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Collective versus Single--Particle Motion in Quantum Many--Body Systems: Spreading and its Semiclassical Interpretation
collective motion semiclassical physics perturbation theory
2010/12/15
We study the interplay between collective and incoherent single–particle motion in a model of two chains of particles whose interaction comprises a non–integrable part. In the perturbative regime,but ...
Collective versus Single--Particle Motion in Quantum Many--Body Systems from the Perspective of an Integrable Model
Single--Particle Motion Quantum Many--Body Systems Integrable Model
2009/11/13
We study the emergence of collective dynamics in the integrable Hamiltonian system of two finite ensembles of coupled harmonic oscillators. After identification of a collective degree of freedom, the ...