TY - JOUR
T1 - [Formula Presented]-scattering lengths at finite temperature
AU - Kaiser, N.
N1 - Funding Information:
*Supported in part by the Federal Ministry for Research and Technology (BMFT), grant number 06 HD 742, and the Deutsche Forschungsgemeinschaft, grant number Hu 233/4-3. f Present address: Gesellschaft fiir Schwerionenforschung PO. Box 110552, D-64220 Darmstadt, Germany. *On leave from Huazhong Normal University, Wuhan, China; Alexander von Humboldt fellow. Present address: Institut fiir The-oretische Physik, Universitat Regensburg, D-93040 Regensburg, Germany. s Present address: Sektion Physik der Universitat, Univer-sittitsplatz 1, D-1805 1 Restock, Germany.
PY - 1999
Y1 - 1999
N2 - We calculate in the one-loop approximation of chiral perturbation theory the temperature dependence of the S- and P-wave [Formula Presented]-scattering lengths. We find that the isospin-zero S-wave scattering length [Formula Presented] stays constant at the level of 2% for temperatures [Formula Presented]. In contrast to this the isospin-two S-wave scattering length [Formula Presented] decreases in magnitude by about 40% and the isospin-one P-wave scattering length [Formula Presented] increases by about 10% for [Formula Presented] We also compare with the temperature dependence of the quark condensate [Formula Presented] and the pion decay constant [Formula Presented]
AB - We calculate in the one-loop approximation of chiral perturbation theory the temperature dependence of the S- and P-wave [Formula Presented]-scattering lengths. We find that the isospin-zero S-wave scattering length [Formula Presented] stays constant at the level of 2% for temperatures [Formula Presented]. In contrast to this the isospin-two S-wave scattering length [Formula Presented] decreases in magnitude by about 40% and the isospin-one P-wave scattering length [Formula Presented] increases by about 10% for [Formula Presented] We also compare with the temperature dependence of the quark condensate [Formula Presented] and the pion decay constant [Formula Presented]
UR - http://www.scopus.com/inward/record.url?scp=0033247437&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.59.2945
DO - 10.1103/PhysRevC.59.2945
M3 - Article
AN - SCOPUS:0033247437
SN - 0556-2813
VL - 59
SP - 2945
EP - 2947
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 5
ER -