| Issue |
Europhys. Lett.
Volume 33, Number 7, March I 1996
|
|
|---|---|---|
| Page(s) | 503 - 508 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i1996-00369-6 | |
| Published online | 01 September 2002 | |
Bosonic heat bath associated with a moving soliton in a fermionic system
1
School of Mathematical and Physical Sciences,
The University of Sussex, Brighton BN1 9QH, Sussex, UK
2
Ruhr Universität Bochum, Fakultat für Physik und Astronomie,
D-44780 Bochum, Germany
Received:
8
August
1995
Accepted:
12
January
1996
When a soliton (such as a kink or vortex) in a condensed fermionic system moves, it produces particle-hole pairs. These approximately behave as a bosonic field, equivalent to a bath of harmonic oscillators and an effective bosonization of the fermion degrees of freedom very naturally arises. This work considers the theory of a moving soliton and an expression is given for the quantity, known as the spectral function, that characterises the effective bosons in the system. For a specific system possessing a soliton, the spectral function is evaluated.
PACS: 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics
© EDP Sciences, 1996
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