Ben Simons: Condensed matter field theory, Cambridge Univ. Press, 2009, James D. Bjorken, Sidney D. Drell: Relativistic quantum mechanics, New York, McGraw-Hill, 1964 . An introduction to quantum field theory, by M.E. Peskin and H.D. Schroeder, Franz Schwabl: Advanced Quantum Mechanics, Berlin and elsewhere, Springer, 2009 External links What is "Relativistic Canonical Quantization"? Pedagogic Aides to Quantum Field Theory Click on the links for Chaps. 1 and 2 at this site to find an extensive, simplified introduction to second quantization. See Sect. 1.5.2 in Chap. 1. See Sect. 2.7 and the chapter summary in Chap. 2. Quantum field theory Mathematical quantization