Drivers (qiskit_nature.second_q.drivers)

Driver Base Class

BaseDriver	Base class for Qiskit Nature drivers.
VibrationalStructureDriver	Base class for Qiskit Nature's vibrational structure drivers.
ElectronicStructureDriver	Base class for Qiskit Nature's electronic structure drivers.

Driver Common

MethodType	MethodType Enum
InitialGuess	Initial Guess Enum

Drivers

The drivers in the chemistry module obtain their information from classical ab-initio programs or libraries. Several drivers, interfacing to common programs and libraries, are available. To use the driver its dependent program/library must be installed. See the relevant installation instructions below for your program/library that you intend to use.

• Gaussian™ 16 Installation
• Psi4 Installation
• PYSCF Installation

Electronic Structure Drivers

GaussianDriver	Qiskit Nature driver using the Gaussian™ 16 program.
Psi4Driver	Qiskit Nature driver using the Psi4 program.
PySCFDriver	A Second-Quantization driver for Qiskit Nature using the PySCF library.

Vibrational Structure Drivers

GaussianForcesDriver

Gaussian™ 16 forces driver.

General Driver

The GaussianLogDriver allows an arbitrary Gaussian Job Control File to be run and return a GaussianLogResult containing the log as well as ready access certain data of interest that is parsed from the log.

GaussianLogDriver	Gaussian™ 16 log driver.
GaussianLogResult	Result for Gaussian™ 16 log driver.