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 -