Field theories of condensed matter systems / Eduardo Fradkin. Fradkin, Eduardo. High temperature superconductivity. Hubbard model. Antiferromagnetism. QC611.98.H54 F73 1991 537.623 20 FRF Includes bibliographical references and index. Redwood City, Calif. : Addison-Wesley, c1991. c1991. 1991 Text xvi, 350 p. : eng Frontiers in physics ; no. 82 Frontiers in physics ; v. 82.