Inversion and magnetic quantum oscillations in symmetric periodic Anderson model
Panch Ram and Brijesh Kumar
Phys. Rev. B 99, 235130 (2019);  
arXiv:1809.04654
Phase diagram of the Hubbard-Kondo lattice model from the variational cluster approximation
Jean Paul L. Faye, Mikhail N. Kiselev, Panch Ram, Brijesh Kumar and David Senechal
Phys. Rev. B 97, 235151 (2018);  
arXiv:1804.00917
Spontaneous dimerization and moment formation in the Hida model of the spin-1 kagome antiferromagnet
Pratyay Ghosh and Brijesh Kumar
Phys. Rev. B 97, 014413 (2018);  
arXiv:1709.07813
Triplon mean-field analysis of an antiferromagnet with degenerate Shastry-Sutherland ground states
Rakesh Kumar and Brijesh Kumar
J. Phy. Commun. 1, 055020 (2017);  
arXiv:1105.3785
Theory of quantum oscillations of magnetization in Kondo insulators
Panch Ram and Brijesh Kumar
Phys. Rev. B 96, 075115 (2017);  
arXiv:1701.02825
Quantum to classical transition in the ground state of a spin-S quantum antiferromagnet
Bimla Danu and Brijesh Kumar
Eur. Phys. J. B 90, 123 (2017);  
arXiv:1610.03826
Level crossings induced by a longitudinal coupling in the transverse field Ising chain
Gregoire Vionnet, Brijesh Kumar and Frederic Mila
Phys. Rev. B 95, 174404 (2017);  
arXiv:1701.08057
Intertwined nematic orders in a frustrated ferromagnet
Yasir Iqbal, Pratyay Ghosh, Rajesh Narayanan, Brijesh Kumar, Johannes Reuther and Ronny Thomale
Phys. Rev. B 94, 224403 (2016);  
arXiv:1608.03751
Plaquette-triplon analysis of a trimerized spin-1 kagome Heisenberg antiferromagnet
Pratyay Ghosh, Akhilesh Kumar Verma and Brijesh Kumar
Phys. Rev. B 93, 014427 (2016);  
arXiv:1507.08038
Effective models for the magnetisation behaviour of Shastry-Sutherland model
Brijesh Kumar and Bimla Danu
arXiv:1408.3529
Edge modes in a frustrated quantum Ising chain
Somenath Jalal and Brijesh Kumar
Phys. Rev. B 90, 184416 (2014);  
arXiv:1407.0201
Quantum Ising dynamics and Majorana-like edge modes in the Rabi lattice model
Brijesh Kumar and Somenath Jalal
Phys. Rev. A 88, 011802(R) (2013);  
arXiv:1210.6922
Exact spin-orbital separation in a solvable model in one dimension
Brijesh Kumar
Phys. Rev. B 87, 195105 (2013);  
arXiv:1205.6436
Ground state properties of linear-exchange quantum spin models
Bimla Danu, Brijesh Kumar and Ramesh V. Pai
EPL 100, 27003 (2012);  
arXiv:1207.0636
Bond-soperators and triplons analysis for spin-S dimer antiferromagnets
Brijesh Kumar
Phys. Rev. B 82, 054404 (2010);  
arXiv:1003.5261
Honeycomb antiferromagnet with a triply degenerate dimer ground state
Rakesh Kumar, Dushyant Kumar and Brijesh Kumar
Phys. Rev. B 80, 214428 (2009);  
arXiv:0906.0258
Emergent radiation in an atom-field system at twice-resonance
Brijesh Kumar
J. Phys. A: Math. Theor 42, 245307 (2009);  
arXiv:0807.0978
Exact solution of the infinite-U Hubbard problem and other models in one dimension
Brijesh Kumar
Phys. Rev. B 79, 155121 (2009);  
arXiv:0812.2977
Canonical representation for electrons and its application to the Hubbard model
Brijesh Kumar
Phys. Rev. B 77, 205115 (2008);  
arXiv:0807.0972
Fourfold degenerate columnar-dimer ground state in square lattice antiferromagnets
Rakesh Kumar and Brijesh Kumar
Phys. Rev. B 77, 144413 (2008);  
arXiv:0803.3306
Substantial magneto-electric coupling near room temperature in Bi2Fe4O9
A. K. Singh, S. D. Kaushik, Brijesh Kumar, P. K. Mishra, A. Venimadhav, V. Siruguri and S. Patnaik
Appl. Phys. Lett. 92, 132910 (2008);  
arXiv:0803.1539
Two-dimensional quantum antiferromagnet with a fourfold degenerate dimer ground state
Alain Gelle, Andreas M. Lauchli, Brijesh Kumar and Frederic Mila
Phys. Rev. B 77, 014419 (2008);  
arXiv:0704.2352
Absence of single particle Bose-Einstein condensation at low densities for bosons with correlated-hopping
Rachel Bendjama, Brijesh Kumar and Frederic Mila
Phys. Rev. Lett. 95, 110434 (2005);  
arXiv:cond-mat/0507010
Multiple-spin exchange models on the checkerboard lattice with an exact two-fold degenerate Shastry-Sutherland ground state
Brijesh Kumar
Phys. Rev. B 71, 174434 (2005);  
arXiv:cond-mat/0410604
Superconductivity in CoO2 layers and the resonating valence bond mean-field theory of the triangular lattice t-J model
Brijesh Kumar and B. Sriram Shastry
Phys. Rev. B 68, 104508 (2003);
Erratum: Phys. Rev. B 69, 059901 (2004);  
arXiv:cond-mat/0304210
Quantum spin models with exact dimer ground states
Brijesh Kumar
Phys. Rev. B 66, 024406 (2002);  
arXiv:cond-mat/0205072
SrCu2(BO3)2: A unique Mott-Hubbard insulator
B. Sriram Shastry and Brijesh Kumar
Prog. Theor. Phys. (supplement) 145, 1 (2002);  
arXiv:cond-mat/0204228
Models exhibiting order by projection
Brijesh Kumar and B. Sriram Shastry
Phys. Rev. B 61, 10716 (2000)