Hans D. Dahmen – författare

The aim of this book is to explain and exemplify the basic concepts and phenomena of quantum mechanics by means of visualization. Unlike classical mechanics, for which students have already developed an intuition based on everyday experience, the phenomena of quantum mechanics often defy intuition.Through the extensive use of computer- generated illustrations, this text helps students to establish the relation between quantum mechanics and classical physics, and, more importantly helps readers develop an intuition for notoriously abstract phenomena such as:- the tunnel effect- excitation and decay of metastable states- wave packet motion within a well- motion of systems of distinguishable and of indistinguishable particles- free wave packet in 3 dimensions- angular momentum decomposition- scattering in 3 dimensions- stationary bound states in various 3 dimensional potentials- Kepler motion of wave packets in the Coulomb field- Spin and magnetic resonance.Illustrations from experiments in a variety of fields, including chemistry, and molecular, atomic, nuclear, and particle physics, underline the basic as well as the practical importance of quantum mechanics. The present edition has been thoroughly revised and expanded. It includes a new chapter on quantile motion, additional phenomena and examples.

In studying classical mechanics, students are often helped by the fact that intuitions developed in everday life can give one a good idea of the behavior of the idealized objects dealt with in introductory courses. In addition, equations encountered are sufficiently simple to solve even in relatively complex situations that students can further develop their intution by solving problems. In learning quantum theory, however, intutions developed for the classical world fail, and the equations to be solved are sufficiently complex that they can readily be solved without a computer only for the simplest situations. This book represents an attempt to jump the hurdle to an intuitive understanding of wave mechanics by using illustrations profusely to present the time evolution and parameter dependence of wave functions in a wide variety of situations. Most of the illustrations are computer-generated solutions of the Schr dinger equation for one- and three-dimensional systems. The situations discussed range from the simple particle in a box through resonant scattering in one dimension to the hydrogen atom and Regge classification of resonant scattering. This edition has been thoroughly revised and expanded to include a discussion of spin and magnetic resonance.

Based on the interactive program Interquanta, Quantum Mechanics on the Macintosh, uses extensive 3-D graph- ics to guide the student through computer experiments in the quantum mechanics of free particle motion, bound states and scattering, tunneling, two-particle interactions, and more. It also includes a section on special functions of mathematical physics. With more than 200 problems, the text and programs provide students with practical experiences in using such hard-to-visualize concepts as complex amplitudes, eigenvalues, and scattering cross sections. The diskettes included with the book provide two versions of the programs, one for use in computers with a mathematical coprocessor, the other optimized for machines without a coprocessor.

Quantenmechanik auf dem Personalcomputer beschreibt das in seiner Art einzigartige interaktive Programm IQ, mit dessen Hilfe man sich die Grundlagen der Quantenmechanik anhand von Graphiken veranschaulichen kann. Die beigefügte 3 1/2'''' MS-DOS Diskette enthält drei Programme, die je nach Bedarf ohne Koprozessor, mit Koprozessor oder sogar mit einem 32 bit Prozessor lauffähig sind. In einem ausführlichen Begleittext werden u.a. die Bewegung eines freien Teilchens, gebundene Zustände und Streuung in einer und drei Dimensionen sowie spezielle Funktionen der mathematischen Physik behandelt. Durch freie Wahl der Eingabeparamenter können unterschiedliche Problemstellungen anschaulich gelöst werden. 284 auf das Programm abgestimmte Übungen machen Buch und Programm zu einem unentbehrlichen Studienbegleiter.

This book is essentially an extensive user's guide for INTERQUANTA, the Interactive Program of Quantum Mechanics which we will abbreviate hence­ forth as IQ. The book also contains a short summary of the different subjects of quantum mechanics treated by IQ as well as a large number of exercises. The program can be used in two ways. By working through (at least a part of) these exercises, the user of IQ explores a computer laboratory in quantum mechanics gaining experience in this abstract field by performing computer experiments. No knowledge of computer programming is required. The user only has to learn how to use some of the simple IQ commands and, in par­ ticular, the extensive HELP facilities. A simpler way to use IQ is to study one or several of the ready-made demonstrations. In each demonstration the user is taken through one chapter of quantum mechanics. Short explanatory texts displayed on the screen interchange with graphics illustrating quantum­ mechanical problems which are solved by the program.

Now in its 2nd edition, Quantum Mechanics on the PC presents the most up-to-date approach to elementary quantum mechanics. It is based on the interactive program Interquanta, which runs on MS-DOS either with or without coprocessor (two separate versions included on a 3 1/2'''' diskette). With its extensive 3D colour graphics features, the book guides readers through computer experiments on - free particles - bound states and scattering from various potentials - two-particle problems - properties of special functions of mathematical physics. The course, with a wide variety of more than 200 detailed, class-tested problems, provides students - even with little experience in quantum mechanics - with unique practical experience of complex probability amplitudes, eigenvalues, scattering cross sections, and the like. Lecturers and teachers will find here excellent, hands-on classroom demonstrations for their quantum-mechanics course. See LooK 2/92