Gator : A Python-driven program for spectroscopy simulations using correlated wave functions

• The Gator program has been developed for computational spectroscopy and calculations of molecular properties using real and complex propagators at the correlated level of wave function theory. Currently, the focus lies on methods based on the algebraic diagrammatic construction (ADC) scheme up to the third order of perturbation theory. An auxiliary Fock matrix-driven implementation of the second-order ADC method for excitation energies has been realized with an underlying hybrid MPI/OpenMP parallelization scheme suitable for execution in high-performance computing cluster environments. With a modular and object-oriented program structure written in a Python/C++ layered fashion, Gator additionally enables time-efficient prototyping of novel scientific approaches, as well as interactive notebook-driven training of students in quantum chemistry. This article is categorized under: Computer and Information Science > Computer Algorithms and Programming Electronic Structure Theory > Ab Initio Electronic Structure Methods Software > Quantum Chemistry.

Subject headings

NATURVETENSKAP  -- Kemi -- Teoretisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Keyword

computational spectroscopy

electronic structure theory

propagator theory

response theory

Algebra

Calculations

Cluster computing

Computation theory

Computer software

Electronic structure

High level languages

Perturbation techniques

Quantum chemistry

Wave functions

Ab initio electronic structure methods

Algebraic diagrammatic constructions

Correlated wave functions

High-performance computing clusters

Molecular properties

Object-oriented program

Object oriented programming

Publication and Content Type

ref (subject category)

art (subject category)