如果理论本身不能重整化.人为的在拉氏量增加几项来抵消单圈双圈的发散项.这样的理论结果在低能条件下可信么?如果可信,在经典理论中又应该用原来的拉氏量,还是修改的拉氏量呢?

如果理论本身不能重整化.人为的在拉氏量增加几项来抵消单圈双圈的发散项.这样的理论结果在低能条件下可信么?

Yes, with some qualifications.



如果可信,在经典理论中又应该用原来的拉氏量,还是修改的拉氏量呢?


You should use the modified one.

It is probably useful if you say more precisely what Lagrangian you are using and which problem you are trying to solve.