1.

Record Nr.

UNINA9910373934903321

Autore

Bohm Arno

Titolo

Quantum Physics : States, Observables and Their Time Evolution / / by Arno Bohm, Piotr Kielanowski, G. Bruce Mainland

Pubbl/distr/stampa

Dordrecht : , : Springer Netherlands : , : Imprint : Springer, , 2019

ISBN

94-024-1760-5

Edizione

[1st ed. 2019.]

Descrizione fisica

1 online resource (IX, 353 p. 48 illus.)

Disciplina

530.12

Soggetti

Quantum theory

Physics

Atoms

Quantum Physics

Mathematical Methods in Physics

Atomic, Molecular, Optical and Plasma Physics

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Includes index.

Nota di contenuto

Quantum Harmonic Oscillator -- Angular Momentum -- Combinations of Quantum Physical Systems -- Stationary Perturbation Theory -- Time Evolution of Quantum Systems -- Epilogue -- Appendix: Mathematical Preliminaries -- Index.

Sommario/riassunto

This is an introductory graduate course on quantum mechanics, which is presented in its general form by stressing the operator approach. Representations of the algebra of the harmonic oscillator and of the algebra of angular momentum are determined in chapters 1 and 2 respectively. The algebra of angular momentum is enlarged by adding the position operator so that the algebra can be used to describe rigid and non-rigid rotating molecules. The combination of quantum physical systems using direct-product spaces is discussed in chapter 3. The theory is used to describe a vibrating rotator, and the theoretical predictions are then compared with data for a vibrating and rotating diatomic molecule. The formalism of first- and second-order non-degenerate perturbation theory and first-order degenerate perturbation theory are derived in chapter 4. Time development is described in chapter 5 using either the Schroedinger equation of motion or the



Heisenberg’s one. An elementary mathematical tutorial forms a useful appendix for the readers who don’t have prior knowledge of the general mathematical structure of quantum mechanics.