Masafumi Udagawa Ludovic D. C. Jaubert Claudio Castelnovo Roderich Moessner
2016年3月
We study the interplay of topological bottlenecks and energetic barriers to<br />
equilibration in a Coulomb spin liquid where a short-range energetic coupling<br />
between defects charged under an emergent gauge field supplements their<br />
ent...
Finite-temperature (T) properties of a Kitaev model defined on a honeycomb lattice are investigated by a quantum Monte Carlo simulation, from the viewpoint of fractionalization of quantum S = 1/2 spins into two types of Majorana fermions, itineran...
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT 2015年1月
We study the entanglement spectrum of the Hubbard model at half filling on a kagome lattice. The entanglement spectrum is defined by the set of eigenvalues of a reduced thermal density matrix, which is naturally obtained in the framework of the dy...
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014) 592 2015年
A three-dimensional Kitaev model on a hyperhoneycomb lattice is investigated numerically at finite temperature. The Kitaev model is one of the solvable quantum spin models, where the ground state is given by gapped and gapless spin liquids, depend...
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014) 592 2015年
Effects of an open surface on a magnetic Chern insulator are investigated in comparison with those of an interface to a capping magnetic layer. In magnets, an open surface often perturbs the magnetic order by a reconstruction of the magnetic momen...
人文科学研究科
理学部