Recent content by sinc

Thank you for your reply. The link given by you is so long that I need some time to follow. However, I donn't agree with your point that "Time and space scale differently ONLY in non-relativistic theory". It is the textbook's convention that space and time scale the same in relativistic region...

We are considering the most general rescaling, so space and time scale differently. This is especially true for nonrelativistic case.

if the spacetime coordinates scales as x_{0}→S^{a}\bar{x_0}, x_{i}→S^{b}\bar{x_i},then the potential vector scales as follow: A_{0}→S^{a+d}\bar{A_0}, A_{i}→S^{b+d}\bar{A_i}

why the topological term in gauge theory, ε_{\mu\nu ρσ}F^{\mu \nu} F^{ρσ} ,is scale-independent?