14 citations · 28 across the 7 of their papers we have counts for
4 papers · 1 filter
Entanglement Entropy from Correlation Functions of Scalar Fields in and out of Equilibrium
Mrinal Kanti Sarkar, Saranyo Moitra, Rajdeep Sensarma
We show that odd order Rényi entropies of a system of interacting scalar fields can be calculated as the free energy of replicas of the system with additional q…
Signature of Criticality in Angular Momentum Resolved Entanglement of Scalar Fields in
Mrinal Kanti Sarkar, Saranyo Moitra, Rajdeep Sensarma
The scaling of entanglement entropy with subsystem size fails to distinguish between gapped and gapless ground state of a scalar field theory in dimensions. We show that the…
Building Entanglement Entropy out of Correlation Functions for Interacting Fermions
Saranyo Moitra, Rajdeep Sensarma
We provide a prescription to construct Rényi and von Neumann entropy of a system of interacting fermions from a knowledge of its correlation functions. We show that Rényi entanglem…
Entanglement Entropy of Fermions from Wigner Functions: Excited States and Open Quantum Systems
Saranyo Moitra, Rajdeep Sensarma
We formulate a new ``Wigner characteristics'' based method to calculate entanglement entropies of subsystems of Fermions using Keldysh field theory. This bypasses the requirements…