no code implementations • 30 May 2023 • Hao Chen, Thomas Barthel
As suggested in [arXiv:2205. 15296] in the context of quantum many-body physics, computation costs can be further substantially reduced by imposing constraints on the canonical polyadic (CP) rank of the tensors in such networks.
no code implementations • 10 Dec 2020 • Thomas Barthel, Yikang Zhang
In the thermodynamic limit, the steady states of open quantum many-body systems can undergo nonequilibrium phase transitions due to a competition between coherent and driven-dissipative dynamics.
Quantum Physics Quantum Gases
2 code implementations • 10 Jan 2013 • Thomas Barthel
This paper provides a study and discussion of earlier as well as novel more efficient schemes for the precise evaluation of finite-temperature response functions of strongly correlated quantum systems in the framework of the time-dependent density matrix renormalization group (tDMRG).
Quantum Physics Strongly Correlated Electrons
1 code implementation • 15 Jan 2009 • Thomas Barthel, Ulrich Schollwöck, Steven R. White
We present for the first time time-dependent density-matrix renormalization-group simulations (t-DMRG) at finite temperatures.
Strongly Correlated Electrons