65 citations · 138 across the 7 of their papers we have counts for
7 papers
Sign-optimized Quantum Monte Carlo
Julius S. Herz, Robin Schäfer, Matías G. Gonzalez +1
The sign problem breaks the polynomial scaling of Quantum Monte Carlo methods. We alleviate it by rotation of the local basis of the Hilbert space, such that the phase of off-diago…
Hall-on-Toric: Descendant Laughlin state in the chiral toric code
Robin Schäfer, Claudio Chamon, Chris R. Laumann
We demonstrate that the chiral toric code -- the quintessential model of topological order -- hosts additional, emergent topological phases when perturbed: descendan…
Probing Hilbert space fragmentation using controlled dephasing
Dominik Vuina, Robin Schäfer, David M. Long +1
Dynamical constraints in many-body quantum systems can lead to Hilbert space fragmentation, wherein the system's evolution is restricted to small subspaces of Hilbert space called…
DanceQ: High-performance library for number-conserving bases
Robin Schäfer, David J. Luitz
The complexity of quantum many-body problems scales exponentially with the size of the system, rendering any finite size scaling analysis a formidable challenge. This is particular…
[111]-strained spin ice: Localization of thermodynamically deconfined monopoles
Zhongling Lu, Robin Schäfer, Jonathan N. Hallén +1
We study classical spin ice under uniaxial strain along the crystallographic axis. Remarkably, such strain preserves the extensive ice degeneracy and the corresponding clas…
Possible inversion symmetry breaking in the pyrochlore Heisenberg magnet
Imre Hagymási, Robin Schäfer, Roderich Moessner +1
We address the ground-state properties of the long-standing and much-studied three-dimensional quantum spin liquid candidate, the pyrochlore Heisenberg antiferromagne…
The pyrochlore S=1/2 Heisenberg antiferromagnet at finite temperature
Robin Schäfer, Imre Hagymási, Roderich Moessner +1
Frustrated three dimensional quantum magnets are notoriously impervious to theoretical analysis. Here we use a combination of three computational methods to investigate the three d…