Recent content by beacon

There is no any unified theories predicting the decaying of electrons, I think. LURCH's viewpoint is very interesting. Can anyone explain this?

I see. Thank you all. £º£_£©

I think there is a hypothesis in your argument: One sees the laws with the same form as in SR when one can not feel the exsistence of gravity. Is this it?

I think they are interchangealbe. Probably Lagrangian is more fundamental when considering path integral and gauge symmetry. But I think it's just a kind of notation. You can also start from Lagrangian and correspondingly modify the forms of path integral and gauge symmetry.

It seems that when talking about the GR, the textbooks usually give the example of a freely falling elevator. They say in such an elevator the laws take the same form as in SR. Why in such a elevator the laws take the same form as in SR? How is it related to equivalance theorem?

By "Hierarchy problem" I mean exactly what you called the huge quadratically divergent mass correction of order 26. Once talking about Lambda, you are using cutoff regularization. But if I use dimensional regularization, the term of order 26 will become 1/epsilon and is simply dropped. So...

Hi, I have a puzzle about the hierarchy problem of higgs mass. I don't understand why delta m is much larger than m. If we use MS bar scheme, the huge correction can be simply dropped and the higgs mass only get a small correction. You can also view the SM as an effecive field theory. In this...

In critical phenomena, we can enlarge the block size(momenta fluctuation) by Kadanoff transformation, say k \rightarrow bk (b<=1) , and scale the new Hamiltonian by k' = k/b, x'=bx to recover to the original block size. In QFT, similarly integrating out the high momenta produces the effective...