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Obstructions to Quantization

  • M. J. Gotay

Summary

Quantization is not a straightforward proposition, as demonstrated by Groenewold’s and Van Hove’s discovery, more than fifty years ago, of an “obstruction” to quantization. Their “no-go theorems” assert that it is in principle impossible to consistently quantize every classical polynomial observable on the phase space R 2n in a physically meaningful way. Similar obstructions have been recently found for S 2 and T*S 1, buttressing the common belief that no-go theorems should hold in some generality. Surprisingly, this is not so—it has just been proven that there are no obstructions to quantizing either T 2 or T*R +.

In this paper we work towards delineating the circumstances under which such obstructions will appear, and understanding the mechanisms which produce them. Our objectives are to conjecture—and in some cases prove—generalized Groenewold-Van Hove theorems, and to determine the maximal Lie subalgebras of observables which can be consistently quantized. This requires a study of the structure of Poisson algebras of symplectic manifolds and their representations. To these ends we include an exposition of both prequantization (in an extended sense) and quantization theory, here formulated in terms of “basic algebras of observables” We then review in detail the known results for R 2n , S 2, T*S 1, T 2, and T*R +, as well as recent theoretical work. Our discussion is independent of any particular method of quantization; we concentrate on the structural aspects of quantization theory which are common to all Hilbert space-based quantization techniques.

Keywords

Poisson Bracket Symplectic Manifold Basic Algebra Poisson Algebra Coadjoint Orbit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • M. J. Gotay
    • 1
  1. 1.Department of MathematicsUniversity of HawaiiHonoluluUSA

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