Tunneling of the Dislocations in ³He Crystals

Abstract

Tunneling of dislocations in bcc ³He is discussed from the stand point of Zener tunneling theory. In this tunneling penetrate Fermi particles of the massive thirring model which is equivalent to the Frenkel-Kontorova model. Quantum corrections are important in determing the energy value of solitons, i.e., penetrating Fermi particles which have weak attractive interactions.