5 papers
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…
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 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…