22 citations · 23 across the 3 of their papers we have counts for
3 papers
Quantum effects in the magnon spectrum of 2D altermagnets via continuous similarity transformations
Raymond Wiedmann, Dag-Björn Hering, Vanessa Sulaiman +3
We investigate quantum effects on magnon excitations in a minimal spin-1/2 Heisenberg model for 2D altermagnets on the square lattice. A continuous similarity transformation is app…
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…
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…