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American Mathematical Society eBooks

The Conceptual Foundations of Quantum Mechanics

Leonard Eisenbud

Published Apr 17, 2007• 75 citations
Publisher

Abstract

This book provides a clear and logical path to understanding what quantum mechanics is about. It will be accessible to undergraduates with minimal mathematical preparation: all that is required is an open mind, a little algebra, and a first course in undergraduate physics. Quantum mechanics is arguably the most successful physical theory. It makes predictions of incredible accuracy. It provides the structure underlying all of our electronic technology, and much of our mastery over materials. But compared with Newtonian mechanics, or even relativity, its teachings seem obscure-they have no coun

DOI
10.1090/chel/360

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This book provides a clear and logical path to understanding what quantum mechanics is about. It will be accessible to undergraduates with minimal mathematical preparation: all that is required is an open mind, a little algebra, and a first course in undergraduate physics. Quantum mechanics is arguably the most successful physical theory. It makes predictions of incredible accuracy. It provides the structure underlying all of our electronic technology, and much of our mastery over materials. But compared with Newtonian mechanics, or even relativity, its teachings seem obscure-they have no coun
Based on years of teaching experience, this book provides a clearly structured and accessible introduction to the fundamental principles of quantum mechanics, tailored for undergraduate students. The text builds a strong conceptual and mathematical foundation while promoting intuitive understanding and critical thinking. Students progress from basic concepts such as wave mechanics to more advanced topics within matrix mechanics. Complex concepts are presented in a diligent and understandable way, achieving a balance between conceptual insight and mathematical rigor without oversimplifying the subject. Thoroughly class-tested, this book is designed to support both classroom instruction and independent study. It will serve as a great tool for undergraduates studying introductory and intermediate quantum mechanics, as well as modern physics and quantum systems for engineers.
Offering a detailed account of the key concepts and mathematical apparatus of quantum mechanics, this textbook is an ideal companion to both undergraduate and graduate courses. The formal and practical aspects of the subject are explained clearly alongside examples of modern applications, providing students with the tools required to thoroughly understand the theory and apply it. The authors provide an intuitive conceptual framework that is grounded in a coherent physical explanation of quantum phenomena, established over decades of teaching and research in quantum mechanics and its foundations. The book's educational value is enhanced by the inclusion of examples and exercises, with solutions available online, and an extensive bibliography is provided. Notes throughout the text provide fascinating context on the tumultuous history of quantum mechanics, the people that developed it, and the questions that still remain at its center. This title is also available as Open Access on Cambridge Core.
The universe we live in is both strange and interesting. This strangeness comes about because, at the most fundamental level, the universe is governed by the laws of quantum mechanics. This is the most spectacularly accurate and powerful theory ever devised, one that has given us insights into many aspects of the world, from the structure of matter to the meaning of information. This textbook provides a comprehensive account of all things quantum. It starts by introducing the wavefunction and its interpretation as an ephemeral wave of complex probability, before delving into the mathematical formalism of quantum mechanics and exploring its diverse applications, from atomic physics and scattering, to quantum computing. Designed to be accessible, this volume is suitable for both students and researchers, beginning with the basics before progressing to more advanced topics.
Recent years have seen increased interest towards quantum physics education research, and the topic has been studied from many perspectives both empirically and theoretically. The consensus of previous studies has been that the theory poses an exceptional challenge for learning and teaching, warranting more attention and further research. This dissertation aims to contribute to this discussion by asking what the underlying reasons for these challenges are and how they could potentially be alleviated. On one hand, the topic is approached from an interpretational point of view, considering the ontological foundations of the theory. It is argued that many of the fundamental difficulties in learning and teaching quantum mechanics stem from the ontological foundations of the theory. On the other hand, the historical development and the mathematical structure of the theory are discussed from an educational point of view. The dissertation consists of five articles that explore the above themes from different perspectives. The first study considers the development of one historical formulation of quantum mechanics, namely matrix mechanics. In general, the historical development of quantum theory has been complex and meandering, and its results may seem confusing to students. In our study, we discuss the use of matrix mechanics in quantum mechanics instruction to provide students with a clearer picture of the theory, its historical development, and the relations between its various formulations and used formalisms. The second and third studies add to the discussion on the roles of mathematics in physics and physics education. In quantum mechanics, the role of mathematics is especially pronounced, as the understanding of the theory heavily relies on its mathematical framework. Therefore, we argue that the focus of quantum mechanics instruction should be shifted away from calculational aspects to a more integrated approach that treats the conceptual and mathematical sides of the theory intertwined. In our studies, we provide an overview of the roles assigned to mathematics in previous physics education research literature and present our own layered characterisation of the roles, aiming at diversifying the discussion on the roles of mathematics within the physics education research community and in physics instruction. The fourth and fifth studies empirically examine the challenges of quantum mechanics instruction in the context of an introductory quantum mechanics course. In the fourth study, we explore the effect of initial mathematics knowledge and self-efficacy on student learning, while in the fifth study, we consider the effects of the instructional approach and different teaching strategies on student conceptual knowledge and self-efficacy. The specific focus is on the impact of implementing a new instructional approach, the so-called spin first approach, that emphasises the mathematical basis and conceptual understanding of the theory instead of repeated mathematical calculations. Our results show that the spin-first approach, combined with an active learning model, is able to foster a high level of student self-efficacy and conceptual learning. Quantum mechanics is one of the most successful theories in the history of physics. Nevertheless, learning and teaching its basic principles continue to pose significant challenges for both instructors and students. In this dissertation, we argue for an approach to teaching the theory that places greater emphasis on its mathematical foundations and treats physics and mathematics as intertwined disciplines.