Classical spin dynamics based on coherent states

H Zhang, CD Batista - Physical Review B, 2021 - APS
We introduce a classical limit of the dynamics of quantum spin systems based on coherent
states of SU (N), where N is the dimension of the local Hilbert space. This approach, which …

Hybridized quadrupolar excitations in the spin-anisotropic frustrated magnet FeI2

X Bai, SS Zhang, Z Dun, H Zhang, Q Huang, H Zhou… - Nature Physics, 2021 - nature.com
Magnetic order is usually associated with well-defined magnon excitations. Exotic magnetic
fluctuations with fractional, topological or multipolar character have been proposed for …

Tensor networks and efficient descriptions of classical data

S Lu, M Kanász-Nagy, I Kukuljan, JI Cirac - arXiv preprint arXiv …, 2021 - arxiv.org
We investigate the potential of tensor network based machine learning methods to scale to
large image and text data sets. For that, we study how the mutual information between a …

Generalization of group-theoretic coherent states for variational calculations

T Guaita, L Hackl, T Shi, E Demler, JI Cirac - Physical Review Research, 2021 - APS
We introduce families of pure quantum states that are constructed on top of the well-known
Gilmore-Perelomov group-theoretic coherent states. We do this by constructing unitaries as …

Phase diagram of semi-hard-core bosons on a square lattice

VV Konev, YD Panov - Physics of the Solid State, 2021 - Springer
Phase diagrams of charged “semi-hard-core” bosons are studied in the mean field
approximation. An increase in the parameter of local correlations is shown to lead to the …

Особенности фазовой диаграммы полужестких бозонов на квадратной решетке

ВВ Конев, ЮД Панов - Физика твердого тела, 2021 - mathnet.ru
Исследовались фазовые диаграммы системы заряженных “полужестких”(semi-hard-
core) бозонов в приближении среднего поля. Показано, что увеличение параметра …