174 citations · 532 across the 21 of their papers we have counts for
10 papers · 1 filter
Scars of Kramers-Henneberger atoms
Elena Floriani, Jonathan Dubois, Cristel Chandre
Electron motion in an atom driven by an intense linearly polarized laser field can exhibit a laser-dressed stable state, referred to as the Kramers-Henneberger (KH) state or KH ato…
Conservative dissipation: How important is the Jacobi identity in the dynamics?
Cameron Caligan, Cristel Chandre
Hamiltonian dynamics are characterized by a function, called the Hamiltonian, and a Poisson bracket. The Hamiltonian is a conserved quantity due to the anti-symmetry of the Poisson…
Hamiltonian closures for fluid models with four moments by dimensional analysis
M Perin, C Chandre, P. J. Morrison +1
Fluid reductions of the Vlasov-Amp{è}re equations that preserve the Hamiltonian structure of the parent kinetic model are investigated. Hamiltonian closures using the first four mo…
Analyzing intramolecular dynamics by Fast Lyapunov Indicators
Elena Shchekinova, Cristel Chandre, Yueheng Lan +1
We report an analysis of intramolecular dynamics of the highly excited planar carbonyl sulfide (OCS) below and at the dissociation threshold by the Fast Lyapunov Indicator (FLI) me…
Tailored mixing inside a translating droplet
Rodolphe Chabreyrie, Dmitri Vainchtein, Cristel Chandre +2
Tailored mixing inside individual droplets could be useful to ensure that reactions within microscopic discrete fluid volumes, which are used as microreactors in ``digital microflu…
How periodic orbit bifurcations drive multiphoton ionization
S. Huang, C. Chandre, T. Uzer
The multiphoton ionization of hydrogen by a strong bichromatic microwave field is a complex process prototypical for atomic control research. Periodic orbit analysis captures this…
Reducing multiphoton ionization in a linearly polarized microwave field by local control
S. Huang, C. Chandre, T. Uzer
We present a control procedure to reduce the stochastic ionization of hydrogen atom in a strong microwave field by adding to the original Hamiltonian a comparatively small control…
Reducing or enhancing chaos using periodic orbits
Romain Bachelard, Cristel Chandre, Xavier Leoncini
A method to reduce or enhance chaos in Hamiltonian flows with two degrees of freedom is discussed. This method is based on finding a suitable perturbation of the system such that t…
Time-frequency analysis of chaotic systems
C. Chandre, S. Wiggins, T. Uzer
We describe a method for analyzing the phase space structures of Hamiltonian systems. This method is based on a time-frequency decomposition of a trajectory using wavelets. The rid…
Scaling law for the critical function of an approximate renormalization
C. Chandre, P. Moussa
We construct an approximate renormalization for Hamiltonian systems with two degrees of freedom in order to study the break-up of invariant tori with arbitrary frequency. We derive…