Probing parity doubling in nucleons at high temperature
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 all indicate that there is degeneracy in the parity partners' channels in the deconfined phase. This is in accordance with the expectation that there is parity doubling and chiral symmetry in the deconfined 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.
Cite
@article{arxiv.1510.04040,
title = {Probing parity doubling in nucleons at high temperature},
author = {Gert Aarts and Chris Allton and Simon Hands and Benjamin Jäger and Chrisanthi Praki and Jon-Ivar Skullerud},
journal= {arXiv preprint arXiv:1510.04040},
year = {2015}
}
Comments
Proceedings of the 33rd International Symposium on Lattice Field Theory, Kobe, Japan, 14-18 July 2015