Work

Time-dependent study of disordered models with infinite projected entangled pair states

Year: 2019

Type: article

Abstract: Infinite projected entangled pair states (iPEPS), the tensor network ansatz for two-dimensional systems in the thermodynamic limit, already provide excellent results on ground-state quantities using either imaginary-time evolution or variational optimisation. Here, we show (i) the feasibility of real-time evolution in iPEPS to simulate the dynamics of an infinite system after a global quench and (ii) the application of disorder-averaging to obtain translationally invariant systems in the presence of disorder. To illustrate the approach, we study the short-time dynamics of the square lattice Heisenberg model in the presence of a bi-valued disorder field.

Source: SciPost Physics

DOI: 10.21468/scipostphys.6.3.031

Authors: Claudius Hubig, J. Ignacio Cirac

Institutions: Max Planck Institute of Quantum Optics, Munich Center for Quantum Science and Technology

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Deutsche Forschungsgemeinschaft, European Research Council, H2020 European Research Council

Awards: G1768993395, Quantum Emitters in non-conventional baths, G4710139657, EXC 2111: Munich Center for Quantum Science and Technology (MCQST)