22 citations · 57 across the 7 of their papers we have counts for
7 papers
Effective quasiparticle conserving Lindbladians in the thermodynamic limit
Lea Lenke, Kai Phillip Schmidt
Open quantum many-body systems are commonly described by Lindblad master equations, yet the treatment of Lindbladian operators in the thermodynamic limit remains a major challenge.…
Absence of topological order in the checkerboard toric code
M. Vieweg, V. Kott, L. Lenke +2
We investigate the checkerboard toric code which corresponds to the -symmetry enriched toric code with two distinct star sublattices. One can therefore tune from the l…
Absence of fractal quantum criticality in the quantum Newman-Moore model
R. Wiedmann, L. Lenke., M. Mühlhauser +1
The quantum phase transition between the low-field fracton phase with type-II fracton excitations and the high-field polarized phase is investigated in the two-dimensional self-dua…
Series expansions in closed and open quantum many-body systems with multiple quasiparticle types
L. Lenke, A. Schellenberger, K. P. Schmidt
The established approach of perturbative continuous unitary transformations (pCUTs) constructs effective quantum many-body Hamiltonians as perturbative series that conserve the num…
Quantum phase transitions in the -layer Ising toric code
L. Schamriss, L. Lenke, M. Mühlhauser +1
We investigate the quantum phase diagram of the -layer Ising toric code corresponding to layers of two-dimensional toric codes coupled by Ising interactions. While for small…
High-order series expansion of non-Hermitian quantum spin models
L. Lenke, M. Mühlhauser, K. P. Schmidt
We investigate the low-energy physics of non-Hermitian quantum spin models with -symmetry. To this end we consider the one-dimensional Ising chain and the two-dimensional toric…
Quantum critical phase transition between two topologically-ordered phases in the Ising toric code bilayer
R. Wiedmann, L. Lenke, M. R. Walther +2
We demonstrate that two toric code layers on the square lattice coupled by an Ising interaction display two distinct phases with intrinsic topological order. The second-order quant…