CAJ | 학술논문

量子力学中超流和超导系统的拉格朗日密度不是相对论协变的，我们可以把它看作是在一定条件下某种相对论协变的拉格朗日密度的近似。基于这个方法本文提出了一个新的拉格朗日密度，比原来的多出一些项。从量子力学拉格朗日密度得到的运动方程是不完整的，它忽略了一些项。相对论协变的拉格朗日密度则解决了这些问题，使运动方程是完整的。在此基础上本文提出并研究了更一般的超流和超导拉格朗日密度及其动力学。
양자역학중초류화초도계통적랍격랑일밀도불시상대론협변적，아문가이파타간작시재일정조건하모충상대론협변적랍격랑일밀도적근사。기우저개방법본문제출료일개신적랍격랑일밀도，비원래적다출일사항。종양자역학랍격랑일밀도득도적운동방정시불완정적，타홀략료일사항。상대론협변적랍격랑일밀도칙해결료저사문제，사운동방정시완정적。재차기출상본문제출병연구료경일반적초류화초도랍격랑일밀도급기동역학。
The wel-known Lagrangian of current superfluid systems is not relativistic covariant, this paper gives a general relativistic covariant Lagrangian of superfluid systems, and natural y finds the non-relativistic Lagrangian and its al corresponding theories after making approximations. The equation of motion obtained from the old non-relativistic Lagrangian density is not complete. The new momentum and energy can return to the old expressions of superfluid systems under some conditions. This paper gives two different expressions of Lagrangian, gets the same equation, and finds its solutions. Using two different Lagrangian densities, this paper obtains different forces.