Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 71: Correlated Electrons: Poster Session

TT 71.63: Poster

Mittwoch, 18. März 2015, 15:00–18:00, Poster B

Bound state fragmentation of a spin line in 2 dimensions — •Jonathan Lux and Achim Rosch — Institute for theoretical Physics, Cologne

We investigate the dynamics of a line of down-spins embedded in the ferromagnetic spin-up ground state of a two-dimensional XXZ model close to the Ising limit. We treat the system as an open 1 dimensional system, and use a Schrieffer Wolff transformation in combination with a semiclassical approximation to tackle this quantum quench problem. During the time evolution, the line is fragmented into free and bound states of down-spins. We determine the statistics of the bound states, which, in principle, can be measured in cold atom systems using a quantum microscope.