《The Quantum Theory of Fields Volume I:Foundations》的笔记-Preface
- 2011-09-21 10:45:54
Why should we believe in the rules of canonical quantization or path integration? Why should we adopt the simple field equations and Lagrangians that are found in the literature? For that matter, why have fields at all?Our purpose in theoretical physics is not just to describe the world as we find it, but to explain -- in terms of a few fundamental principles -- why the world is the way it is.
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