Aarts, Gert, Allton, Chris, De Boni, Davide, Hands, Simon, Jager, Benjamin, Praki, Chrisanthi and Skullerud, Jon-Ivar (2017) Light baryons below and above the deconfinement transition: medium effects and parity doubling. Journal of High Energy Physics, 2017 (34). ISSN 1029-8479
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Abstract
We study what happens to the N , Δ and Ω baryons in the hadronic gas and the quark-gluon plasma, with particular interest in parity doubling and its emergence as the plasma is heated. This is done using simulations of lattice QCD, employing the FASTSUM anisotropic N f = 2 + 1 ensembles, with four temperatures below and four above the deconfinement transition temperature. Below T c we find that the positive-parity groundstate masses are largely temperature independent, whereas the negative-parity ones are reduced considerably as the temperature increases. This may be of interest for heavy-ion phenomenology. Close to the transition, the masses are nearly degenerate, in line with the expectation from chiral symmetry restoration. Above T c we find a clear signal of parity doubling in all three channels, with the effect of the heavier s quark visible.
Item Type: | Article |
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Keywords: | Lattice Quantum Field Theory; Phase Diagram of QCD; Quark-Gluon Plasma; Thermal Field Theory; |
Academic Unit: | Faculty of Science and Engineering > Theoretical Physics |
Item ID: | 11790 |
Identification Number: | 10.1007/JHEP06(2017)034 |
Depositing User: | Dr. Jonivar Skullerud |
Date Deposited: | 21 Nov 2019 15:15 |
Journal or Publication Title: | Journal of High Energy Physics |
Publisher: | Springer Verlag |
Refereed: | Yes |
Related URLs: | |
URI: | https://mu.eprints-hosting.org/id/eprint/11790 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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