Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 46: Ultra-cold plasmas and Rydberg systems (with Q)

A 46.5: Vortrag

Freitag, 22. März 2013, 12:00–12:15, F 428

Generating Lévy stable disorder from a random enviroment — •Sebastian Möbius1, Sebastiaan M. Vlaming1,2, Victor A. Malyshev2, Jasper Knoester2, and Alexander Eisfeld11Max Planck Institute for Physics of Complex Systems, Nöthnitzer Strasse 38, D-01187 Dresden, Germany — 2Centre for Theoretical Physics and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands

Assemblies of molecules or atoms, that are coupled via long range resonant transition dipole-dipole interaction, exhibit extraordinary absorption properties. In the presence of an environment, that leads to static Gaussian energy fluctuations of the individual constituents, a narrowing of the absorptions band is observed. Recent studies [1] have shown, that Levy stable distributions (LSD), a generalization of the Gaussian case, may also lead to a broadening of the absorption band.

Assemblies of Rydberg exited atoms are an ideal system, to experimentally study the proposed effects of the LSD. The large polarizability of Rydberg atoms allow for a strong interaction with an environment, e.g. polar background gas. The resulting energy fluctuations, due to Stark shifts, will be distributed according to a LSD.

[1] A. Eisfeld, S.M. Vlaming, V.A. Malyshev, J. Knoester, PRL 105, 137402 (2010)

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