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Probing parity doubling in nucleons at high temperature

Gert Aarts Orcid Logo, Chris Allton Orcid Logo, Simon Hands, Benjamin Jaeger, Chrisanthi Praki, Jon-Ivar Skullerud

Proceedings of The 33rd International Symposium on Lattice Field Theory — PoS(LATTICE 2015), Volume: 251

Swansea University Authors: Gert Aarts Orcid Logo, Chris Allton Orcid Logo, Simon Hands, Benjamin Jaeger, Chrisanthi Praki

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DOI (Published version): 10.22323/1.251.0183

Abstract

The spectrum of nucleons and their parity partners is studied as a function of temperature spanning the deconfinement transition. We analyse our results using the correlation functions directly,exponential fits in the hadronic phase, and the Maximum Entropy Method. These techniques allindicate that...

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Published in: Proceedings of The 33rd International Symposium on Lattice Field Theory — PoS(LATTICE 2015)
ISSN: 1824-8039
Published: Trieste, Italy Sissa Medialab 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa60265
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Abstract: The spectrum of nucleons and their parity partners is studied as a function of temperature spanning the deconfinement transition. We analyse our results using the correlation functions directly,exponential fits in the hadronic phase, and the Maximum Entropy Method. These techniques allindicate that there is degeneracy in the parity partners’ channels in the deconfined phase. Thisis in accordance with the expectation that there is parity doubling and chiral symmetry in thedeconfined phase. In the hadronic phase, we also find that the nucleon ground state is largely independent of temperature, whereas there are substantial temperature effects in the negative parity channel. All results are obtained using our FASTSUM 2+1 flavour ensembles.
College: Faculty of Science and Engineering
Funders: This work used the DiRAC BlueGene/Q Shared Petaflop system at the University of Edinburgh, operated by the Edinburgh Parallel Computing Centre on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment was funded by BIS National E-infrastructure capital grant ST/K000411/1, STFC capital grant ST/H008845/1, and STFC DiRAC Operations grants ST/K005804/1 and ST/K005790/1. DiRAC is part of the National E-Infrastructure. We acknowledge the PRACE Grants 2011040469 and Pra05_1129, European Union Grant Agreement No. 238353 (ITN STRONGnet), the STFC grant ST/L000369/1, and All Souls College Oxford, HPC Wales, the Irish Centre for High-End Computing, the Leverhulme Trust, the Royal Society, STFC, and the Wolfson Foundation for support.