38 citations · 147 across the 10 of their papers we have counts for
12 papers
Flat-band quantum geometry from embedded quench dynamics
Ilia Komissarov, Daniel E. Sheehy, Ahana Chakraborty
Quantum geometry underlies a wide range of correlated phenomena in electronic systems, yet accessing the geometry of individual bands remains experimentally challenging. Advances i…
Theory of post-selected entanglement transitions in monitored bosons
Ilia Komissarov, Emanuele G. Dalla Torre, Ahana Chakraborty
Entanglement phase transitions driven by quantum measurements have emerged as a central paradigm in open quantum many-body physics. Such phase transitions are well established for…
Charge and Entanglement Criticality in a U(1)-Symmetric Hybrid Circuit of Qubits
Ahana Chakraborty, Kun Chen, Aidan Zabalo +2
We study critical properties of the entanglement and charge-sharpening measurement-induced phase transitions in a non-unitary quantum circuit evolving with a U(1) conserved charge.…
Light-Driven Transitions in Quantum Paraelectrics
Zekun Zhuang, Ahana Chakraborty, Premala Chandra +2
Motivated by recent experiments on pump-induced polar ordering in the quantum paraelectric SrTiO, we study a driven phonon system close to a second order phase transition. Anal…
Controlling Collective Phenomena Via the Quantum State of Interaction-Mediators: Changing the Criticality of Photon-Mediated Superconductivity Via Fock States of Light
Ahana Chakraborty, Michele Pini, Martina S. Zündel +1
How are two-body scattering and the resulting collective phenomena affected by preparing the mediator of interactions in different quantum states? This question has recently become…
Many-body localized to ergodic transitions in a system with correlated disorder
Abhisek Samanta, Ahana Chakraborty, Rajdeep Sensarma
We study the transition from a many-body localized phase to an ergodic phase in spin chain with correlated random magnetic fields. Using multiple statistical measures like gap stat…
Renyi Entropy of Interacting Thermal Bosons in Large Approximation
Ahana Chakraborty, Rajdeep Sensarma
Using a Wigner function based approach, we study the Renyi entropy of a subsystem of a system of Bosons interacting with a local repulsive potential. The full system is assumed…
Long-range photon fluctuations enhance photon-mediated electron pairing and superconductivity
Ahana Chakraborty, Francesco Piazza
Recently, the possibility of inducing superconductivity for electrons in two dimensional materials has been proposed via cavity-mediated pairing. The cavity-mediated electron-elect…
Memories of initial states and density imbalance in dynamics of interacting disordered systems
Ahana Chakraborty, Pranay Gorantla, Rajdeep Sensarma
We study the dynamics of one and two dimensional disordered lattice bosons/fermions initialized to a Fock state with a pattern of and particles on and sites.…
Non-equilibrium Dynamics of Renyi Entropy for Bosonic Many-Particle Systems
Ahana Chakraborty, Rajdeep Sensarma
We propose a new field theoretic method for calculating Renyi entropy of a sub-system of many interacting Bosons without using replica methods. This method is applicable to dynamic…
Non-Equilibrium Field Theory for Dynamics Starting from Arbitrary Athermal Initial Conditions
Ahana Chakraborty, Pranay Gorantla, Rajdeep Sensarma
Schwinger Keldysh field theory is a widely used paradigm to study non-equilibrium dynamics of quantum many-body systems starting from a thermal state. We extend this formalism to d…
Power law tails and non Markovian dynamics in open quantum systems: An exact solution from Keldysh field theory
Ahana Chakraborty, Rajdeep Sensarma
The Born-Markov approximation is widely used to study dynamics of open quantum systems coupled to external baths. Using Keldysh formalism, we show that the dynamics of a system of…