22 citations · 48 across the 7 of their papers we have counts for
6 papers
A Massive Field-Theoretic Model for Hodge Theory
S. Krishna, R. Kumar, R. P. Malik
Within the framework of Becchi-Rouet-Stora-Tyutin (BRST) formalism, we show that the four -dimensional (4D) massive Abelian 2-form gauge theory (without any interaction with…
Triplon mean-field analysis of an antiferromagnet with degenerate Shastry-Sutherland ground states
Rakesh Kumar, Brijesh Kumar
We look into the quantum phase diagram of a spin- antiferromagnet on the square lattice with degenerate Shastry-Sutherland ground states, for which only a schematic ph…
Honeycomb antiferromagnet with a triply degenerate dimer ground state
Rakesh Kumar, Dushyant Kumar, Brijesh Kumar
We present an antiferromagnetic quantum spin-1/2 model on honeycomb lattice. It has two parts, one of which is the usual nearest-neighbor Heisenberg model. The other part is a cert…
Anomalous magnetic and transport properties of La(0.8-x)Eu(x)Sr0.2MnO3 (0.04 l.e. x l.e. 0.36) compounds
Rakesh Kumar, C. V. Tomy, P. L. Paulose +2
Anomalous magnetic and transport properties observed in the La0.8-xEuxSr0.2MnO3 (0.04 l.e x l.e. 0.36) compounds are presented in this paper. The Curie temperature (TC) decreases f…
Fourfold degenerate columnar-dimer ground state in square lattice antiferromagnets
Rakesh Kumar, Brijesh Kumar
We construct and study two frustrated quantum spin-1/2 models on square lattice, which are like the antiferromagnetic - model with some additional four-spin exchange inte…
Magnetization and heat capacity studies of double perovskite compounds Ba2SmRuO6 and Ba2DyRuO6
Rakesh Kumar, C. V. Tomy, R. Nagarajan +2
Here we report the magnetic and heat capacity studies of the double perovskite com-pounds Ba2SmRuO6 and Ba2DyRuO6. Antiferromagnetic transitions are inferred at 54 K and 47 K in Ba…