By David J. Toms
This e-book is an advent to the Schwinger motion precept in quantum mechanics and quantum box conception, with purposes to quite a few diverse types together with Bose-Einstein condensation, the Casimir impression, and trapped Fermi gases. The publication starts off with a short evaluate of the motion precept in classical mechanics and classical box concept. It then strikes directly to quantum box thought, targeting the potent motion strategy. this is often brought as easily as attainable by utilizing the zero-point strength of the straightforward harmonic oscillator because the place to begin. The ebook concludes with a extra whole definition of the potent motion, and demonstrates how the provisional definition used previous is the 1st time period within the systematic loop enlargement. The renormalization of interacting scalar box concept is gifted to two-loop order. This publication will curiosity graduate scholars and researchers in theoretical physics who're conversant in quantum mechanics.