Analysis of the Interplay of Quantum Phases and Nonlinearity Applied to Dimers with Anharmonic Interactions

TL;DR

This paper investigates how quantum phases and nonlinearity influence saturation effects and self-trapping in small quantum systems with anharmonic interactions, revealing phase-dependent control over system dynamics.

Contribution

It introduces a detailed analysis of the combined effects of quantum phases, nonlinearity, and saturation in small quantum systems, highlighting phase control over self-trapping phenomena.

Findings

Initial quantum phases significantly affect self-trapping dependence.

A minimum saturation value is required for self-trapping.

Phase diagrams illustrate control parameters influencing system behavior.

Abstract

We extend our analysis of the effects of the interplay of quantum phases and nonlinearity to address saturation effects in small quantum systems. We find that initial phases dramatically control the dependence of self-trapping on initial asymmetry of quasiparticle population and can compete or act with nonlinearity as well as saturation effects. We find that there is a minimum finite saturation value in order to obtain self-trapping that crucially depends on the initial quasiparticle phases and present a detailed phase-diagram in terms of the control parameters of the system: nonlinearity and saturation.