Entanglement in quantum many-body systems can exhibit universal phenomena governed
by long-distance properties. We study universality and phase transitions of the entanglement …

The ground-state phase diagram of a spin-1 2 XXZ chain with competing ferromagnetic
nearest-neighbor (J 1< 0) and antiferromagnetic second-neighbor (J 2> 0) exchange …

We study a one-dimensional (1D) system that shows many analogies to proposed two-
dimensional (2D) deconfined quantum critical points (DQCP). Our system is a translationally …

We perform a numerical study of a spin-1/2 model with Z 2× Z 2 symmetry in one dimension
which demonstrates an interesting similarity to the physics of two-dimensional deconfined …

The phase diagram of the quantum spin-1 2 antiferromagnetic J 1-J 2 XXZ chain was
obtained by Haldane using bosonization techniques [Haldane, Phys. Rev. B 25, 4925 …

We study solvable spin chains, one-dimensional massless Dirac fermions and conformal
field theories (CFTs) with sine-square deformation (SSD), in which the Hamiltonian density …

We study the ground-state phase diagram of a spin-1 2 frustrated XXZ ladder, in which two
antiferromagnetic chains are coupled by competing rung and diagonal interactions, J⊥ and …

The spin-1/2 ferromagnetic XXZ chain is a prototypical many-body quantum model, exactly
solvable via the integrable Bethe ansatz method, hosting a Tomonaga-Luttinger spin liquid …

Kinetically frustrated bosons at half filling in the presence of a competing nearest-neighbor
repulsion support a wide supersolid regime on the two-dimensional triangular lattice. We …

Correlation functions of dimer operators, the product operators of spins on two adjacent
sites, are studied in the spin-1 2 XXZ chain in the critical regime. The amplitudes of the …