61 citations · 396 across the 20 of their papers we have counts for
5 papers · 1 filter
Detecting emergent continuous symmetries at quantum criticality
Mingru Yang, Bram Vanhecke, Norbert Schuch
New or enlarged symmetries can emerge at the low-energy spectrum of a Hamiltonian that does not possess the symmetries, if the symmetry breaking terms in the Hamiltonian are irrele…
Partial lifting of degeneracy in the Ising antiferromagnet on the kagome lattice
Jeanne Colbois, Bram Vanhecke, Laurens Vanderstraeten +3
Motivated by dipolar-coupled artificial spin systems, we present a theoretical study of the classical Ising antiferromagnet on the kagome lattice. We establish the gr…
Simulating thermal density operators with cluster expansions and tensor networks
Bram Vanhecke, David Devoogdt, Frank Verstraete +1
We provide an efficient approximation for the exponential of a local operator in quantum spin systems using tensor-network representations of a cluster expansion. We benchmark this…
Variational methods for contracting projected entangled-pair states
Laurens Vanderstraeten, Lander Burgelman, Boris Ponsioen +5
The norms or expectation values of infinite projected entangled-pair states (PEPS) cannot be computed exactly, and approximation algorithms have to be applied. In the last years, m…
Tensor-network approach to phase transitions in string-net models
Alexis Schotte, Jose Carrasco, Bram Vanhecke +4
We use a recently proposed class of tensor-network states to study phase transitions in string-net models. These states encode the genuine features of the string-net condensate suc…