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I am reading this paper(pdf) and on page 11, the chiral boson theory on a cylinder is studied when both edges of the cylinder are brought in close proximity so that electron is allowed.

Why is it that for large tunneling amplitudes, $g$, the field $\phi$ can be treated 'classically' in the sense that it gets pinned to the classical minima of the cosine to obtain the ground state energy?

Could someone give a more detailed explanation?

I am reading this paper(pdf) and on page 11, the chiral boson theory on a cylinder is studied when both edges of the cylinder are brought in close proximity so that electron is allowed.

Why is it that for large tunneling amplitudes, $g$, the field $\phi$ can be treated 'classically' in the sense that it gets pinned to the classical minima of the cosine to obtain the ground state energy?

Could someone give a more detailed explanation?

I am reading

dao.mit.edu/~wen/pub/cll.pdf‎ .

On page 11 the chiral boson theory on a cylinder is studied when both edges of the cylinder are brought in close proximity so that electron is allowed.

Why is it that for large tunneling amplitudes g the field $\phi$ can be treated 'classicaly' in the sense that it gets pinned to the classical minima of the cosine to obtain the ground state energy?

I am quite new in the field and I would be very happy for a more detailed explanation.

Best.

I am reading this paper(pdf) and on page 11, the chiral boson theory on a cylinder is studied when both edges of the cylinder are brought in close proximity so that electron is allowed.

Why is it that for large tunneling amplitudes, $g$, the field $\phi$ can be treated 'classically' in the sense that it gets pinned to the classical minima of the cosine to obtain the ground state energy?

Could someone give a more detailed explanation?