REsearch activities

My primary research interest is the study of fundamental interactions using analytical, numerical, and quantum-computational methods, with particular emphasis on the strong interaction described by quantum chromodynamics.

An important part of my earlier research contributed to the development of the prepotential formulation of lattice gauge theories, a Hamiltonian reformulation based on Schwinger-boson representations. This formulation provides local gauge-invariant variables and offers a systematic way to eliminate gauge redundancy and resolve the overcompleteness associated with loop degrees of freedom.

Coupling these gauge-invariant variables to dynamical staggered fermions leads to the Loop-String-Hadron (LSH) formulation. The LSH framework works directly with physical degrees of freedom and provides a useful route to classical and quantum simulation of non-Abelian lattice gauge theories.

Our current work spans:

• Hamiltonian formulations of SU(2) and SU(3) lattice gauge theories;

• digital and analog quantum simulation of gauge theories;

• quantum algorithms and hardware-aware implementations on quantum processors;

• tensor-network and other classical benchmarking methods;

• string breaking and real-time hadronic dynamics;

• eigenstate thermalization and quantum many-body dynamics;

• measurement and entanglement dynamics in lattice gauge theories; and

• strongly correlated and topological quantum systems.

A recent focus is the implementation and validation of non-Abelian gauge-theory dynamics on large quantum processors. Our work combines gauge-invariant encodings, quantum circuits, real quantum hardware, and complementary classical approaches such as tensor-network and Pauli-propagation calculations.

My publications can be found in Google-Scholar or Inspire-hep.

Recent highlights

August 2026 — IBS School on Quantum Computation for Quantum Field Theory
Lecturer at the IBS Science Culture Center, Daejeon, Republic of Korea, for the school “From Hamiltonian QFT to Quantum Simulation.”

July 2026 — IISc–IIT Kanpur seminar series
Invited talk: Non-Abelian gauge theories on quantum computers — from encoding physical degrees of freedom to observing real-time dynamics.

June 2026 — ETH Zürich
Invited seminar: Quantum Simulation of Non-Abelian Hadron Dynamics on a 60-Site Lattice Using IBM Quantum Hardware.

April 2026 — Eigenstate thermalization in non-Abelian gauge theory
Publication in Physical Review D on eigenstate thermalization in a (1+1)-dimensional SU(2) lattice gauge theory coupled to dynamical fermions.

February 2026 — Large-scale quantum simulation of hadron dynamics
Reported robust and coherent non-Abelian hadron dynamics on IBM quantum hardware using the Loop-String-Hadron formulation, with results benchmarked against complementary classical methods.

February 2026 — SSQDT 2026
Convenor of the Susegad Symposium on Quantum Dynamics and Thermalization, held at BITS Pilani, K K Birla Goa Campus.

February 2026 — Young Investigator Award
Received the Young Investigator Award under the Director’s Awards, BITS Pilani, K K Birla Goa Campus.

NEWS/Highlights from our group

One or more JRF position is open to work on the DST-SERB funded project "Quantum Information and Quantum Simulation with Trapped Rydberg Atoms : Gateway to a New Technological Era " with Prof. Raka Dasgupta as PI and IR as co-PI. Anyone interested may contact any of the PI and co-PI.

Collaborators on various projects

Teaching

“Nothing in life is to be feared, it is only to be understood now is the time to understand more, so that we may fear less.”

-Marie Curie

advocating for DIVERSITY AND Inclusion

Activities/interests apart from PHYSICS

contact me

REsearch activities