Search Results for author: Thomas Barthel

Found 4 papers, 2 papers with code

Machine learning with tree tensor networks, CP rank constraints, and tensor dropout

no code implementations30 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.

Image Classification Tensor Networks

Super-operator structures and no-go theorems for dissipative quantum phase transitions

no code implementations10 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

Precise evaluation of thermal response functions by optimized density matrix renormalization group schemes

2 code implementations10 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

Spectral functions in one-dimensional quantum systems at T>0

1 code implementation15 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

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