Mantovani Sarti, V. and Drago, A. (2013) A chiral quark-soliton model with broken scale invariance for nuclear matter. Il nuovo cimento C, 36 (1). pp. 305-307. ISSN 1826-9885
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Abstract
Soliton models based on the linear σ-model fail to describe nuclear matter already at ρ ∼ ρ0 due to the restrictions on the scalar field dynamics imposed by the Mexican hat potential. To overcome this problem we used a chiral Lagrangian, including a logarithmic potential associated with the breaking of scale invariance, based on quarks interacting with chiral fields, σ and π, and with vector mesons. Using the Wigner-Seitz approximation to mimic a dense system, we show that the model admits stable solitonic solutions at higher densities with respect to the linear-σ model and that the introduction of vector mesons allows to obtain saturation. This result has never been obtained before in similar approaches.
| Item Type: | Article |
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| Uncontrolled Keywords: | Chiral Lagrangians ; Nuclear matter-equations of state ; Hadrons-nuclear forces |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 03 May 2020 12:32 |
| Last Modified: | 03 May 2020 12:32 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/18131 |
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