Fortran Programs for the Calculation of Wigner 3j, 6j, and 9j Coefficients for Angular Momenta <= 80 (Classic Reprint) - Couverture souple

Caswell, Randall Smith

9781527917491: Fortran Programs for the Calculation of Wigner 3j, 6j, and 9j Coefficients for Angular Momenta <= 80 (Classic Reprint)

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ISBN 10 : 1527917495 ISBN 13 : 9781527917491

Editeur : Forgotten Books, 2018

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Compute Wigner 3j, 6j, and 9j coefficients with Fortran programs designed for angular momenta up to 80.

This reference presents Fortran II and Fortran IV programs that calculate these coefficients. It explains how large factorials are handled by using logarithms and how the alternating series are summed in double precision. The material covers two program versions: Version I emphasizes speed and lower memory use, while Version II offers higher accuracy with deeper internal precision.

- Learn how the methods produce 3j, 6j, and 9j values across a wide range of inputs
- Understand the tradeoffs between speed, memory use, and numerical accuracy
- See sample input structures, program listings, and testing approaches
- Discover how single- and double-precision implementations compare in practice

Ideal for readers who work with quantum angular momentum calculations and want practical, reusable Fortran tools.

Les informations fournies dans la section � Synopsis � peuvent faire r�f�rence � une autre �dition de ce titre.

�diteur: Forgotten Books
Date d'�dition: 2018
Langue: anglais
ISBN 10: 1527917495
ISBN 13: 9781527917491
Reliure: Broch�
Nombre de pages: 71
Coordonn�es du fabricant: non disponible
Personne responsable: non disponible

Autres �ditions populaires du m�me titre

9780265892831: Fortran Programs for the Calculation of Wigner 3j, 6j, and 9j Coefficients for Angular Momenta <= 80 (Classic Reprint)

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ISBN 10 : 026589283X ISBN 13 : 9780265892831
Editeur : Forgotten Books, 2018
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Fortran Programs for the Calculation of Wigner 3j, 6j (Classic Reprint)

Randall Smith Caswell, L. C. Maximon

Edit� par Forgotten Books, 2018

ISBN 10 : 1527917495 ISBN 13 : 9781527917491

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Vendeur : Forgotten Books, London, Royaume-Uni

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Paperback. Etat : New. Print on Demand. This book explores the mathematical problem of calculating the '6j' and '9j' coefficients in angular momentum coupling. In quantum mechanics, these coefficients are essential for understanding the behaviour of coupled angular momentum systems, found in atomic and nuclear physics, and in molecular spectroscopy. The methods for calculating these coefficients are explored in detail, along with their orthonormality relations for testing the accuracy of the calculations. The book also provides the Fortran programs and calling sequences for calculating these coefficients, making it a practical guide for scientists working on problems involving angular momentum coupling. The depth and clarity of the explanations will also benefit scholars and students with an interest in theoretical quantum mechanics. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N� de r�f. du vendeur 9781527917491_0

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