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6 papers · 2 filters
Deconfined classical criticality in the anisotropic quantum spin- XY model on the square lattice
Christopher Mudry, Ömer M. Aksoy, Claudio Chamon +1
The anisotropic quantum spin-1/2 XY model on a linear chain was solved by Lieb, Schultz, and Mattis in 1961 and shown to display a continuous quantum phase transition at the O(2) s…
Ground state of the S = 1/2 Heisenberg spin chain with random ferro- and antiferromagnetic couplings
Sibei Li, Hui Shao, Anders W. Sandvik
We study the Heisenberg chain with random ferro- and antiferromagnetic couplings using quantum Monte Carlo simulations at ultra-low temperatures, converging to the ground s…
Fractal Subsystem Symmetries, Anomalies, Boundaries, and Effective Field Theory
Heitor Casasola, Guilherme Delfino, Yizhi You +2
This work reports an extensive study of three-dimensional topological ordered phases that, in one of the directions behave like usual topological order concerning mobility of excit…
[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…
Gauging modulated symmetries: Kramers-Wannier dualities and non-invertible reflections
Salvatore D. Pace, Guilherme Delfino, Ho Tat Lam +1
Modulated symmetries are internal symmetries that act in a non-uniform, spatially modulated way and are generalizations of, for example, dipole symmetries. In this paper, we system…
Cross Validation in Stochastic Analytic Continuation
Gabe Schumm, Sibin Yang, Anders W. Sandvik
Stochastic Analytic Continuation (SAC) of Quantum Monte Carlo (QMC) imaginary-time correlation function data is a valuable tool in connecting many-body models to experimentally mea…