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![]() | Mattis, Daniel C. | Exact solution of a many-fermion system and its associated boson field | Luttinger's exactly soluble model of a one-dimensional many-fermion system is discussed. We show that he did not solve his model properly because of the paradoxical fact that the density operator commutators [p(p), p(-p')], which always vanish for any finite number of particles, no longer vanish in ... | Many-electron problem; Fermi surface; Boson field; Dirac sea | 1965 |