Preprint/Report

PUBDB-2015-02073

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Thermal evolution of the Schwinger model with Matrix Product Operators

Bañuls, M. C. ; Cichy, K.DESY* ; Cirac, J. I. ; Jansen, K.DESY* ; Saito, H. (Corresponding author)DESY*

2015

This record in other databases:  

Report No.: DESY-15-060; SFB-CPP-14-125; arXiv:1505.00279

Abstract: We demonstrate the suitability of tensor network techniques for describing the thermal evolution of lattice gauge theories. As a benchmark case, we have studied the temperature dependence of the chiral condensate in the Schwinger model, using matrix product operators to approximate the thermal equilibrium states for finite system sizes with non-zero lattice spacings. We show how these techniques allow for reliable extrapolations in bond dimension, step width, system size and lattice spacing, and for a systematic estimation and control of all error sources involved in the calculation. The reached values of the lattice spacing are small enough to capture the most challenging region of high temperatures and the final results are consistent with the analytical prediction by Sachs and Wipf over a broad temperature range.

Note: OA

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Contributing Institute(s):

1. NIC (ZEU-NIC)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)
2. SIQS - Simulators and Interfaces with Quantum Systems (600645) (600645)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2015

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Bañuls, M.  C. ; Cichy, K.>Extern* ; Cirac, J.  I. ; Jansen, K.DESY* ; Saito, H.DESY*
Thermal evolution of the Schwinger model with matrix product operators
Physical review / D 92(3), 034519 (2015) [10.1103/PhysRevD.92.034519]2015     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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