Numerically Exact Study of Polarizabilities and Hyperpolarizabilities of Correlated Conjugated Organic Modelst

Abstract

Polarizabilities and Hyperpolarizabilities of conjugated organic chains are calculated using correlated model Hamiltonians. While correlations reduce the Polarizabilities and extend the range of linear response, the Hyperpolarizabilities essentially are unaffected by the same. This explains the apparently large Hyperpolarizabilities of conjugated electronic systems.

Key Words:

• polarizability
• hyperpolarizability
• correlated models
• conjugated organic systems.