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Nucleon Mass Splitting at Finite Isospin Chemical Potential |
| CHANG Sheng1;LIU Ji-Feng1;ZHUANG Peng-Fei2 |
| 1College of Physics and Electronic Engineering, Guangxi Normal University, Guilin 5410042Department of Physics, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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CHANG Sheng, LIU Ji-Feng, ZHUANG Peng-Fei 2008 Chin. Phys. Lett. 25 55-57 |
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Abstract We investigate nucleon mass splitting at finite isospin chemical potential in the frame of the two-flavour Nambu--Jona-Lasinio model. It is analytically proven that in the phase with explicit isospin symmetry breaking, the proton mass decreases and the neutron mass increases linearly in the isospin
chemical potential.
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| Keywords:
11.10.Wx
12.38.-t
25.75.Nq
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Received: 14 September 2007
Published: 27 December 2007
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| PACS: |
11.10.Wx
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(Finite-temperature field theory)
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12.38.-t
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(Quantum chromodynamics)
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25.75.Nq
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(Quark deconfinement, quark-gluon plasma production, and phase transitions)
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