Quantum Chemistry

2016-2017
Particles and waves, principles of quantum mechanics, stationary states. Electronic structure of atoms and molecules. The chemical bond. Approximate methods. Vibrational, rotational and electronic transitions. Spectroscopy.

Suggestions

Observation of the rare B-s(0)->mu(+)mu(-) decay from the combined analysis of CMS and LHCb data
Khachatryan, V.; et. al. (2015-06-01)
The standard model of particle physics describes the fundamental particles and their interactions via the strong, electromagnetic and weak forces. It provides precise predictions for measurable quantities that can be tested experimentally. The probabilities, or branching fractions, of the strange B meson (B-s(0)) and the B-0 meson decaying into two oppositely charged muons (mu(+) and mu(-)) are especially interesting because of their sensitivity to theories that extend the standard model. The standard model...
Entanglement transformations
Kıntaş, Seçkin; Turgut, Sadi; Department of Physics (2009)
Entanglement is a special correlation of the quantum states of two or more particles. It is also a useful resource enabling us to complete tasks that cannot be done by classical means. As a result, the transformation of entangled states of distant particles by local means arose as an important problem in quantum information theory. In this thesis, we first review some of the studies done on the entanglement transformations. We also develop the necessary and sufficient conditions for the deterministic transf...
Aharonov-Bohm scattering in Chern-Simons theory of scalar particles
Boz, M; Fainberg, V; Pak, Namık Kemal (Elsevier BV, 1996-03-15)
The S-matrix operator for relativistic theory of charged scalar particles interacting via Chern-Simons field is constructed and is shown to be formally the same as the S-matrix in relativistic scalar quantum electrodynamics in which the Feynman diagrams with external photon lines are not considered and the propagators of the Chern-Simons particles are substituted in place of the ones for photons. All the one-loop Feynman diagrams for relativistic scattering amplitude of two charged particles are calculated....
Hermitian and gauge-covariant Hamiltonians for a particle in a magnetic field on cylindrical and spherical surfaces
Shikakhwa, M. S.; Chair, N. (IOP Publishing, 2017-01-01)
We construct the Hermitian Schrodinger Hamiltonian of spin-less particles and the gauge-covariant Pauli Hamiltonian of spin one-half particles in a magnetic field, which are confined to cylindrical and spherical surfaces. The approach does not require the use of involved differential-geometrical methods and is intuitive and physical, relying on the general requirements of Hermicity and gauge-covariance. The surfaces are embedded in the full three-dimensional space and confinement to the surfaces is achieved...
İnvestigating the semileptonic B to K1(1270,1400) decays in QCD sum rules
Dağ, Hüseyin; Zeyrek, Mehmet Tevfik; Department of Physics (2010)
Quantum Chromodynamics(QCD) is part of the Standard Model(SM) that describes the interaction of fundamental particles. In QCD, due to the fact that strong coupling constant is large at low energies, perturbative approaches do not work. For this reason, non-perturbative approaches have to be used for studying the properties of hadrons. Among several non-perturbative approaches, QCD sum rules is one of the reliable methods which is applied to understand the properties of hadrons and their interactions.\ In th...
Citation Formats
İ. Özkan, “Quantum Chemistry,” 00, 2016, Accessed: 00, 2020. [Online]. Available: https://ocw.metu.edu.tr/course/view.php?id=260.