Over the last decade impressive progress has been made in the theoretical understanding
of transport properties of clean, one-dimensional quantum lattice systems. Many physically …

Using ground-state projector quantum Monte Carlo simulations in the valence-bond basis, it
is demonstrated that nonfrustrating four-spin interactions can destroy the Néel order of the …

We use the density matrix renormalization group method to calculate several energy
eigenvalues of the frustrated S= 1/2 square-lattice J 1-J 2 Heisenberg model on 2 L× L …

The nature of the zero-temperature phase diagram of the spin-1/2 J 1-J 2 Heisenberg model
on a square lattice has been debated in the past three decades, and it remains one of the …

We introduce a class of states, called minimally entangled typical thermal states, designed to
resemble a typical state of a quantum system at finite temperature with a bias towards …

We propose an easily implemented approach to study time-dependent correlation functions
of<? format?> one-dimensional systems at finite-temperature T using the density matrix …

Strongly interacting quantum systems described by non-stoquastic Hamiltonians exhibit rich
low-temperature physics. Yet, their study poses a formidable challenge, even for state-of-the …

We study two-dimensional Heisenberg antiferromagnets with additional multispin
interactions which can drive the system into a valence-bond-solid state. For standard SU (2) …

We present time-dependent density matrix renormalization group simulations (t-DMRG) at
finite temperatures. It is demonstrated how a combination of finite-temperature t-DMRG and …

Motivated by recent experiments on Bi 3 Mn 4 O 12 (NO 3), we study a frustrated J 1-J 2
Heisenberg model on the two-dimensional (2D) honeycomb lattice. The classical J 1-J 2 …