The Theory Division of MPQ recently held a collaborative workshop at the environmental research station Schneefernerhaus located on Zugspitze at an altitude of 2650 meters above sea level.
We use projected entangled-pair states (PEPS) to calculate the large deviation statistics of the dynamical activity of the two-dimensional East model, and the two-dimensional symmetric simple exclusion process (SSEP) with open boundaries, in lattices of up to 40×40 sites.
We consider free fermions living on lattices in arbitrary dimensions, where hopping amplitudes follow a power-law decay with respect to the distance. We focus on the regime where this power is larger than the spatial dimension (i.e., where the single particle energies are guaranteed to be bounded) for which we provide a comprehensive series of fundamental constraints on their equilibrium and nonequilibrium properties.
The interplay of quantum statistics and interactions in atomic Bose–Fermi mixtures leads to a phase diagram markedly different from pure fermionic or bosonic systems. However, investigating this phase diagram remains challenging when bosons condense due to the resulting fast interspecies loss.
We propose a mechanism for liquid formation in strongly correlated lattice systems. The mechanism is based on an interplay between long-range attraction and superexchange processes.
Theorists at MPQ have investigated the effects of error propagation on the quality of computations of classical optimisation problems on NISQ computers in a recent work.
Both non-Hermitian systems and the behavior of emitters coupled to structured baths have been studied intensely in recent years. Here, we study the interplay of these paradigmatic settings.
The 2022 edition of the theory group workshop took place from October 17 to October 19 in the beautiful town of Umhausen in Ötztal, Austria. After a two year long hiatus, the group got together for three days packed with captivating talks and engaging discussions.
