Counting the number of excited states in organic semiconductor systems using topology

Michael J. Catanzaro, Tian Shi, Sergei Tretiak, Vladimir Y. Chernyak

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Exciton scattering theory attributes excited electronic states to standing waves in quasi-one-dimensional molecular materials by assuming a quasi-particle picture of optical excitations. The quasi-particle properties at branching centers are described by the corresponding scattering matrices. Here, we identify the topological invariant of a scattering center, referred to as its winding number, and apply topological intersection theory to count the number of quantum states in a quasi-one-dimensional system.

Original languageEnglish
Article number084113
JournalJournal of Chemical Physics
Volume142
Issue number8
DOIs
Publication statusPublished - 28 Feb 2015
Externally publishedYes

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