Abstract
Based on our previous work on the recursive fermion system in the Cuntz algebra, it is shown that a nonlinear transformation group of the CAR fermion algebra is induced from a U(2p) action on the Cuntz algebra \(\mathcal{O}\) 2 p with an arbitrary positive integer p. In general, these nonlinear transformations are expressed in terms of finite polynomials in generators. Some Bogoliubov transformations are involved as special cases.
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Abe, M. and Kawamura, K.: Recursive fermion system in Cuntz algebra. I, Embeddings of fermion algebra into Cuntz algebra, to appear in Comm. Math. Phys. (2002), Preprint RIMS-1332, math-ph/0110003.
Abe, M. and Kawamura, K.: Recursive fermion system in Cuntz algebra. II, Endomorphism, automorphism and branching of representation, in preparation.
Cuntz, J.: Simple C*-algebras generated by isometries, Comm. Math. Phys. 57 (1977), 173–185.
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Abe, M., Kawamura, K. Nonlinear Transformation Group of CAR Fermion Algebra. Letters in Mathematical Physics 60, 101–107 (2002). https://doi.org/10.1023/A:1016114322568
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DOI: https://doi.org/10.1023/A:1016114322568