准粒子玻色凝聚的特性
The peculiarities of Bose-condensation of quasiparticles
摘要：
本文试图讨论粒子和准粒子的玻色-爱因斯坦凝聚过程的差别。得到了玻色凝聚体的粒子数与系统中粒子总数的关系式。这个方程也适用于准粒子的情况，考虑到它们是由抽运产生的，以及系统中存在平衡热激发。通过对这两个方程的分析，得到了抽运准粒子的化学势及其在凝聚体中的数目与抽运强度的函数关系，表明低能准粒子的玻色凝聚过程在任意温度下开始并进行。
英文摘要：
An attempt is made to consider the difference between the proccesses of the Bose-Einstein condensation of particles and quasiparticles. An equation for particle number of the Bose-condensate as a function of the total number of particles in the system is obtained. This equation is also written for the caseof quasiparticles with taking into account their creation by pumping and the existence ofequilibriumthermal excitations in the system. From the analysis of both these equations the chemical potential of pumped quasiparticles and their number in the condensate as a function of pumping intensity is found. It is shown that for low energy quasiparticles the proccess of Bose-condensation begins and proceeds at arbitrary temperatures high enough included.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
