complex projects as graphs with nodes and edges in the area of software engineering. A graphical visualization of the whole project is the best way to understand it as a whole and effectively comprehend the dependencies between the participating entities. Graph databases are always easy to understand and work with, when it comes to complex projects. Leveraging the concepts of graph database for software engineering education, plagiarism detection, component evaluation etc. can be accomplished. This paper shows how to make use of a graph database obtained from a Java project for plagiarism detection. Graph databases along with graph algorithms have great applications in the field of software testing, plagiarism detection, partial evaluation and many more.
Journal of Physics: Condensed Matter, 2021
We study the ground state phase diagram of the degenerate two-band Hubbard model at integer filli... more We study the ground state phase diagram of the degenerate two-band Hubbard model at integer fillings as a function of onsite Hubbard interaction U and Hund’s exchange coupling J. We use a variational slave-spin mean field method which allows symmetry broken states to be studied within the computationally less intensive slave-spin mean field formalism. The results show that at half-filling, the ground state at smaller U is a Slater antiferromagnet with substantial local charge fluctuations. As U is increased, the antiferromagnetic (AF) state develops a Heisenberg behavior, finally undergoing a first-order transition to a Mott insulating AF state at a critical interaction U c which is of the order of the bandwidth. Introducing the Hund’s coupling J correlates the system more and reduces U c drastically. At quarter-filling with one electron per site, the ground state at smaller U is paramagnetic metallic. At finite J, as interaction is increased beyond a lower critical value U c1, it g...
Journal of Physics: Condensed Matter, 2021
We study the ground state of the three-band degenerate Hubbard model on a square lattice at integ... more We study the ground state of the three-band degenerate Hubbard model on a square lattice at integer fillings using the variational slave-spin mean field method. At half-filling, the method reproduces the well known result that the ground state is antiferromagnetic (AF) insulating at smaller values of Hubbard onsite repulsion U, while it becomes Mott insulating with Néel AF order at higher U. Away from half-filling, for two particles per site, we show that the model supports a ferromagnetic (FM) metallic state with fully polarized spins at sufficiently large U. The FM state occurs irrespective of the value of Hund’s coupling J. The ferromagnetism at J = 0 can be explained by the Stoner mechanism while that for J > 0 is shown to arise from the superexchange process. At this band filling, the Hund’s coupling J is known to have the Janus-faced effect on electronic correlations where it enhances correlations at smaller U while reducing it at higher U. We show that these two effects are separated by the paramagnetic (PM) to FM transition point. The former effect is obtained at the PM state while the latter occurs in the FM state. The FM phase also occurs for one particle per site but here Hund’s coupling J reduces the effect of electronic correlations at all U.
Heavy Metals in Plants Physiological to Molecular Approach, May 30, 2022
Heavy Metals in Plants Physiological to Molecular Approach, May 30, 2022
2021 The 4th International Conference on Software Engineering and Information Management, 2021
A significant role is played by visualization of complex projects as graphs with nodes and edges ... more A significant role is played by visualization of complex projects as graphs with nodes and edges in the area of software engineering. A graphical visualization of the whole project is the best way to understand it as a whole and effectively comprehend the dependencies between the participating entities. Graph databases are always easy to understand and work with, when it comes to complex projects. Leveraging the concepts of graph database for software engineering education, plagiarism detection, component evaluation etc. can be accomplished. This paper shows how to make use of a graph database obtained from a Java project for plagiarism detection. Graph databases along with graph algorithms have great applications in the field of software testing, plagiarism detection, partial evaluation and many more.
Journal of Physics: Condensed Matter, 2021
We study the ground state phase diagram of the degenerate two-band Hubbard model at integer filli... more We study the ground state phase diagram of the degenerate two-band Hubbard model at integer fillings as a function of onsite Hubbard interaction U and Hund’s exchange coupling J. We use a variational slave-spin mean field method which allows symmetry broken states to be studied within the computationally less intensive slave-spin mean field formalism. The results show that at half-filling, the ground state at smaller U is a Slater antiferromagnet with substantial local charge fluctuations. As U is increased, the antiferromagnetic (AF) state develops a Heisenberg behavior, finally undergoing a first-order transition to a Mott insulating AF state at a critical interaction U c which is of the order of the bandwidth. Introducing the Hund’s coupling J correlates the system more and reduces U c drastically. At quarter-filling with one electron per site, the ground state at smaller U is paramagnetic metallic. At finite J, as interaction is increased beyond a lower critical value U c1, it g...
Journal of Physics: Condensed Matter, 2021
We study the ground state of the three-band degenerate Hubbard model on a square lattice at integ... more We study the ground state of the three-band degenerate Hubbard model on a square lattice at integer fillings using the variational slave-spin mean field method. At half-filling, the method reproduces the well known result that the ground state is antiferromagnetic (AF) insulating at smaller values of Hubbard onsite repulsion U, while it becomes Mott insulating with Néel AF order at higher U. Away from half-filling, for two particles per site, we show that the model supports a ferromagnetic (FM) metallic state with fully polarized spins at sufficiently large U. The FM state occurs irrespective of the value of Hund’s coupling J. The ferromagnetism at J = 0 can be explained by the Stoner mechanism while that for J > 0 is shown to arise from the superexchange process. At this band filling, the Hund’s coupling J is known to have the Janus-faced effect on electronic correlations where it enhances correlations at smaller U while reducing it at higher U. We show that these two effects are separated by the paramagnetic (PM) to FM transition point. The former effect is obtained at the PM state while the latter occurs in the FM state. The FM phase also occurs for one particle per site but here Hund’s coupling J reduces the effect of electronic correlations at all U.