ICTS

Research Interests

• Non-equilibrium Quantum Dynamics
• Ergodicity in Quantum Systems and its Breaking
• Quantum Chaos
• Random Matrix Theory

Preprints

Publications

1. Imprints of information scrambling on eigenstates of a quantum chaotic system.
   Bikram Pain, Ratul Thakur, Sthitadhi Roy.
   Phys. Rev. B 114, L140302 (2026) (Letter)
2. Robust correlation-induced localization under time-reversal symmetry breaking.
   Bikram Pain, Sthitadhi Roy, Jens H. Bardarson, Ivan M. Khaymovich.
   Phys. Rev. Research 8, L032037 (2026) (Letter)
3. Krylov-space anatomy and spread complexity of a disordered quantum spin chain.
   Bikram Pain, David E. Logan, Sthitadhi Roy.
   Phys. Rev. B 113, 214205 (2026)
4. Logarithmic entanglement light cone from eigenstate correlations in the many-body localized phase.
   Ratul Thakur, Bikram Pain, Sthitadhi Roy.
   Phys. Rev. B 111, 174206 (2025)
5. Entanglement dynamics and eigenstate correlations in strongly disordered quantum many-body systems.
   Bikram Pain, Sthitadhi Roy.
   Phys. Rev. B 110, 224201 (2024)
6. The connection between Hilbert-space return probability and real-space autocorrelations in quantum spin chains.
   Bikram Pain, Kritika Khanwal, Sthitadhi Roy.
   Phys. Rev. B 108, L140201 (2023) (Letter)