Faculty Profile

 
Name : Brijesh  Kumar
Designation : Assistant Professor
Centre :
School : Physical Sciences
Room No : 122
Off. Phone : 91-11-2673 8805
Residence :
Email : bkumar@mail.jnu.ac.in   brij1211@yahoo.co.in
Web Address : http://www.jnu.ac.in/Faculty/bkumar/

Qualifications

PhD (2003, Indian Institute of Science, Bangalore) 
                                    

Areas of Interest/Specialization

Theoretical Condensed Matter Physics 
                                    

Experience

Assistant Professor: JNU New Delhi (2005 - presently)
Post-Doc: Ecole Polytechnique Federale de Lausanne, Switzerland (2003-05) 
                                    

Awards & Honours

INSA Medal for Young Scientists (2009)
Junior Associate, The Abdus Salam ICTP, Trieste, Italy (2009-2014)
Associate, Indian Academy of Sciences (2006-2011) 
                                    

International Collaboration/Consultancy

International workshop on "Emergence of New States of Matter in Magnetic Systems and Beyond" in ICTP, Trieste, Italy (5-9 July 2010). Jointly organized with F. Becca (Italy), M. Kiselev (Italy) and F. Mila (Switzerland). 
                                    

Best Peer Reviewed Publications (upto 5)
1) "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)

2) "SrCu2(BO3)2 : A unique Mott-Hubbard insulator", B. Sriram Shastry and Brijesh Kumar, Prog. Theor. Phys. Supplement 145, 1 (2002)

3) "Quantum spin models with exact dimer ground states", Brijesh Kumar, Phys. Rev. B 66, 024406 (2002)

4) "Exact solution of the infinite-U Hubbard problem and other models in one dimension", Brijesh Kumar, Phys. Rev. B 79, 155121 (2009)

5) "Canonical representation for electrons and its application to the Hubbard model", Brijesh Kumar, Phys. Rev. B 77, 205115 (2008) 
                                  

Recent Peer Reviewed Journals/Books (upto 3)

1) "Bond-operators and triplon analysis for spin-S dimer antiferromagnets", Brijesh Kumar, Phys. Rev. B 82, 054404 (2010)

2) "Honeycomb antiferromagnet with a triply degenerate dimer ground state", Rakesh Kumar, Dushyant Kumar and Brijesh Kumar, Phys. Rev. B 80, 214428 (2009)

3) "Emergent radiation in an atom-field system at twice-resonance", Brijesh Kumar, J. Phys. A: Math. Theor. 42, 245307 (2009) 
                                    

Patents (if any)
NA