This book is an introduction to the arrow of time in thermodynamics and cosmology, and develops a new quantum measurement theory in which the foregoing concepts play an essential role. The first chapter is an overview and 'route map' and is followed by an exposition of irreversibility, the expansion of the Universe and other arrows of time. The author examines the thesis that the thermodynamic arrow follows the cosmological one, and in doing so extends traditional statistical mechanics. The second part of the book presents a new theory of quantum measurement and possible experimental tests. This theory incorporates the extended statistical mechanics in an essential way. The last chapter discusses open experimental and theoretical issues. Written in a lively and accessible style, the text is liberally sprinkled with exercises. Each chapter ends with a resources section that includes notes, further reading, and technical appendices.

‘Time’s Arrow and Quantum Measurement are two of the deepest puzzles of modern physics. In this fascinating book, Lawrence S. Schulman argues that a better understanding of the former problem points to a novel solution of the latter … his book is essential reading for anyone with a serious interest in either topic.’

Huw Price Source: Nature

‘The author has obviously enjoyed writing this thought-provoking work, and I enjoyed reading it. I can certainly recommend it to anyone interested in the problem as a worthwhile contribution. Furthermore the author has written for a wide readership, and I can strongly recommend this book to the general physicist as an excellent way of becoming interested in the problem.’

David Pegg Source: Physics World

‘This thought-provoking text can be enjoyed by students of the philosophy of physics, and will stimulate young researchers in theoretical physics.’

Source: Irish Astronomical Journal

‘The origins of time-asymmetry and the problem of quantum measurement are two of the deepest philosophical puzzles in modern physics. In this highly original book, L. S. Schulman argues that a better understanding of the former suggests a novel solution to the latter.’

Source: The British Journal for the Philosophy of Science

‘ … this very readable book, written in a witty and accessible style, provides fresh insights on statistical mechanics and quantum theory.’

Christian Bracher Source: Contemporary Physics

‘To summarize, this very readable book, written in a witty and accessible style, provides fresh insights on statistical mechanics and quantum theory.’

Christian Bracher Source: Department of Physics