Although some of the principles of quantum mechanics were laid out earlier in general terms, for the most part we have concentrated so far on the case of a single particle. As the number of particles in a quantum system increases, the computational complications inevitably increase–often beyond reach if one is hoping for exact answers. Models based on physical insight and reasonable mathematical approximations have to intervene. However, as long as the particles in a system are all different one from another no new principles peculiar to multiparticle systems come into play. But, remarkably, the various elementary particles of

EP - 172 PB - Princeton University Press PY - 1999 SN - 9780691103006 SP - 149 T2 - The Odd Quantum UR - http://www.jstor.org/stable/j.ctt7s5qj.9 Y2 - 2020/11/29/ ER -