Observing Power-Law Dynamics of Position-Velocity Correlation in Anomalous Diffusion.
In: Physical Review Letters, Jg. 119 (2017-08-11), Heft 6, S. 1-1
academicJournal
Zugriff:
In this Letter, we present a measurement of the phase-space density distribution (PSDD) of ultracold 87Rb atoms performing 1D anomalous diffusion. The PSDD is imaged using a direct tomographic method based on Raman velocity selection. It reveals that the position-velocity correlation function Cxv(t) builds up on a time scale related to the initial conditions of the ensemble and then decays asymptotically as a power law. We show that the decay follows a simple scaling theory involving the power-law asymptotic dynamics of position and velocity. The generality of this scaling theory is confirmed using Monte Carlo simulations of two distinct models of anomalous diffusion. [ABSTRACT FROM AUTHOR]
Titel: |
Observing Power-Law Dynamics of Position-Velocity Correlation in Anomalous Diffusion.
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Autor/in / Beteiligte Person: | Afek, Gadi ; Coslovsky, Jonathan ; Courvoisier, Arnaud ; Livneh, Oz ; Davidson, Nir |
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Zeitschrift: | Physical Review Letters, Jg. 119 (2017-08-11), Heft 6, S. 1-1 |
Veröffentlichung: | 2017 |
Medientyp: | academicJournal |
ISSN: | 0031-9007 (print) |
DOI: | 10.1103/PhysRevLett.119.060602 |
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