29 citations · 74 across the 8 of their papers we have counts for
9 papers
Single and coupled quantum van der Pol oscillators: Wigner-function dynamics, exact qutrit solutions, and synchronization
Rohitashwa Chattopadhyay, Vinayak Pendse, Shamik Gupta
We study quantum van der Pol oscillator in which single-photon pumping competes with a nonlinear two-photon dissipative channel to produce a quantum limit cycle, and the question o…
A Mathematical Framework for Misinformation Propagation in Complex Networks: Topology-Dependent Distortion and Control
Saikat Sur, Rohitashwa Chattopadhyay, Jens Christian Claussen +1
Misinformation is pervasive in natural, biological, social, and engineered systems, yet its quantitative characterization remains challenging. We develop a general mathematical fra…
Kuramoto model subject to subsystem resetting: How resetting a part of the system may synchronize the whole of it
Rupak Majumder, Rohitashwa Chattopadhyay, Shamik Gupta
We introduce and investigate the effects of a new class of stochastic resetting protocol called subsystem resetting, whereby a subset of the system constituents in a many-body inte…
Amplitude death in coupled replicator map lattice: averting migration dilemma
Shubhadeep Sadhukhan, Rohitashwa Chattopadhyay, Sagar Chakraborty
Populations composed of a collection of subpopulations (demes) with random migration between them are quite common occurrences. The emergence and sustenance of cooperation in such…
Effect of chaotic agent dynamics on coevolution of cooperation and synchronization
Rohitashwa Chattopadhyay, Shubhadeep Sadhukhan, Sagar Chakraborty
The effect of the chaotic dynamical states of the agents on the coevolution of cooperation and synchronization in a structured population of the agents remains unexplored. With a v…
Cooperators overcome migration dilemma through synchronization
Shubhadeep Sadhukhan, Rohitashwa Chattopadhyay, Sagar Chakraborty
Synchronization, cooperation, and chaos are ubiquitous phenomena in nature. In a population composed of many distinct groups of individuals playing the prisoner's dilemma game, the…
Finding Hannay angle in dissipative oscillatory systems via conservative perturbation theory
Rohitashwa Chattopadhyay, Tirth Shah, Sagar Chakraborty
Usage of a Hamiltonian perturbation theory for a nonconservative system is counterintuitive and in general, a technical impossibility by definition. However, the time-independent d…
Equivalent linearization finds nonzero frequency corrections beyond first order
Rohitashwa Chattopadhyay, Sagar Chakraborty
We show that the equivalent linearization technique, when used properly, enables us to calculate frequency corrections of weakly nonlinear oscillators beyond the first order in non…
Conservative perturbation theory for nonconservative systems
Tirth Shah, Rohitashwa Chattopadhyay, Kedar Vaidya +1
In this paper, we show how to use canonical perturbation theory for dissipative dynamical systems capable of showing limit cycle oscillations. Thus, our work surmounts the hitherto…