Regensburg 2013 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 33: Poster II

DY 33.50: Poster

Thursday, March 14, 2013, 17:00–19:00, Poster C

Numerical survey of the condensate shape and scaling laws in pair-factorized steady states — Eugen Ehrenpreis, •Hannes Nagel, and Wolfhard Janke — Institut für theoretische Physik, Universität Leipzig, Leipzig, Deutschland

We numerically survey the shapes and scaling laws of extended particle condensates that emerge as a result of spontaneous symmetry breaking in pair-factorized steady states of a stochastic transport process. The specific model based on the zero-range process consists of indistinguishable particles that stochastically hop between sites controlled by a tunable interaction composed of a zero-range and a local-range part. We identify the different condensate shapes within their respective regimes of interaction strengths as well as precisely determine the condensate width scaling. We find good agreement with theoretic predictions [1].

1. ] B. Wacław, J. Sopik, W. Janke and H. Meyer-Ortmanns, Phys. Rev. Lett. 103, 080602 (2009).
2. ] E. Ehrenpreis, H. Nagel and W. Janke, Lepzig preprint (2012).