This manuscript is based on a series of lectures given in the XX Jacques-Louis Lions Spanish-French School on Numerical Simulations in Physics & Engineering. While quantum mechanics is widely presented within the Hilbert space formalism in undergraduate courses, in these notes we give an introduction to its algebraic formulation. It is based on the theory of \(C^{*}\) -algebras, which is shortly outlined here. This viewpoint is more general than the usual formulation of quantum mechanics, because of the the non-uniqueness of irreducible representations of \(C^{*}\) -algebras of infinite dimension. This is related to the Rosenberg theorem and Naimark’s problem.

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\(C^{*}\) -Algebraic Formulation of Quantum Mechanics

  • J.-B. Bru,
  • W. de Siqueira Pedra

摘要

This manuscript is based on a series of lectures given in the XX Jacques-Louis Lions Spanish-French School on Numerical Simulations in Physics & Engineering. While quantum mechanics is widely presented within the Hilbert space formalism in undergraduate courses, in these notes we give an introduction to its algebraic formulation. It is based on the theory of \(C^{*}\) -algebras, which is shortly outlined here. This viewpoint is more general than the usual formulation of quantum mechanics, because of the the non-uniqueness of irreducible representations of \(C^{*}\) -algebras of infinite dimension. This is related to the Rosenberg theorem and Naimark’s problem.