Quantum Drama: From the Bohr-Einstein Debate to the Riddle of Entanglement

The definitive account of the great Bohr-Einstein debate and its continuing legacyIn 1927, Niels Bohr and Albert Einstein began a debate about the interpretation and meaning of the new quantum theory. This would become one of the most famous debates in the history of science. At stake were an understanding of the purpose, and defense of the integrity, of science. What (if any) limits should we place on our expectations for what science can tell us about physical reality?Our protagonists slowly disappeared from the vanguard of physics, as its centre of gravity shifted from a war-ravaged Continental Europe to a bold, pragmatic, post-war America. What Einstein and Bohr had considered to be matters of the utmost importance were now set aside. Their debate was regarded either as settled in Bohr's favour or as superfluous to real physics.But the debate was not resolved. The problems of interpretation and meaning persisted, at least in the minds of a few stubborn physicists, such as David Bohm and John Bell, who refused to stop asking awkward questions. The Bohr-Einstein debate was rejoined, now with a new set of protagonists, on a small scale at first. Through their efforts, the debate was revealed to be about physics after all. Their questions did indeed have answers that could be found in a laboratory. As quantum entanglement became a real physical phenomenon, whole new disciplines were established, such as quantum computing, teleportation, and cryptography. The efforts of the experimentalists were rewarded with shares in the 2022 Nobel prize in physics.As Quantum Drama reveals, science owes a large debt to those who kept the discussions going against the apathy and indifference of most physicists before definitive experimental inquiries became possible. Although experiment moved the Bohr-Einstein debate to a new level and drew many into foundational research, it has by no means removed or resolved the fundamental question. There will be no Nobel prize for an answer. That will not shut off discussion. Our Drama will continue beyond our telling of it and is unlikely to reach its final scene before science ceases or the world ends.

Table of Contents:
Prologue Act I: Correspondence to Complementarity 1: Mutual Admiration 2: An Honourable Funeral 3: New Ways to Calculate 4: New Ways to Think Act II: Uncertainty to Orthodoxy 5: Incompatible Conceptions 6: Measurement and Impossibility 7: EPR, Faust, and the Cat 8: Missionaries of the Copenhagen Spirit Act III: Orthodoxy to Uncertainty 9: Postwar Hostilities 10: Skirmishes in Princeton 11: Juvenile Deviationism 12: Passing the Torch Act IV: Productive Inequalities 13: The Theorem of John S. Bell 14: Bell Tests and Protests 15: While the Photons are Dancing 16: Adventures in Quantum Information 17: Where to Cut? Which Way to Go? Epilogue Acknowledgements Figure and Photo Captions/Credits Endnotes Sources

About the Author :
Jim Baggott is an award-winning science writer. Trained as a scientist in the Universities of Oxford and Stanford, and a former lecturer at the University of Reading, he has written popular books on science, philosophy, and history. His books include Quantum Reality (2020), Quantum Space (2018), Mass (2017), for which he won the 2020 Premio Cosmos prize, Higgs (2012), and The Quantum Story (2011). His books have been translated into a dozen different languages, and he has won awards both for his scientific research and his science writing. John L. Heilbron is Professor of History and Vice Chancellor Emeritus at the University of California, Berkeley, as well as an Honorary Fellow of Worcester College, Oxford. After training in physics, he studied history of science under T. S. Kuhn in the 1960s, when Kuhn was writing The Structure of Scientific Revolutions. He is the recipient of several prizes and honorary degrees from multiple universities. His books include The Incomparable Monsignor (2022), Niels Bohr: A Very Short Introduction (2020), Galileo (2012), and Love, Literature, and the Quantum Atom (with Finn Aaserund, 2013), on Bohr's 1913 trilogy of scientific papers.

Review :
The collaboration of an outstanding historian of physics and a superb science writer gives us a masterful, detailed reconstruction of the slow unravelling of one of the greatest intellectual disputes in science, and brings us at the doorstep of today's debates. That the book is so good should come as no surprise because Baggott is possibly the best writer of books on physics for a broad audience and the late John Heilbron was one of our most distinguished historians of physics and someone who spent considerable time studying especially, but by no means only, the work of Bohr. I can think of no better grounding for any curious reader seeking the truth behind science's place in society. I have never read a better account: balanced, authoritative and spiced with elegant wit. This impressive volume makes a valuable contribution to our understanding of one of the most important aspects of twentieth century science. I shall certainly recommend it to my colleagues. [A] hugely detailed narrative of the 20th-century battle for the meaning of physics ... [Quantum Drama is] is humane and interesting, and also blessed with a fantastically dry sense of humour. ***** Enlightening. Compelling ... Quantum Drama offers a rich history that highlights the very human mix of ego, idealism, prejudice, and courage that accompanies the genius of science. A brilliant book for historians of science, or for physicists from undergraduate level to professors who want to find out more about how quantum theory got to where it is. Moving from the dawn of quantum theory to its most recent iterations, Quantum Drama is the story of how quantum theory reached its present state - with visions of where it may go in the future. [A] meticulous account of the tumultuous evolution of quantum physics ... [Baggot and Heilbron] balance depth and sophistication with sportscasterlike enthusiasm as they recount how the debate. Never before has the muddle, complexity and confusion surrounding a century of debate about the meaning of quantum mechanics and the famous 'Copenhagen spirit' been discussed with such clarity, thoroughness and scholarship. A tour-de-force. Jim Baggott and John Heilbron take us on a fascinating journey ... Baggott's passion for the epoch-changing ideas inherent in quantum mechanics and Heilbron's ardent devotion to the history of science shine on every page. In reflecting a century of fundamental debate, [Quantum Drama] reminds readers that science in its essence is a human condition. Baggott is my favorite science writer about physics and this one is a corker.