Relativistic two-fluid hydrodynamics with quantized vorticity from the nonlinear Klein-Gordon equation  

作　　者：Chi Xiong Kerson Huang 

机构地区：[1]Minjiang Collaborative Center for Theoretical Physics,Minjiang University,Fujian 350108,China [2]Institute of Advanced Studies&School of Physical and Mathematical Science,Nanyang Technological University,639673,Singapore [3]Physics Department,Massachusetts Institute of Technology,Cambridge,MA 02139,United States of America

出　　处：《Communications in Theoretical Physics》2025年第2期159-169,共11页理论物理通讯(英文版)

摘　　要：We consider a relativistic two-fluid model of superfluidity,in which the superfluid is described by an order parameter that is a complex scalar field satisfying the nonlinear Klein-Gordon equation(NLKG).The coupling to the normal fluid is introduced via a covariant current-current interaction,which results in the addition of an effective potential,whose imaginary part describes particle transfer between superfluid and normal fluid.Quantized vorticity arises in a class of singular solutions and the related vortex dynamics is incorporated in the modified NLKG,facilitating numerical analysis which is usually very complicated in the phenomenology of vortex filaments.The dual transformation to a string theory description(Kalb-Ramond)of quantum vorticity,the Magnus force,and the mutual friction between quantized vortices and normal fluid are also studied.

关 键 词：relativistic superfluidity nonlinear Klein-Gordon field theory quantized vortices two-fluid model Kalb-Ramond field global string 

分 类 号：O17[理学—数学]