Critical Velocity in 3He-B Vibrating Wire Experiments as Analog of Vacuum Instability in a Slowly Oscillating Electric Field

Дата и время публикации : 1998-08-05T14:03:22Z

Авторы публикации и институты :
A. Calogeracos
G. E. Volovik

Ссылка на журнал-издание: J.Exp.Theor.Phys. 88 (1999) 40-45; Zh.Eksp.Teor.Fiz. 115 (1999) 70-79
Коментарии к cтатье: RevTex file, 6 pages, 4 figures
Первичная категория: cond-mat

Все категории : cond-mat, hep-ph, nucl-th, quant-ph

Краткий обзор статьи: The Lancaster experiments with a cylindrical wire moving in superfluid 3He-B are discussed, where the measured critical velocity of pair creation is much below the Landau critical velocity. The phenomenon is shown to be analogous to the instability of the electron-positron vacuum in an adiabatically alternating strong electric potential of both signs, where the positive- and negative-root levels cross and thus the instability treshold is twice less than in the conventional case of a single static potential well.

Category: Physics