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Semi-classical Approach to Quantum Spin Ice
M. P. Kwasigroch, B. Douçot, C. Castelnovo
We propose a semi-classical description of the low-energy properties of quantum spin ice in the strong Ising limit. Within the framework of a semiclassical, perturbative Villain ex…
D-wave superconductivity in boson+fermion dimer models
Garry Goldstein, Claudio Chamon, Claudio Castelnovo
We present a slave-particle mean-field study of the mixed boson+fermion quantum dimer model introduced by Punk, Allais, and Sachdev [PNAS 112, 9552 (2015)] to describe the physics…
Free coherent spinons in quantum square ice
Stefanos Kourtis, Claudio Castelnovo
We investigate the quantum dynamics of monopole-like excitations in quantum square ice, as captured by the strongly anisotropic spin-1/2 XXZ model on the checkerboard lattice. We o…
When opposites repel: from metastability to extended chiral spin textures in spin ice with short-range topological-defect interactions
Masafumi Udagawa, Ludovic D. C. Jaubert, Claudio Castelnovo +1
We study the interplay of topological bottlenecks and energetic barriers to equilibration in a Coulomb spin liquid where a short-range energetic coupling between defects charged un…