Abstract
The paper compares ontic structural realism in quantum physics with ontic structural realism about space–time. We contend that both quantum theory and general relativity theory support a common, contentful metaphysics of ontic structural realism. After recalling the main claim of ontic structural realism and its physical support, we point out that both in the domain of quantum theory and in the domain of general relativity theory, there are objects whose essential ways of being are certain relations so that these objects do not possess an intrinsic identity. Nonetheless, the qualitative, physical nature of these relations is in the quantum case (entanglement) fundamentally different from the classical, metrical relations treated in general relativity theory.
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References
Ainsworth, P. M. (2010). What is ontic structural realism? Studies in History and Philosophy of Modern Physics, 41, 50–57.
Bain, J. (2006). Spacetime structuralism. In D. Dieks (Ed.), Ontology of spacetime. Philosophy and foundations of physics series. Vol. 1, Amsterdam: Elsevier, pp. 37–65.
Bartels, A. (1996). Modern essentialism and the problem of individuation of spacetime points. Erkenntnis, 45, 25–43.
Bartels, A. (2010a). Dispositionen in Raumzeit-Theorien. In C. F. Gethmann (Ed.), Lebenswelt und Wissenschaft. XXI. Deutscher Kongress für Philosophie. Kolloquien. Hamburg: Meiner, pp. 352–362.
Bartels, A. (2010b). Dispositions, laws, and spacetime. Manuscript.
Bartels, A. (2011). Der ontologische Status der Raumzeit in der Allgemeinen Relativitätstheorie. In: M. Esfeld (Ed.), Philosophie der Physik. Berlin: Suhrkamp, pp. 32–49.
Bell, J. S. (1964). On the Einstein–Podolsky–Rosen-paradox. Physics, 1, 195–200.
Bergmann, P. G., & Komar, A. (1960). Poisson brackets between locally defined observables in general relativity. Physical Review Letters, 4, 432–433.
Bohm, D. (1951). Quantum theory. Englewood Cliffs: Prentice-Hall.
Butterfield, J. N. (2006). Against pointillisme about geometry. In F. Stadler & M. Stöltzner (Eds.), Time and history. Proceedings of the 28th Ludwig Wittgenstein symposium. Frankfurt (Main): Ontos, pp. 181–222.
Cao, Tian. Yu. (2003). Can we dissolve physical entities into mathematical structure? Synthese, 136, 57–71.
Clifton, R. K., & Halvorson, H. (2001). Entanglement and open systems in algebraic quantum field theory. Studies in History and Philosophy of Modern Physics, 32, 1–31.
Dorato, M. (2000). Substantivalism, relationism, and structural spacetime realism. Foundations of Physics, 30, 1605–1628.
Dorato, M. (2008). Is structural spacetime realism relationism in disguise? The supererogatory nature of the substantivalism/relationism debate. In D. Dieks (Ed.), The ontology of spacetime II (pp. 17–37). Amsterdam: Elsevier.
Ehlers, J. (1973). Survey of general relativity theory. In W. Israel (Ed.), Relativity, astrophysics and cosmology (pp. 1–125). Dordrecht: Reidel.
Einstein, A. (1948). Quanten–Mechanik und Wirklichkeit. Dialectica, 2, 320–324.
Esfeld, M. (2001). Holism in philosophy of mind and philosophy of physics. Dordrecht: Kluwer.
Esfeld, M. (2004). Quantum entanglement and a metaphysics of relations. Studies in History and Philosophy of Modern Physics, 35, 601–617.
Esfeld, M., & Lam, V. (2008). Moderate structural realism about space-time. Synthese, 160, 27–46.
Esfeld, M., & Lam, V. (2011). Ontic structural realism as a metaphysics of objects. In: A. Bokulich & P. Bokulich (Eds.), Scientific structuralism. Dordrecht: Springer, pp. 143–159.
Esfeld, M., & Sachse, C. (2010). Kausale Strukturen. Einheit und Vielfalt in der Natur und den Naturwissenschaften. Berlin: Suhrkamp. English version: Conservative reductionism New York: Routledge 2011.
French, S. (2010). The interdependence of structure, objects and dependence. Forthcoming in Synthese.
French, S., & Ladyman, J. (2003). Remodelling structural realism: Quantum physics and the metaphysics of structure. Synthese, 136, 31–56.
French, S., & Ladyman, J. (2011). In defence of ontic structural realism. In: A. Bokulich & P. Bokulich (Eds.), Scientific structuralism. Dordrecht: Springer, pp. 25–42.
French, S., & Redhead, Michael. L. G. (1988). Quantum physics and the identity of indiscernibles. British Journal for the Philosophy of Science, 39, 233–246.
Ghirardi, G. C., Rimini, A., & Weber, T. (1986). Unified dynamics for microscopic and macroscopic systems. Physical Review D, 34, 470–491.
Haag, R. (1992). Local quantum physics. Berlin: Springer.
Healey, R. A. (1991). Holism and nonseparability. Journal of Philosophy, 88, 393–421.
Heil, J. (2003). From an ontological point of view. Oxford: Oxford University Press.
Hoefer, C. (2000). Energy conservation in GTR. Studies in History and Philosophy of Modern Physics, 31, 187–199.
Howard, D. (1985). Einstein on locality and separability. Studies in History and Philosophy of Science, 16, 171–201.
Jarrett, J. P. (1984). On the physical significance of the locality conditions in the Bell arguments. Noûs, 18, 569–589.
Ladyman, J. (1998). What is structural realism? Studies in History and Philosophy of Modern Science, 29, 409–424.
Ladyman, J. (2007). On the identity and diversity of objects in a structure. Proceedings of the aristotelian society. Supplementary Volume 81, 1–22.
Ladyman, J., & Bigaj, T. F. (2010). The principle of the identity of indiscernibles and quantum mechanics. Philosophy of Science, 77, 117–136.
Ladyman, J., Ross, D., Spurrett, D., & Collier, J. (2007). Every thing must go. Metaphysics naturalised. Oxford: Oxford University Press.
Lam, V. (2011a). The entanglement structure of quantum field systems. Manuscript.
Lam, V. (2011b). Gravitational and non-gravitational energy: The need for background structures. Philosophy of Science, 78, 1012–1024.
Malament, D. B. (2006). Classical relativity theory. In J. N. Butterfield & J. Earman (Eds.), Handbook of the philosophy of science. Philosophy of physics. Part A. Amsterdam: Elsevier, pp. 229–275.
Maudlin, T. (1988). The essence of space–time. In A. Fine & J. Leplin (Eds.), Proceedings of the 1988 biennial meeting of the philosophy of science association, vol. 2. East Lansing: Philosophy of Science Association, pp. 82–91.
Muller, F. A. (2011). How to defeat Wüthrich’s abysmal embarrassment argument against space-time structuralism. Philosophy of Science, 78, 1046–1057.
Muller, F. A., & Saunders, S. (2008). Discerning fermions. British Journal for the Philosophy of Science, 59, 499–548.
Muller, F. A., & Seevinck, M. (2009). Discerning elementary particles. Philosophy of Science, 76, 179–200.
Norton, J. (1988). The hole argument. In A. Fine & J. Leplin (Eds.), Proceedings of the 1988 biennial meeting of the philosophy of science association. Vol. 2. East Lansing: Philosophy of Science Association, pp. 56–64.
Rickles, D., & French, S. (2006). Quantum gravity meets structuralism: Interweaving relations in the foundations of physics. In S. French, D. Rickles, & J. Saatsi (Eds.), Structural foundations of quantum gravity (pp. 1–39). Oxford: Oxford University Press.
Rovelli, C. (2007). Quantum gravity. In J. N. Butterfield & J. Earman (Eds.), Handbook of the philosophy of science. Philosophy of physics. Part B. Amsterdam: Elsevier, pp. 1287–1329.
Ruetsche, L. (2004). Intrinsically mixed states: An appreciation. Studies in History and Philosophy of Modern Physics, 35, 221–239.
Rynasiewicz, R. (1996). Absolute versus relational space-time: An outmoded debate? Journal of Philosophy, 93, 279–306.
Schrödinger, E. (1935a). Die gegenwärtige Situation in der Quantenmechanik. Naturwissenschaften 23, pp. 807–812, 823–828, 844–849.
Schrödinger, E. (1935b). Discussion of probability relations between separated systems. Proceedings of the Cambridge Philosophical Society, 31, 555–563.
Shimony, A. (1993). Search for a naturalistic world view. vol. 2: Natural science and metaphysics. Cambridge: Cambridge University Press.
Strawson, G. (2008). The identity of the categorical and the dispositional. Analysis, 68, 271–282.
Teller, P. (1986). Relational holism and quantum mechanics. British Journal for the Philosophy of Science, 37, 71–81.
Wallace, D. (2006). In defence of naiveté: The conceptual status of Lagrangian quantum field theory. Synthese, 151, 33–80.
Worrall, J. (1989). Structural realism: The best of two worlds? Dialectica, 43, 99–124.
Wüthrich, C. (2009). Challenging the spacetime structuralist. Philosophy of Science, 76, 1039–1051.
Acknowledgments
We would like to thank an anonymous referee for comments on the first version of this paper. VL is grateful to the Australian Research Council (ARC) for financial support (Discovery Early Career Researcher Award (DECRA), project DE120102308).
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Lam, V., Esfeld, M. The Structural Metaphysics of Quantum Theory and General Relativity. J Gen Philos Sci 43, 243–258 (2012). https://doi.org/10.1007/s10838-012-9197-x
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DOI: https://doi.org/10.1007/s10838-012-9197-x