Abstract
Abstract The correlation functions of density fluctuations associated with the particle-hole pairs in the intraband and interband are calculated. The correlation functions for the intraband yield the sound velocity (proportional to the mean atomic velocity) and diffusion (equal to the relaxation time of atoms multiplied by the square of the sound velocity). Those for the interband yield phonons and viscosity (equal to the Maxwell relaxation time multiplied by the square of the phonon velocity). Diffusion, viscosity, sound velocity, the mean atomic velocity and relaxation times obey the Vogel-Fulcher law. Phonons exist in both phases, but sound disappears below the freezing point.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
