Abstract
We discuss an article by Weinberg (N Y Rev Books, 2017) expressing his discontent with the usual ways to understand quantum mechanics. We examine the two solutions that he considers and criticizes and propose another one, which he does not discuss, the pilot wave theory or Bohmian mechanics, for which his criticisms do not apply.
Similar content being viewed by others
Notes
See however Sect. 6 for a serious qualification of that idea.
There are also pedagogical videos made by students in Munich, available at: https://cast.itunes.uni-muenchen.de/vod/playlists/URqb5J7RBr.html.
We use lower case letters for the generic arguments of the wave function and upper case ones for the actual positions of the particles.
Equation (9) is useful primarily when it is applied to subsystems of a larger system, for example the universe, that has its own wave function. In that case, one can associate to the subsystem an effective wave function \(\Psi \) and the empirical distribution \(\rho \) of particle configurations in appropriate ensembles of subsystems, each having effective wave function \(\Psi ,\) is given by (9).
This section is based on Chapter 7 of David Albert’s book “Quantum Mechanics and Experience” [1].
In fact, one can introduce a notion of wave function for a subsystem of a closed system (i.e., in principle of the Universe) that coincides with the wave function used in quantum mechanics and that does collapse when collapses occur according to the standard approach, see [25] for a detailed discussion. The wave function that never collapses is the one of the closed system.
There exists also a no hidden variables theorem, due to Clifton [14], preventing us from assigning both a position and a velocity to two particles on a line, in such a way that the statistical distributions of these quantities and of certain functions of them coincide with the usual quantum predictions. See [12, p. 43] for a discussion of that theorem.
References
Albert, D.: Quantum Mechanics and Experience. Harvard University Press, Cambridge (1992)
Allori, V., Goldstein, S., Tumulka, R., Zanghì, N.: On the common structure of Bohmian mechanics and the Ghirardi–Rimini–Weber theory. Br. J. Philos. Sci. 59, 353–389 (2008)
Allori, V., Goldstein, S., Tumulka, R., Zanghì, N.: Many-worlds and Schrödinger’s first quantum theory. Br. J. Philos. Sci. 62, 1–27 (2011)
Bassi, A., Ghirardi, G.C.: Dynamical reduction models. Phys. Rep. 379, 257–427 (2003)
Bell, J.S.: On the problem of hidden variables in quantum mechanics. Rev. Mod. Phys. 38, 447–452 (1966) (reprinted as Chap. 1 in [7])
Bell, J.S.: Against measurement. Phys. World 3, 33–40 (1990) (reprinted as Chap. 23 in [7])
Bell, J.S.: Speakable and Unspeakable in Quantum Mechanics. Collected Papers on Quantum Philosophy, 2nd edn, with an introduction by Alain Aspect, Cambridge University Press, Cambridge (2004); 1st edn (1993)
Blanchard, P., Fröhlich, J., Schubnel, B.: A “Garden of Forking Paths”–the quantum mechanics of histories of events. Nucl. Phys. B 912, 463–484 (2016)
Bohm, D.: A suggested interpretation of the quantum theory in terms of “hidden variables,” Parts 1 and 2. Phys. Rev. 89, 166–193 (1952)
Bohm, D., Hiley, B.J.: The Undivided Universe. Routledge, London (1993)
Bohr, N.: Discussion with Einstein on epistemological problems in atomic physics. In: Schilpp, P.A. (ed.) Albert Einstein. Philosopher-Scientist, pp. 201–241. The Library of Living Philosophers, Evanston (1949)
Bricmont, J.: Making Sense of Quantum Mechanics. Springer, Cham (2016)
Bricmont, J.: Quantum Sense and Nonsense. Springer, Cham (2017)
Clifton, R.: Complementarity between position and momentum as a consequence of Kochen–Specker arguments. Phys. Lett. A 271, 1–7 (2000)
DeWitt, B.B., Graham, R.N. (eds.): The Many-Worlds Interpretation of Quantum Mechanics. University Press, Princeton (1973)
Dürr, D., Goldstein, S., Zanghì, N.: Quantum equilibrium and the origin of absolute uncertainty. J. Stat. Phys. 67, 843–907 (1992)
Dürr, D., Teufel, S.: Bohmian Mechanics. The Physics and Mathematics of Quantum Theory. Springer, Berlin (2009)
Dürr, D., Goldstein, S., Zanghì, N.: Quantum Physics Without Quantum Philosophy. Springer, Berlin (2012)
Everett, H.: ‘Relative state’ formulation of quantum mechanics. Rev. Mod. Phys. 29, 454–462 (1957) (reprinted in [15, pp. 141–149])
Fröhlich, J.: The quest for laws and structure. In: König, W. (ed.) Mathematics in Society, pp. 101–130. EMS Publishing House (2016).
Gell-Mann, M., Hartle, J.B.: Quantum mechanics in the light of quantum cosmology. In: Zurek, W. (ed.) Complexity, Entropy, and the Physics of Information, p. 425. Addison-Wesley, Reading (1990)
Gell-Mann, M., Hartle, J.B.: Alternative decohering histories in quantum mechanics. In: Phua, K.K., Yamaguchi, Y. (eds.) Proceedings of the 25th International Conference on High Energy Physics, Singapore, 1990. World Scientific, Singapore (1991)
Gell-Mann, M., Hartle, J.B.: Classical equations for quantum systems. Phys. Rev. D 47, 3345–3382 (1993)
Ghirardi, G.C., Rimini, A., Weber, T.: Unified dynamics for microscopic and macroscopic systems. Phys. Rev. D 34, 470–491 (1986)
Goldstein, S.: Bohmian mechanics and quantum information. Found. Phys. 40, 335–355 (2010)
Goldstein, S.: Bohmian mechanics. In: Zalta, E.N. (ed.), The Stanford Encyclopedia of Philosophy, Spring 2013 Edition. https://plato.stanford.edu/archives/spr2013/entries/qm-bohm/
Griffiths, R.B.: Consistent Quantum Theory. Cambridge University Press, Cambridge (2002)
Friedberg, R., Hohenberg, P.C.: Compatible quantum theory. Rep. Prog. Phys. 77, 092001–092035 (2014)
Friedberg, R., Hohenberg, P.C.: What is quantum mechanics? A minimal formulation. Found. Phys. 48, 295–332 (2018)
Kochen, S., Specker, E.P.: The problem of hidden variables in quantum mechanics. J. Math. Mech. 17, 59–87 (1967)
Kocsis, S., Braverman, B., Ravets, S., Stevens, M.J., Mirin, R.P., Shalm, L.K., Steinberg, A.M.: Observing the average trajectories of single photons in a two-slit interferometer. Science 332, 1170–1173 (2011)
Mermin, D.: Hidden variables and the two theorems of John Bell. Rev. Mod. Phys. 65, 803–815 (1993)
Norsen, T.: Foundations of Quantum Mechanics: An Exploration of the Physical Meaning of Quantum Theory. Springer, Cham (2017)
Omnès, R.: Logical reformulation of quantum mechanics. I. Foundations. J. Stat. Phys. 53, 893–932 (1988)
Omnès, R.: Logical reformulation of quantum mechanics. II. Interference and the Einstein–Podolsky–Rosen experiment. J. Stat. Phys. 53, 933–955 (1988)
Omnès, R.: Logical reformulation of quantum mechanics. III. Classical limit and irreversibility. J. Stat. Phys. 53, 957–975 (1988)
Omnès, R.: Logical reformulation of quantum mechanics. IV. Projectors in semiclassical physics. J. Stat. Phys. 57, 357–382 (1989)
Peres, A.: Incompatible results of quantum measurements. Phys. Lett. A 151, 107–108 (1990)
Peres, A.: Two simple proofs of the Kochen–Specker theorem. J. Phys. A 24, L175–L178 (1991)
Philippidis, C., Dewdney, C., Hiley, B.J.: Quantum interference and the quantum potential. Il Nuovo Cim. B 52, 15–28 (1979)
’t Hooft, G.: The Cellular Automaton Interpretation of Quantum Mechanics. Springer, Cham (2016)
Tumulka, R.: Understanding Bohmian mechanics—a dialogue. Am. J. Phys. 72, 1220–1226 (2004)
Weinberg, S.: The trouble with quantum mechanics. N. Y. Rev. Books (19 January 2017)
Acknowledgements
We thank Tim Maudlin for very interesting discussions on the subject of this paper.
Author information
Authors and Affiliations
Corresponding author
Additional information
Dedicated to the memory of Pierre Hohenberg.
Rights and permissions
About this article
Cite this article
Bricmont, J., Goldstein, S. Diagnosing the Trouble with Quantum Mechanics. J Stat Phys 175, 690–703 (2019). https://doi.org/10.1007/s10955-018-2113-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10955-018-2113-y