Abstract
The representation of the canonical commutation relations involved in the construction of boson operators from fermion operators according to the recipe of the neutrino theory of light is studied. Starting from a cyclic Fock-representation for the massless fermions the boson operators are reduced by the spectral projectors of two charge-operators and form an infinite direct sum of cyclic Fock-representations. Kronig's identity expressing the fermion kinetic energy in terms of the boson kinetic energy and the squares of the charge operators is verified as an identity for strictly selfadjoint operators. It provides the key to the solubility ofLuttinger's model. A simple sufficient condition is given for the unitary equivalence of the representations linked by the canonical transformation which diagonalizes the total Hamiltonian.
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Work supported by the National Science Foundation.
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Uhlenbrock, D.A. Fermions and associated bosons of one-dimensional model. Commun.Math. Phys. 4, 64–76 (1967). https://doi.org/10.1007/BF01645177
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DOI: https://doi.org/10.1007/BF01645177