Exact self-propagators for quasiparticle motion on a chain with alternating site energies or intersite interactions

V. I. Kovanis; V. M. Kenkre

doi:10.1016/0375-9601(88)90418-5

Exact self-propagators for quasiparticle motion on a chain with alternating site energies or intersite interactions

V. I. Kovanis, V. M. Kenkre

Department of Physics

Research output: Contribution to journal › Article

15 Citations (Scopus)

Abstract

We present exact calculations of the amplitude and the probability self-propagators for two model systems. Both systems consist of a quasiparticle moving among the sites of an infinite linear chain via nearest-neighbour matrix elements. In one model, the site energies alternate in space but the intersite interactions are all the same. In the other model, the interactions alternate but the site energies are all the same. Similarities and differences are explored and the extreme parameter limits are studied.

Original language	English
Pages (from-to)	147-150
Number of pages	4
Journal	Physics Letters A
Volume	130
Issue number	3
DOIs	https://doi.org/10.1016/0375-9601(88)90418-5
Publication status	Published - Jul 4 1988

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ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Kovanis, V. I., & Kenkre, V. M. (1988). Exact self-propagators for quasiparticle motion on a chain with alternating site energies or intersite interactions. Physics Letters A, 130(3), 147-150. https://doi.org/10.1016/0375-9601(88)90418-5

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N2 - We present exact calculations of the amplitude and the probability self-propagators for two model systems. Both systems consist of a quasiparticle moving among the sites of an infinite linear chain via nearest-neighbour matrix elements. In one model, the site energies alternate in space but the intersite interactions are all the same. In the other model, the interactions alternate but the site energies are all the same. Similarities and differences are explored and the extreme parameter limits are studied.

AB - We present exact calculations of the amplitude and the probability self-propagators for two model systems. Both systems consist of a quasiparticle moving among the sites of an infinite linear chain via nearest-neighbour matrix elements. In one model, the site energies alternate in space but the intersite interactions are all the same. In the other model, the interactions alternate but the site energies are all the same. Similarities and differences are explored and the extreme parameter limits are studied.

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10.1016/0375-9601(88)90418-5