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From classical to quantum non-equilibrium dynamics of Rydberg excitations in optical lattices
Marco Mattioli, Alexander W. Glaetzle, Wolfgang Lechner
The glass phase and its quantum analog are prominent challenges of current non-equilibrium statistical mechanics and condensed matter physics. As a model system to study the transi…
Cluster Luttinger liquids and emergent supersymmetric conformal critical points in the one-dimensional soft-shoulder Hubbard model
M. Dalmonte, W. Lechner, Zi Cai +3
We investigate the quantum phases of hard-core bosonic atoms in an extended Hubbard model where particles interact via soft-shoulder potentials in one dimension. Using a combinatio…
Entropy and Kinetics of Point-Defects in Two-Dimensional Dipolar Crystals
Wolfgang Lechner, David Polster, Georg Maret +2
We study in experiment and with computer simulation the free energy and the kinetics of vacancy and interstitial defects in two-dimensional dipolar crystals. The defects appear in…
Tuneable defect interactions and supersolidity in dipolar quantum gases on a lattice potential
Wolfgang Lechner, Fabio Cinti, Guido Pupillo
Point defects in self-assembled crystals, such as vacancies and interstitials, attract each other and form stable clusters. This leads to a phase separation between perfect crystal…
A string reaction coordinate for the folding of a polymer chain
Christian Leitold, Wolfgang Lechner, Christoph Dellago
We investigate the crystallization mechanism of a single, flexible homopolymer chain with short range attractions. For a sufficiently narrow attractive well, the system undergoes a…
Spatial Patterns of Rydberg Excitations from Logarithmic Pair Interactions
Wolfgang Lechner, Peter Zoller
The collective excitations in ensembles of dissipative, laser driven ultracold atoms exhibit crystal-like patterns, a many-body effect of the Rydberg blockade mechanism. These crys…