Journal
PHYSICAL REVIEW C
Volume 92, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.92.055807
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Funding
- Ministry of Education, Culture, and Sports, Spain [FPA 2014-58-293-C2-1-P]
- Xunta de Galicia [INCITE09.296.035PR]
- Xunta de Galicia (Conselleria de Educacion)
- Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042]
- FEDER
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We investigate the role of pressure in a class of generalized Skyrme models. We introduce pressure as the trace of the spatial part of the energy-momentum tensor and show that it obeys the usual thermodynamical relation. Then, we compute analytically the mean-field equation of state in the high-and medium-pressure regimes by applying topological bounds on compact domains. The equation of state is further investigated numerically for the charge-one Skyrmions. We identify which term in a generalized Skyrme model is responsible for which part in the equation of state. Further, we compare our findings with the corresponding results in the Walecka model.
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