Open-boundary conditions in the deconfined phase.
- Florio A 1Laboratory of Particle Physics and Cosmology, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
- Kaczmarek O 2Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan, 430079 China.
- Mazur L 3Fakultät für Physik, Universität Bielefeld, 33615 Bielefeld, Germany.
- 2020-01-21
Published in:
- The European physical journal. C, Particles and fields. - 2019
English
In this work, we consider open-boundary conditions at high temperatures, as they can potentially be of help to measure the topological susceptibility. In particular, we measure the extent of the boundary effects at and . In the first case, it is larger than at while we find it to be smaller in the second case. The length of this "boundary zone" is controlled by the screening masses. We use this fact to measure the scalar and pseudo-scalar screening masses at these two temperatures. We observe a mass gap at but not at . Finally, we use our pseudo-scalar channel analysis to estimate the topological susceptibility. The results at are in good agreement with the literature. At , they appear to suffer from topological freezing, which prevents us from providing a precise determination of the topological susceptibility.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1140/epjc/s10052-019-7564-z
- PMID 31956279
- Persistent URL
- https://sonar.ch/global/documents/212590
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