21 citations · 39 across the 8 of their papers we have counts for
8 papers
The disordered Dicke model
Pragna Das, Sebastian Wüster, Auditya Sharma
We introduce and study the disordered Dicke model in which the spin-boson couplings are drawn from a random distribution with some finite width. Regarding the quantum phase transit…
Periodically and quasiperiodically driven-anisotropic Dicke model
Pragna Das, Devendra Singh Bhakuni, Lea F. Santos +1
We analyze the anisotropic Dicke model in the presence of a periodic drive and under a quasiperiodic drive. The study of drive-induced phenomena in this experimentally accesible mo…
Phase transitions of the anisotropic Dicke model
Pragna Das, Devendra Singh Bhakuni, Auditya Sharma
We systematically analyze the various phase transitions of the anisotropic Dicke model that is endowed with both rotating and counter-rotating light-matter couplings. In addition t…
Phase transitions of the Dicke model: a unified perspective
Pragna Das, Auditya Sharma
The Dicke model exhibits a variety of phase transitions. The quantum phase transition from the normal phase to the super-radiant phase is marked by a dramatic change in the scaling…
Parameter estimation for optimal path planning in internal transportation
Pragna Das, Lluıs Ribas-Xirgo
The costs incurred in a mobile robot (MR) change due to change in physical and environmental factors. Usually, there are two approaches to consider these costs, either explicitly m…
An Ontology to Support Collective Intelligence in Decentralised Multi-Robot Systems
Pragna Das, Vincent Hilaire, Lluis Ribas-Xirgo
In most multi-robot systems, conditions of the floor, battery and mechanical parts are important and impact cost-efficiency. The costs are generally interpreted through performance…
Adaptive Cost Coefficient Identification for Planning Optimal Operation in Mobile Robot based Internal Transportation
Pragna Das, Lluis Ribas-Xirgo
Decisions in automated logistic systems can be improved based on knowledge of real-time state of individual parts and also environmental factors. These knowledge can be obtained th…
A Study of Time-varying Cost Parameter Estimation Methods in Automated Transportation Systems based on Mobile Robots
Pragna Das, Lluís Ribas Xirgo
Control of systems of automated guided vehicles involves action planning at many levels. For efficient control of these systems, accurate estimation of cost parameters (speed, ener…