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Decaying superfluid turbulence near an anomalous non-thermal fixed point
Niklas Rasch, Thomas Gasenzer
We investigate anomalously slow coarsening in a dilute two-dimensional (2d) superfluid closed with respect to particle and energy exchange with the environment. The dynamics is dem…
Anomalous non-thermal fixed point in a quasi-two-dimensional dipolar Bose gas
Niklas Rasch, Lauriane Chomaz, Thomas Gasenzer
The emergence of distinctly sub-diffusive scaling in the vicinity of an anomalous non-thermal fixed point is discussed in a quasi-two-dimensional dipolar Bose gas in the superfluid…
Bogoliubov phonons in a Bose-Einstein condensate from the one-loop perturbative renormalization group
Niklas Rasch, Aleksandr N. Mikheev, Thomas Gasenzer
Wilson's renormalization-group approach to the weakly-interacting single-component Bose gas is discussed within the symmetry-broken, condensate phase. Extending upon the work by Bi…
Universal Dynamics at the Lowest Temperatures
Ido Siovitz, Philipp Heinen, Niklas Rasch +5
High-performance graphical processing units (GPU) are used for the repeated parallelised propagation of non-linear partial differential equations on large spatio-temporal grids. Th…