We discuss the most prominent and intensively studied S= 1 pseudospin formalism for the
extended bosonic Hubbard model (EBHM) with the on-site Hilbert space truncated to the …

We analyze a microscopic mechanism behind the coexistence of a heavy Fermi liquid and
geometric frustration in Kondo lattices. We consider a geometrically frustrated periodic …

We introduce a minimal model for 2D cuprates with the on-site Hilbert space reduced to only
three effective valence centers CuO 4 7-, 6-, 5-(nominally Cu 1+, 2+, 3+) and make use of …

Systems of free fermions are classified by symmetry, space dimensionality, and topological
properties described by K homology. Those systems belonging to different classes are …

We investigate the phase diagram of S= 1 quantum spin systems with SU (2)-invariant
interactions, at low temperatures and in three spatial dimensions. Symmetry breaking and …

We show that generic SU (2)-invariant random spin-1 chains have phases with an emergent
SU (3) symmetry. We map out the full zero-temperature phase diagram and identify two …

We calculate the spectral density and occupations of a system of two capacitively coupled
quantum dots, each one connected to its own pair of conducting leads, in a regime of …

We demonstrate the quantum fidelity approach for exploring and mapping out quantum
phases. As a simple model exhibiting a number of distinct quantum phases, we consider the …

Recently, emergent symmetry is one of fast-growing intriguing issues in many-body systems.
Its roles and consequential physics have not been well understood in quantum phase …

Структуры, содержащие наноразмерные ферромагнитные пленки и магнитные
металлические частицы, обладают рядом свойств и особенностей, существенно …