Quantum many-body systems in thermal equilibrium

ÁM Alhambra - PRX Quantum, 2023 - APS
The thermal or equilibrium ensemble is one of the most ubiquitous states of matter. For
models comprised of many locally interacting quantum particles, it describes a wide range of …

Simulating chiral spin liquids with projected entangled-pair states

J Hasik, M Van Damme, D Poilblanc… - Physical Review Letters, 2022 - APS
Doubts have been raised on the representation of chiral spin liquids exhibiting topological
order in terms of projected entangled pair states (PEPSs). Here, starting from a simple spin …

An introduction to infinite projected entangled-pair state methods for variational ground state simulations using automatic differentiation

J Naumann, EL Weerda, M Rizzi, J Eisert… - SciPost Physics Lecture …, 2024 - scipost.org
Tensor networks capture large classes of ground states of phases of quantum matter
faithfully and efficiently. Their manipulation and contraction has remained a challenge over …

Generating function for projected entangled-pair states

WL Tu, L Vanderstraeten, N Schuch, HY Lee… - PRX Quantum, 2024 - APS
Diagrammatic summation is a common bottleneck in modern applications of projected
entangled-pair states, especially in computing low-energy excitations of a two-dimensional …

Time evolution of an infinite projected entangled pair state: Neighborhood tensor update

J Dziarmaga - Physical Review B, 2021 - APS
The simple update (SU) and full update (FU) are the two paradigmatic time evolution
algorithms for a tensor network known as the infinite projected entangled pair state (iPEPS) …

Time evolution of an infinite projected entangled pair state: A gradient tensor update in the tangent space

J Dziarmaga - Physical Review B, 2022 - APS
Time evolution of an infinite two-dimensional (2D) many body quantum lattice system can be
described by the Suzuki-Trotter decomposition applied to the infinite projected entangled …

Isometric tensor network representations of two-dimensional thermal states

W Kadow, F Pollmann, M Knap - Physical Review B, 2023 - APS
Tensor networks provide a useful tool to describe low-dimensional complex many-body
systems. Finding efficient algorithms to use these methods for finite-temperature simulations …

Scaling hypothesis for matrix product states

B Vanhecke, J Haegeman, K Van Acoleyen… - Physical Review Letters, 2019 - APS
We study critical spin systems and field theories using matrix product states, and formulate a
scaling hypothesis in terms of operators, eigenvalues of the transfer matrix, and lattice …

Simulation of three-dimensional quantum systems with projected entangled-pair states

PCG Vlaar, P Corboz - Physical Review B, 2021 - APS
Tensor network algorithms have proven to be very powerful tools for studying one-and two-
dimensional quantum many-body systems. However, their application to three-dimensional …

Finite-temperature tensor network study of the Hubbard model on an infinite square lattice

A Sinha, MM Rams, P Czarnik, J Dziarmaga - Physical Review B, 2022 - APS
The Hubbard model is a longstanding problem in the theory of strongly correlated electrons
and a very active one in the experiments with ultracold fermionic atoms. Motivated by current …