Superfluid nuclear matter calculations |
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| Affiliation: | 1. National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI-48824, USA;2. Institute of Nuclear Physics, PL-31-342 Kraków, Poland;1. I. Kant Baltic Federal University, Institute of Physics and Technology, Nevskogo st. 14, 236041 Kaliningrad, Russia;2. Dipartimento di Fisica, Università di Napoli “Federico II”, Italy;3. INFN Sez. di Napoli, Compl. Univ. di Monte S. Angelo, Ed. G., Via Cinthia, 9, I-80126 Napoli, Italy;4. Gran Sasso Science Institute (INFN), Viale F. Crispi, 7, I-67100 L''Aquila, Italy;5. Instituciò Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain;6. Institut de Ciencies de l''Espai (IEEC-CSIC), Campus UAB, Facultat de Ciencies, Torre C5-Par-2a pl, E-08193 Bellaterra, Barcelona, Spain;1. Matej Bel University, SK-97401 Banska Bystrica, Slovakia;2. National Research Nuclear University “MEPhI”, RU-115409 Moscow, Russia;1. NICPB, Rävala pst. 10, 10143 Tallinn, Estonia;2. Theoretical Particle Physics and Cosmology Group, Physics Department, King''s College London, London WC2R 2LS, United Kingdom;3. Theoretical Physics Department, CERN, Switzerland;4. Tartu Observatory, Tõravere 61602, Estonia;1. Department of Astronomy, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China;2. CAS Key Laboratory for Researches in Galaxies and Cosmology, School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, China;3. Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Chiba 277-8583, Japan;4. Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan;5. Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan;6. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA, UK;7. Department of Physics, Princeton University, Princeton, NJ 08544, USA;1. College of Bioresource Sciences, Nihon University, Fujisawa 252-8510, Japan;2. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;3. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan;4. Department of Physics, University of Wisconsin, Madison, WI 53706, USA;5. Department of Physics and OMEG Institute, Soongsil University, Seoul, 156-743, Republic of Korea;6. School of Physics, Int. Research Center for Big-Bang Cosmology and Element Genesis, Beihang University, Beijing 100083, China;7. Graduate School of Science, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;8. Center of Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA |
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| Abstract: | We present a method to calculate nuclear matter properties in the superfluid phase. The method is based on the use of self-consistent off-shell nucleon propagators in the T-matrix equation. Such a complete treatment of the spectral function is required below and around Tc due to a pseudogap formation in the spectral function. In the superfluid phase we introduce the anomalous self-energy in the fermion propagators and in the T-matrix equation, consistently with the strong coupling BCS equations. The equations for the nucleon spectral function include both a contribution of condensed and scattering pairs. The method is illustrated by numerical calculations. Above Tc pseudogap formation is visible in the spectral function and below Tc a superfluid gap also appears. |
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