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Topological defects in 1D potential and superlattices

✍ Scribed by L Gumen; E Feldman; V Yurchenko; A Krokhin; P Pereyra


Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
83 KB
Volume
17
Category
Article
ISSN
1386-9477

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We study topological defects as inhomogeneous (localized) condensates of particles in quantum field theory. In the framework of the closed-time-path formalism, we consider explicitly a (1 + 1) dimensional λψ 4 model and construct the Heisenberg picture field operator ψ in the presence of kinks. We s

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The dynamics of topological defects (dislocations) in charge density waves (CDW's) is largely affected by the quasi-particle dynamics in the cores of the dislocations. The dislocations mediate the conversion of the electron number between condensate and quasi-particle sub-systems. This is especially