Nonlinear dynamics and energy transfer for two rotating dipoles in an external field: A three-dimensional analysis

Abstract

We investigate the structure and the nonlinear dynamics of two rigid polar rotors coupled through the dipole-dipole interaction in an external homogeneous electric field. In the field-free stable head-tail configuration, an excess energy is provided to one of the dipoles, and we explore the resulting three-dimensional classical dynamics. This dynamics is characterized in terms of the kinetic energy transfer between the dipoles, their orientation along the electric field, as well as their chaotic behavior. The field-free energy transfer mechanism shows an abrupt transition between equipartition and non-equipartition regimes, which is independent of the initial direction of rotation due to the existence of an infinite set of equivalent manifolds. The field-dressed dynamics is highly complex and strongly depends on the electric field strength and on the initial conditions. In the strong field regime, the energy equipartition and chaotic behavior dominate the dynamics.

References in corpus (14)

• The physics of dipolar bosonic quantum gases
• Realizing a lattice spin model with polar molecules
• Observation of quantum droplets in a strongly dipolar Bose gas
• Self-bound droplets of a dilute magnetic quantum liquid
• Dipolar collisions of polar molecules in the quantum regime
• Controlling the quantum stereodynamics of ultracold bimolecular reactions
• Detecting order and chaos in Hamiltonian systems by the SALI method
• Exploring out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system
• Strongly driven quantum pendulum of the OCS molecule
• Competition between Bose Einstein Condensation and spin dynamics
• Nonlinear dynamics of ionization stabilization of atoms in intense laser fields
• Phenomenology of coupled non linear oscillators
• Energy transfer mechanisms in a dipole chain: From energy equipartition to the formation of breathers
• Analysis of classical phase space and energy transfer for two rotating dipoles in an electric field