Publication News

Realising Nevill Mott's dream for the repulsion driven metal-insulator transition.
AUG 2026We provide an explanation of the Mott transition in the 2D extended Hubbard model as a confinement-deconfinement transition of holes and doubly occupied sites.
Frustrating the Kondo effect might hold the key to the Mott MIT in ∞ dimensions
NOV 2023We provide a Hamiltonian-based explanation of the DMFT-based phenomenology of the infinite dimensional Hubbard model, obtaining novel insights on the Mott MIT in the process.
Can entanglement scaling lead to universality across various metals or insulators?
MAY 2023In a work that appeared recently at New Journal of Physics, Patra et al classify various emergent phases of matter in terms of entanglement measures.
A Simple Graph-Theoretic Construct Outlines Much of the Physics of the Multichannel Kondo Effect!
MAY 2023In this work, we elucidate the importance of ground-state degeneracy and frustration in determining the physics of the multichannel Kondo model.
Can space emerge from quantum mechanics? We demonstrate this in a simple model of fermions!
FEB 2023We show the emergence of an additional dimension arising out of the scaling of multipartite entanglement upon applying RG transformations on 2D noninteracting electrons placed on a torus.
Our recent work on entanglement of topologically ordered systems has been published in Phys. Rev. A
JUN 2022In this work, we investigate the nature of the general \(N-\)partite information and quantum correlation of a topologically ordered ground state.
Our work on the entanglement of the doped 2D Hubbard model got published in J. Phys. Cond. Mat.
MAY 2022In this work, we cast the renormalization group flows of the 2D Hubbard model in terms of entanglement evolution, revealing holographic features along the way.
Our work on the single-channel Kondo problem has been published in Phys. Rev. B
MAR 2022We analyze the single-channel Kondo model using the recently developed unitary renormalization-group (URG) method and obtain a comprehensive understanding of the Kondo screening cloud.
Our work on the Cooper pair insulator has been published in Phys. Rev. B
NOV 2021We present a microscopic derivation of the Cooper-pair insulator (CPI), a topologically ordered counterpart of the $$s-$$wave superconductor.

Updates

Welcome, Aashish, to EPQM@IISER Kolkata!
JUN 2023
Congratulations, Abhirup, on presenting your work at PP65@IISER Kolkata!
JUN 2023
Congratulations, Siddhartha Patra, on receiving your Ph.D at the 10th convocation of IISER Kolkata!
JUN 2023
Congratulations Debraj, on your first poster presentation (at DPS Day 2023) as part of EPQM!
MAR 2023
Congratulations Abhirup, on winning a Best Poster award at DPS Day 2023!
MAR 2023
We welcome Arnabesh Samadder, our new PhD student, into the group.
JAN 2023
Siddhartha Patra has successfully defended his thesis.
SEP 2022
We welcome Debraj Debata, our new IPhD student, into the group.
JUL 2022