### 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 |
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Pages (from-to) | 147-150 |

Number of pages | 4 |

Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |

Volume | 130 |

Issue number | 3 |

DOIs | |

Publication status | Published - Jul 4 1988 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Physics Letters, Section A: General, Atomic and Solid State Physics*,

*130*(3), 147-150. https://doi.org/10.1016/0375-9601(88)90418-5

**Exact self-propagators for quasiparticle motion on a chain with alternating site energies or intersite interactions.** / Kovanis, V. I.; Kenkre, V. M.

Research output: Contribution to journal › Article

*Physics Letters, Section A: General, Atomic and Solid State Physics*, vol. 130, no. 3, pp. 147-150. https://doi.org/10.1016/0375-9601(88)90418-5

}

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.

UR - http://www.scopus.com/inward/record.url?scp=0009534876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0009534876&partnerID=8YFLogxK

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

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

M3 - Article

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 -