Impacto
Downloads
Downloads per month over past year
Cortés, Santiago and Gómez Nicola, Ángel and Morales, John (2016) Chiral symmetry restoration for the large-N pion gas. Physical review D, 94 (11). ISSN 2470-0010
Preview |
PDF
333kB |
Official URL: http://dx.doi.org/10.1103/PhysRevD.94.116008
Abstract
We analyze chiral restoration within the O(N + 1)/ O(N) nonlinear sigma model for large N as an effective theory for low-energy QCD at finite temperature T. The free energy is constructed diagrammatically to O(TM^3) in the pion mass expansion, which allows us to derive the quark condensate and the scalar susceptibility in the chiral limit. At this order, we do not have to deal with renormalization, either from divergences from mass tadpoles or from those of higher order loop contributions. Our results for the critical behavior are consistent with expectations from lattice analysis and with previous works where the susceptibility is saturated by the thermal f₀(500) pole.
Item Type: | Article |
---|---|
Additional Information: | © 2016 Amer Physical Soc. |
Uncontrolled Keywords: | Nonlinear sigma-model; Finite-temperature; Perturbation-theory; One-loop; Phase-transition; Expansion; Limit |
Subjects: | Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics |
ID Code: | 45686 |
Deposited On: | 20 Dec 2017 13:10 |
Last Modified: | 10 Dec 2018 15:09 |
Origin of downloads
Repository Staff Only: item control page