TY - JOUR

T1 - Exact self-propagators for quasiparticle motion on a chain with alternating site energies or intersite interactions

AU - Kovanis, V. I.

AU - Kenkre, V. M.

PY - 1988/7/4

Y1 - 1988/7/4

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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U2 - 10.1016/0375-9601(88)90418-5

DO - 10.1016/0375-9601(88)90418-5

M3 - Article

AN - SCOPUS:0009534876

VL - 130

SP - 147

EP - 150

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

SN - 0375-9601

IS - 3

ER -