Strange matter at finite temperatures |
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| Institution: | 1. The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark;2. Central Institute for Nuclear Research, PF 1, Rossendorf, DDR-8051 Dresden, GDR;1. Frankfurt Institute for Advanced Studies, J.W. Goethe University, 60438 Frankfurt am Main, Germany;2. Center for Computational Astrophysics, National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo, 181-8588, Japan;3. Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501, Japan;4. Department of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan;5. Faculty of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan;1. Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan;2. KEK Theory Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1, Oho, Ibaraki, 305-0801, Japan;3. Graduate University for Advanced Studies (SOKENDAI), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan;1. National Science Centre, Kharkov Institute of Physics and Technology, 61108 Akademicheskaya 1, Kharkov, Ukraine;2. V.N. Karazin Kharkov National University, Dept. of Physics and Technology, 31 Kurchatov, 61108, Kharkov, Ukraine;3. Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany;4. DSM/IRFU/SPhN, CEA/Saclay, 91191 Gif-sur-Yvette, France;5. Univ Paris-Sud, CNRS/IN2P3, Institut de Physique Nucléaire, UMR 8608, 91406 Orsay, France;1. College of Bioresource Sciences, Nihon University, Fujisawa 252-0880, Japan;2. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;3. Department of Physics, University of Wisconsin, Madison, WI 53706, USA;4. Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;5. Beihang University, School of Physics, International Research Center for Big-Bang Cosmology and Element Genesis, Beijing 100083, China;6. Department of Physics, Soongsil University, Seoul, 156-743, Republic of Korea;7. Center of Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA |
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| Abstract: | The properties of strange quark matter at finite temperatures and in equilibrium with respect to weak interaction are explored on the basis of the MIT bag model picture of QCD. Furthermore, to determine the stability of strange quark matter, analogous investigations are also performed for nuclear matter within Walecka's model field theory. It is found that strange quark matter can be stable at zero external pressure only for temperatures below 20 MeV. The existence of this limiting temperature is a consequence of the Van der Waals like behaviour of nuclear matter at low temperatures. |
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