Chancellor's Professor in Logic and Philosophy of Science at the University of California, Irvine, where he specializes in philosophy of physics.
Education and career
He earned his Ph.D. in philosophy at Columbia University.
In 2022, he was elected a Fellow of the American Academy of Arts & Sciences.
Barrett is known for his work on the measurement problem of quantum mechanics (why and how quantum systems collapse when one measures them), and particularly on the many-worlds interpretation of Hugh Everett.
His book The Quantum Mechanics of Minds and Worlds (Oxford University Press, 2000) concerns this problem and its solutions, and his book with Peter Byrne, The Everett Interpretation of Quantum Mechanics: Collected Works 1955-1980 with Commentary (Princeton University Press, 2012) collects the works of Everett himself on this problem.
Reviews of The Quantum Mechanics of Minds and Worlds:
Arageorgis, Aristidis (June 2001), The Review of Metaphysics, 54 (4): 904–905, JSTOR 20131625
Becker, Lon (July 2001), The Philosophical Review, 110 (3): 482–484, doi:10.2307/2693670, JSTOR 2693670
Saunders, S. (October 2001), Mind, 110 (440): 1039–1043, doi:10.1093/mind/110.440.1039
Myrvold, Wayne (September 2002), Philosophy of Science, 69 (3): 536–538, doi:10.1086/342458, S2CID 125572230
Reviews of Everett Interpretation of Quantum Mechanics. Collected Works:
Bacciagaluppi, Guido (September 2013), HOPOS: The Journal of the International Society for the History of Philosophy of Science, 3 (2): 348–352, doi:10.1086/671743
Sauer, Tilman (November 2013), The British Journal for the History of Science, 46 (4): 731–732, doi:10.1017/s0007087413000812, S2CID 147400840
Lehner, Christoph (March 2015), Isis, 106 (1): 220–221, doi:10.1086/681886
Richmond, Sheldon (2015), "Review", Philosophy in Review, 35 (3)