This note deals with the basics of
quantum chemistry, beginning with introductory theory and methods. It covers the
Schrödinger equation, the Hartree-Fock approach, the use of basis sets and
pseudopotentials. This, along with more advanced topics such as Density
Functional Theory (DFT), multiconfigurational self-consistent field (MCSCF)
methods, as well as techniques for performing calculations for excited states,
introduces solvation models, and global optimization methods, among other
things, and discusses in some detail the GAMESS package in computational
chemistry. The book provides a good framework for beginners, while advanced
students can find appropriate theoretical backbones to support their practical
quantum chemical research.
This note
is concerned with the application of quantum mechanics to many-electron systems
like atoms and molecules. Stationary as well as time-dependent states have been
covered, emphasizing in particular electronic and vibrational states. The
following topics have been dealt with: the necessity of quantum mechanics,
properties of the wavefunction, kinetic energy, tunneling, and the variation
principle. It includes applications of symmetry and group theory in quantum
mechanics and incorporates them with the Schrödinger equation. It also includes
time-dependent quantum chemistry-including propagation of density matrices and
time evolution of probability distributions. The target of the note is aimed at
those who seek to understand the complexities of many-body systems in quantum
chemistry.
The
book deals with the topics that are fundamentally related to the
theoretical foundations as well as innovative quantum chemistry
applications in molecular research. It caters to advanced topics, such
as numerical solution of ordinary differential equations with spectral
methods, use of pseudopotentials in composite methods, and quantum
chemical calculations for various chemical systems, including
exploration of molecular mechanisms involved in DNA mutations, charge
carrier mobility in organic electronics, and compounds of high energy
density. This book is designed for researchers and students who seek the
application of quantum chemistry to advanced topics in materials
science, biochemistry, and molecular engineering.