Renormalization of the vortex diffusion constant in superfluid films

..T/sub c//sup -/, we find a universal cusp singularity for the diffusion constant, reaching a finite value at T/sub c/. -->

ISSN:	0163-1829
DOI:	10.1103/physrevb.23.3483
Přístupová URL adresa:	https://explore.openaire.eu/search/publication?articleId=doi_________::ec41bd0005e8e615493a0c7ccd3240e1 https://doi.org/10.1103/physrevb.23.3483
Rights:	CLOSED
Přírůstkové číslo:	edsair.doi...........ec41bd0005e8e615493a0c7ccd3240e1
Autor:	Annette Zippelius, R. G. Petschek
Rok vydání:	1981
Předmět:	Superfluidity Langevin equation Renormalization Physics Helium-4 Condensed matter physics Diffusion (business) Fick's laws of diffusion Superfluid helium-4 Vortex
Zdroj:	Physical Review B. 23:3483-3493
ISSN:	0163-1829
DOI:	10.1103/physrevb.23.3483
Popis:	We study the dynamics of vortices in superfluid helium films, using a phenomenological Langevin equation to account for diffusive as well as convective motion of vortices. We show that in the long-wavelength limit, dynamic screening effects give rise to a renormalization of the diffusion constant, while the convective parameter remains unchanged. The critical behavior is analyzed with renormalization-group methods. In the limit T..-->..T/sub c//sup -/, we find a universal cusp singularity for the diffusion constant, reaching a finite value at T/sub c/.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ec41bd0005e8e615493a0c7ccd3240e1 https://doi.org/10.1103/physrevb.23.3483 Zobrazit plný text záznamu