year | 2016 |

author(s) | M. Karl and T. Gasenzer |

title | Strongly anomalous non-thermal fixed point in a quenched two-dimensional Bose gas |

KIP-Nummer | HD-KIP 16-110 |

KIP-Gruppe(n) | F17,F27,P2 |

document type | Paper |

Keywords | Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics, Physics - Fluid Dynamics |

source | New J. Phys. 19 (2017) 093014, arXiv:1611.01163 |

doi | http://dx.doi.org/10.1088/1367-2630/aa7eeb |

Abstract (en) | Universal scaling behavior in the relaxation dynamics of an isolated two-dimensional Bose gas is studied by means of semi-classical stochastic simulations of the Gross-Pitaevskii model. The system is quenched far out of equilibrium by imprinting vortex defects into an otherwise phase-coherent condensate. A strongly anomalous non-thermal fixed point is identified, associated with a slowed decay of the defects in the case that the dissipative coupling to the thermal background noise is suppressed. At this fixed point, a large anomalous exponent η ≃ −3 and, related to this, a large dynamical exponent |

bibtex | @article{Karl2017bNJP19093014, author = {{Karl}, M. and {Gasenzer}, T.}, title = {{Strongly anomalous non-thermal fixed point in a quenched two-dimensional Bose gas}}, journal = {New J. Phys., arXiv:1611.01163 }, year = {2017}, volume = {19}, pages = {093014}, month = {}, note = {}, doi = {10.1088/1367-2630/aa7eeb}, url = {} } |

Sample Image | |

URL | arXiv:1611.01163 [cond-mat.quant-gas] |

URL | doi:10.1088/1367-2630/aa7eeb |

Datei |

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Im Neuenheimer Feld 227

Raum 3.402

69120 Heidelberg