Hi, I am was reading about a double well potential. I came across the word "quantum tunnel splitting". Can anyone tell me what this is? For example if we have a double well potential we can have a |L> and |R> as two states. The article said that if we ignore the tunneling the two states are degenerate. But if we include the tunneling the "ground state" is split. I do not understand why and how this is happening. Can anybody please explain me?