The short-range correlation of asymmetric nucleonic matter at finite temperature: The LOCV approach

摘要

The short-range correlation of the asymmetricnucleonicmatter (ASM) is perused at finite temperature in the lowest order constrained variational (LOCV) method. It is observed that, by increasing the temperature, theLOCV ASMstatic non-central distribution functions become weak. For small inter-particle distances, a universal behavior is found for theLOCV ASMstate-dependent density distributions. Using the expectation value of the one-pionexchange part of theAV18interaction, the scaling factor of thepionabsorption cross section (the number ofquasideuterons), for the different proton to neutron ratiosR, is also estimated in theLOCVformalism. It is shown that, by increasing (decreasing) the ratioR(the temperature), the number ofquasideuterons grows. Considering the scaling factor, theBethe-Levinger(BL) factor for theASMis also investigated. It is demonstrated that, at the saturation density and temperature 20 MeV, theBLfactor for theASMwithR=1(0.5)becomes 4.3 (4.5).