Competition between inter- and intra-molecular energy exchanges in a simple quantum model of a dimer

Anna Napoli, Cusati, Napoli, Messina

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We propose a fully quantum model to describe the dynamics of a possible radiationless energy transfer process between identical and nearly localized molecules or monomers coupled through a dipole–dipole term. The system is studied as an environmentally isolated dimeric pair and we find that its dynamics exhibits a competition between the process ruling out the transfer of energy among different degrees of freedom of a given monomer and the one steering the intermolecular passage of excitations from a monomer to the other one. Such a competition is quantitatively characterized investigating on the temporal behaviour of quantum covariances of some couples of appropriate observables having a clear physical meaning
Original languageEnglish
Pages (from-to)3-8
Number of pages6
JournalJournal of Molecular Structure
Volume769
Publication statusPublished - 2006

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

Cite this

Competition between inter- and intra-molecular energy exchanges in a simple quantum model of a dimer. / Napoli, Anna; Cusati; Napoli; Messina.

In: Journal of Molecular Structure, Vol. 769, 2006, p. 3-8.

Research output: Contribution to journalArticle

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AB - We propose a fully quantum model to describe the dynamics of a possible radiationless energy transfer process between identical and nearly localized molecules or monomers coupled through a dipole–dipole term. The system is studied as an environmentally isolated dimeric pair and we find that its dynamics exhibits a competition between the process ruling out the transfer of energy among different degrees of freedom of a given monomer and the one steering the intermolecular passage of excitations from a monomer to the other one. Such a competition is quantitatively characterized investigating on the temporal behaviour of quantum covariances of some couples of appropriate observables having a clear physical meaning

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