195 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Raman Research InstituteIN29 papers
- Indian Institute of Technology JodhpurIN27 papers
- Manipal Academy of Higher EducationIN19 papers
- Indian Institute of Science BangaloreIN13 papers
- Jaypee Institute of Information TechnologyIN13 papers
- National Institute for Theoretical PhysicsZA11 papers
- University of KwaZulu-NatalZA9 papers
- Bose InstituteIN7 papers
- Chennai Mathematical InstituteIN6 papers
- Institute of Mathematical SciencesIN6 papers
- University of WaterlooCA6 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ5 papers
10 papers · 1 filter
Unconventional quantum criticality in a non-Hermitian extended Kitaev chain
S Rahul, Nilanjan Roy, Ranjith R Kumar +2
We investigate the nature of quantum criticality and topological phase transitions near the critical lines obtained for the extended Kitaev chain with next nearest neighbor hopping…
Topological phase transition between non-high symmetry critical phases and curvature function renormalization group
Ranjith R Kumar, Y R Kartik, Sujit Sarkar
The interplay between topology and criticality has been a recent interest of study in condensed matter physics. A unique topological transition between certain critical phases has…
Signatures of topological phase transition on a quantum critical line
Ranjith R Kumar, Nilanjan Roy, Y R Kartik +2
Recently topological states of matter have witnessed a new physical phenomenon where both edge modes and gapless bulk coexist at topological quantum criticality. The presence and a…
Topological quantum phase transitions and criticality in a longer-range Kitaev chain
Y R Kartik, Ranjith R Kumar, S Rahul +2
In an attempt to theoretically investigate the quantum phase transition and criticality in topological models, we study Kitaev chain with longer-range couplings (finite number of n…
Multi-critical topological transition at quantum criticality
Ranjith R Kumar, Y R Kartik, S Rahul +1
The investigation and characterization of topological quantum phase transition between gapless phases is one of the recent interest of research in topological states of matter. We…
Majorana Zero Modes and Bulk-Boundary Correspondence at Quantum Criticality
S Rahul, Ranjith R Kumar, Y R Kartik +1
Majorana zero modes are well studied in the gapped phases of topological systems. We investigate Majorana zero modes at the topological quantum criticality in one dimensional topol…
Emergence of a new symmetry class for Bogoliubov-de Gennes (BdG) Hamiltonians: Expanding ten-fold symmetry classes
Ranjith Kumar R, Sujit Sarkar
Symmetry plays an important role in the topological states of quantum matter. Cartan found three symmetry classes, Altland and Zirnbauer extended it to the ten-fold symmetry class…
An Interplay of Topology and Quantized Geometric Phase for two Different Symmetry-Class Hamiltonians
Rahul S, Ranjith Kumar R, Y R Kartik +2
Study of symmetry, topology and geometric phase can reveal many new and interesting results on the topological states of matter. Here we present a completely new and interesting re…
A Study of Topological Quantum Phase Transition and Majorana Localization Length for the Interacting Helical Liquid System
Dayasindhu Dey, Sudip Kumar Saha, P. Singha Deo +2
We consider a helical spin liquid system which shows majorana fermion modes at the edge. The interaction between the quasiparticles in this system induces phase transition, Majoran…
Quantum spin pumping at fractionally quantized magnetization state for a system with competing exchange interactions
Sujit Sarkar, C. D. Hu
We study the quantum spin pumping of an antiferromagnetic spin-1/2 chain with competing exchange interactions. We show that spatially periodic potential modulated in space and time…