The One Pion Exchange Potential at Finite Temperature

  • By means of the imaginary time Green’s function method, we extend the one pion exchange potential (OPEP) of the nudeon-nucieon interaction to the finite temperature. We sum up ail the bubble diagrams and find that the temperature effect on OPEP is small at the low temperature region but large at the high temperature region. The effective mass of pion field (T) will become imaginary at the critical temperature Tc = 177 MeV. It means that the attractive OPEP will disappear at Tc and the Phase transition takes place.
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Chen Tao and Su Rukeng. The One Pion Exchange Potential at Finite Temperature[J]. Chinese Physics C, 1988, 12(S2): 131-136.
Chen Tao and Su Rukeng. The One Pion Exchange Potential at Finite Temperature[J]. Chinese Physics C, 1988, 12(S2): 131-136. shu
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Received: 1987-04-22
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    The project supported by National Natural Science Foundation of China

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The One Pion Exchange Potential at Finite Temperature

  • Fudan University, Shanghai
Fund Project:  The project supported by National Natural Science Foundation of China

Abstract: By means of the imaginary time Green’s function method, we extend the one pion exchange potential (OPEP) of the nudeon-nucieon interaction to the finite temperature. We sum up ail the bubble diagrams and find that the temperature effect on OPEP is small at the low temperature region but large at the high temperature region. The effective mass of pion field (T) will become imaginary at the critical temperature Tc = 177 MeV. It means that the attractive OPEP will disappear at Tc and the Phase transition takes place.

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