Revealing Roaming on the Double Morse Potential Energy Surface with Lagrangian Descriptors

TL;DR

This paper investigates the roaming dynamics in a two-dimensional Morse potential energy surface using Lagrangian descriptors to analyze phase space structures and transition mechanisms between potential wells.

Contribution

It introduces the application of Lagrangian descriptors to study roaming phenomena on a double Morse potential energy surface, revealing phase space structures involved in well transference.

Findings

Identified phase space structures governing roaming dynamics.

Demonstrated the effectiveness of Lagrangian descriptors in this context.

Provided insights into transition mechanisms between potential wells.

Abstract

In this paper, we analyse the phase space structure of the roaming dynamics in a two degree of freedom potential energy surface consisting of two identical planar Morse potentials separated by a distance. This potential energy surface was previously studied in [1], and it has two potential wells surrounded by an unbounded flat region containing no critical points. We study the phase space mechanism for the transference between the wells using the method of Lagrangian descriptors.