4 papers
Nonlinear light cone spreading of correlations in a triangular quantum magnet: a hard quantum simulation target
A. Scheie, J. Willsher, E. A. Ghioldi +6
Dynamical correlations of quantum many-body systems are typically analyzed in the momentum space and frequency basis. However, quantum simulators operate more naturally in real spa…
Persistence of the Berezinskii-Kosterlitz-Thouless transition with long-range couplings
Luis Walther, Josef Willsher, Johannes Knolle
The Berezinskii-Kosterlitz-Thouless (BKT) transition is an archetypal example of a topological phase transition, which is driven by the proliferation of vortices. In this Letter, w…
Dynamics and stability of U(1) spin liquids beyond mean-field theory: Triangular-lattice - Heisenberg model
Josef Willsher, Johannes Knolle
Quantum spin liquids (QSLs) are long-range entangled phases of frustrated magnets exhibiting fractionalized spin excitations. In two dimensions, there is limited analytical underst…
Stability of algebraic spin liquids coupled to quantum phonons
Francesco Ferrari, Josef Willsher, Urban F. P. Seifert +2
Algebraic spin liquids are quantum disordered phases of insulating magnets which exhibit fractionalized gapless excitations and power-law correlations. Quantum spin liquids in this…