Feynman’s Path Integral explained with basic Calculus

This has been the best presentation on Feynman path integrals I have seen. This book starts from the ground up and does not skip any steps in the derivations, even completely showing how to calculate Gaussian integrals. It starts from the perspective of pure math in defining the functional integral as a "'path' integral" (path = function), and then applies the path integral formalism to physical problems in quantum mechanics.I bought this book because the title "...with basic calculus" got me thinking that this was a ground-up approach. Every other book discussing path integrals always skips steps in the derivations. All steps are shown. There are exercises at the end of sections with workout out solutions in the back.Best choice for an INTRODUCTION to path integrals for self-study. The best track would be to use this book first, then graduate to Quantum Mechanics & Path Integrals by Feynman & Hibbs, then graduate to a book on path integral Quantum Field Theory.

This is a wonderfully written book for those who might be looking for a different, intuitive approach to the way quantum mechanics is typically taught. It is a careful, patient explanation of Feynman's alternative formulation to quantum mechanics using his path integral approach. The book carefully describes the motivation and mathematical methods used in that approach using high school algebra and basic calculus. It is fun to read and a good companion to Feynman & Hibbs "Quantum Mechanics and Path Integrals".

I am not a physicist. I purchased this book, intrigued by the title as calculus of variations is not limited to just physics. I have not been disappointed. The author has gone to great lengths to explain the principle of least (stationary) ction and derive the Euler-Lagrange equations from first principles with only background being calculus and Taylor series. This is one of the best explanations I have seen on the subject.In the second part of the book the author continues with his pedagogical style to explain Feynman's path integrals in Quantum Mechanics and links it with the stationary action principle described earlier. All in all, a gem of a book and a great value for the money considering its price. All this musta have taken considerable time and effort on part of the author and kudos to him for trying to explain complex concepts so nicely.

this book does a good job in explaining advanced materials despite having only around 150 pages of contents. But mathematics is no longer rigorous when you reached end of chapter 5 and so forth.

This book clearly presents the essence of Feynman’s path integral approach to quantum mechanics. It requires only a good knowledge of first year calculus and the willingness to work through some derivations with th author. As a bonus you can see the intuition behind de Broglie’s characterization of momentum, Einstein’s energy-wave formulation, as well as a derivation of the Schrödinger equation. If you are familiar with Heisenberg or Schrödinger methods, the path integral approach will illuminate them and provide new perspectives. And this is the place to start.

Highly recommend this book! Very clear and concise explanation of Feynman’s path integral approach you won’t find anywhere else. Only a basic understanding of calculus and physics required.

It's a fantastically good book to understand the Feynman's Path Integral that makes easy the link with deBroglie, Einstein, Schrödinger and Heisenberg uncertainty in a human easy way. Hopefully we can expect more such technical books from PhD Swapnonil Banerjee in the future.

Otra obra magistral del Dr. Richard Feynman explicada de un modo fácil de entender y de desarrollar. El autor realizó un excelente trabajo.