Understanding many-body physics in one dimension from the Lieb–Liniger model*
Jiang Yu-Zhua),b), Chen Yang-Yanga),b), Guan Xi-Wena),b)†
       
Contact divided by T̃ 2 versus chemical potential. The critical scaling behavior of the contact for the Lieb–Liniger gas is different from that for the 1D interacting Fermi gas.[ 28 ]