Chinese Physics C > 1988, Vol. 12 > Issue(S2): 131-136

The One Pion Exchange Potential at Finite Temperature

Chen Tao,
Su Rukeng

Fudan University, Shanghai

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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 Mπ( T) will become imaginary at the critical temperature T _c= 177 MeV. It means that the attractive OPEP will disappear at T _cand 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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沈阳化工大学材料科学与工程学院沈阳 110142

The One Pion Exchange Potential at Finite Temperature

Chen Tao
Su Rukeng

Fudan University, Shanghai

Received Date:1987-04-22

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 fieldMπ(T) will become imaginary at the critical temperatureT_c= 177 MeV. It means that the attractive OPEP will disappear atT_cand the Phase transition takes place.