We study spin-wave excitations in α-RuCl 3 by the spin-wave theory. Starting from the five-
orbital Hubbard model and the perturbation theory, we derive an effective isospin-1/2 model …

We introduce an inhomogeneous bosonic mixture composed of two kinds of hard-core and
semi-hard-core bosons with different nilpotency conditions and demonstrate that in contrast …

In this work, we address a challenging problem of a competition of charge and spin orders
for high-T c cuprates within a simplified 2D spin-pseudospin model which takes into account …

It is shown that certain fractionally-charged quasiparticles can be modeled on D−
dimensional lattices in terms of unconventional yet simple Fock algebras of creation and …

This work focuses on the magnetism of spin-1 2 moments in BiCu2PO6, which is believed to
be described by an effectively one-dimensional frustrated spin-ladder model. In accordance …

The graded generalized Fibonacci sequence and Binet formula Page 1 The graded
generalized Fibonacci sequence and Binet formula Won Sang Chung∗,†, Minji Han∗ and …