12 citations · 32 across the 13 of their papers we have counts for
13 papers
Force Geometry and Irreversibility in Nonequilibrium Overdamped Dynamics
Erez Aghion, Swetamber Das
Recent experiments have revealed heterogeneous dissipation in optically trapped systems, often anticorrelated with local positional fluctuations, exposing a structural gap in the s…
Geometry- and inertia-limited chaotic growth in classical many-body systems
Swetamber Das
Chaotic instability in many-body systems is commonly quantified by the largest Lyapunov exponent, yet general constraints on its magnitude in classical interacting systems remain p…
Phase space volume preserving dynamics for non-Hamiltonian systems
Swetamber Das, Jason R. Green
Infinitesimal volumes stretch and contract as they coevolve with classical phase space trajectories according to linearized dynamics. Unless these tangent-space dynamics are modifi…
Phase space contraction rate for classical mixed states
Mohamed Sahbani, Swetamber Das, Jason R. Green
Physical systems with non-reciprocal or dissipative forces evolve according to a generalization of Liouville's equation that accounts for the expansion and contraction of phase spa…
Spectral bounds on the entropy flow rate and Lyapunov exponents in differentiable dynamical systems
Swetamber Das, Jason R. Green
Some microscopic dynamics are also macroscopically irreversible, dissipating energy and producing entropy. For many-particle systems interacting with deterministic thermostats, the…
Classical Fisher information for differentiable dynamical systems
Mohamed Sahbani, Swetamber Das, Jason R. Green
Fisher information is a lower bound on the uncertainty in the statistical estimation of classical and quantum mechanical parameters. While some deterministic dynamical systems are…
Maximum speed of dissipation
Swetamber Das, Jason R. Green
We derive statistical-mechanical speed limits on dissipation from the classical, chaotic dynamics of many-particle systems. In one, the rate of irreversible entropy production in t…
Speed limits on classical chaos
Swetamber Das, Jason R. Green
Uncertainty in the initial conditions of dynamical systems can cause exponentially fast divergence of trajectories, a signature of deterministic chaos. Here, we derive a classical…
Density matrix formulation of dynamical systems
Swetamber Das, Jason R. Green
Physical systems that dissipate, mix and develop turbulence also irreversibly transport statistical density. In statistical physics, laws for these processes have a mathematical fo…
Power-law trapping in the volume-preserving Arnold-Beltrami-Childress map
Swetamber Das, Arnd Bäcker
Understanding stickiness and power-law behavior of Poincaré recurrence statistics is an open problem for higher-dimensional systems, in contrast to the well-understood case of syst…
Controlling synchronization in coupled area-preserving maps using stickiness
Swetamber Das
Unidirectionally coupled area-preserving maps with a mixed phase space may show identical synchronization in the sticky neighborhood of the regular islands. We use this fact to dev…
Synchronization, phase slips and coherent structures in area-preserving maps
Swetamber Das, Sasibhusan Mahata, Neelima Gupte
The problem of synchronization of coupled Hamiltonian systems exhibits interesting features due to the non-uniform or mixed nature (regular and chaotic) of the phase space. We stud…
Dynamics of impurities in a three-dimensional volume-preserving map
Swetamber Das, Neelima Gupte
We study the dynamics of inertial particles in three dimensional incompressible maps, as representations of volume preserving flows. The impurity dynamics has been modeled, in the…