Recent content by Frankww

I've got a difficult integral, that is, \int_{-\infty}^{\infty} e^{\lambda x^{2}} dx . Could anybody find its solution?

Thank you very much for your answer. I'll review them, then.

Quesion in approaching to Path Integral I've just read "Quantum Mechanics and Path Integral" book which was written by Feynman, he said the phase of probability amplitude is proportional to "the ACTION S in units of Quantum of action \hbar . What is the reason to be that? Can anybody explain...

I've planned my free time to study Quantum Mechanics. How do I begin? Which books should I use in my self-study? And how difficult will the mathematical tecnique be? Thank you for all.

What does energy really mean in the real world? Or it is just a mathematical tool?