Chiral bag plus skyrmion hybrid model for nucleons |
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| Institution: | 1. Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;2. Department of Physics, Tokyo Metropolitan University, Setagaya, Tokyo158, Japan;1. Porter School of Earth and Environmental Studies, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel;2. School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel;1. Service de médecine interne, centre hospitalier universitaire vaudois (CHUV), rue du Bugnon, 46, 1011 Lausanne, Suisse;2. Service des urgences adultes, centre hospitalier universitaire Antoine-Béclère, Assistance publique–Hôpitaux de Paris (AP–HP), 157, rue de la Porte de Trivaux, 92140 Clamart, France;3. Service de médecine génétique, centre hospitalier universitaire vaudois (CHUV), rue du Bugnon, 46, 1011 Lausanne, Suisse;1. Department of Neuroscience, Columbia University, New York, NY, USA;2. Mortimer B. Zuckerman Mind Brain Behavior Institute, New York, NY, USA;3. Kavli Institute for Brain Science, New York, NY, USA;1. Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland;2. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA;3. Climate and Environmental Physics, Physics Institute, and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland;4. Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany;5. Climate Change Research Centre, University of New South Wales, Sydney, Australia;6. ARC Centre of Excellence for Climate Extremes, Australia;7. Godwin Laboratory for Palaeoclimate Research, Earth Sciences Department, University of Cambridge, Cambridge, United Kingdom;8. College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, USA |
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| Abstract: | The chiral bag plus skyrmion hybrid model is studied as a model for nucleons. The hybrid model is solved numerically, where great care has been taken to remove the divergence in the boundary condition at the chiral bag surface for the nonlinear differential equation of the skyrmion. The numerical results for the nucleon energy turn out to be finite for all bag radii, differing from the case of the linearized chiral model. With a suitable choice of the bag parameter (volume term), the nucleon mass, radius and the axial vector coupling constant gA come out to be very promising. |
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