A Remark on the Deformation of GNS Representations of *-Algebras
Abstract
Motivated by deformation quantization we investigate the algebraic GNS construction of *-representations of deformed *-algebras over ordered rings and compute their classical limit. The question if a GNS representation can be deformed leads to the deformation of positive linear functionals. Various physical examples from deformation quantization like the Bargmann-Fock and the Schr\"odinger representation as well as KMS functionals are discussed.
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