+ wishlist Path Integral Approach to Quantum Physics: An Introduction (Theoretical and Mathematical Physics) [9783540611066] Add to Cart The item has been added Author: Gert Roepstorff Path Integral Approach to Quantum Physics: An Introduction (Theoretical and Mathematical Physics) [9783540611066] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 49 12% 50 - 99 13% 100+ 14% List Price As Low as $89.99 Format: Paperback