pysisyphus - Exploring Potential Energy Surfaces in Ground- and Excited
States
- Johannes Steinmetzer
, - Stephan Kupfer
, - Stefanie Gräfe
Stephan Kupfer
![](https://d197for5662m48.cloudfront.net/assets/icons/omniauth/orcid-ca37582cd91a671ed5cec57770e0e96c01b4b79b8b5b75d8598fc1ddac18c974.svg)
Friedrich Schiller University Jena, Friedrich-Schiller-Universität Jena
Author ProfileAbstract
Predicting the energetics of chemical transformations requires
localizing stationary points on a potential energy surface. Whereas
educts and products of a chemical reaction may be known, transition
state optimization is challenging, as good guesses may be unavailable.
Extending stationary point searches to excited states leads to
additional difficulties as several states may be close in energy,
requiring efficient state-tracking. Herein we report the implementation
of pysisyphus, an external optimizer, that allows not only the
localization of stationary points in the ground state, but also for
excited states by providing several state-tracking algorithms.
Pysisyphus offers all necessary tools for calculating reaction paths
starting from the optimization of the reactants, running chain-of-states
methods like the nudged elastic band or the growing string method with
subsequent transition state optimization and a concluding intrinsic
reaction coordinate calculation.15 May 2020Submitted to International Journal of Quantum Chemistry 18 May 2020Submission Checks Completed
18 May 2020Assigned to Editor
20 May 2020Reviewer(s) Assigned
14 Jun 2020Review(s) Completed, Editorial Evaluation Pending
23 Jun 2020Editorial Decision: Revise Minor
24 Jun 20201st Revision Received
24 Jun 2020Submission Checks Completed
24 Jun 2020Assigned to Editor
24 Jun 2020Reviewer(s) Assigned
24 Jun 2020Review(s) Completed, Editorial Evaluation Pending
24 Jun 2020Editorial Decision: Accept
05 Feb 2021Published in International Journal of Quantum Chemistry volume 121 issue 3. 10.1002/qua.26390