Question

What exactly is closed orbit theory and what assumptions go into it?

Answer 1

The closed orbits are those classical trajectories that can never leave the system and these closed orbits are then correlate with Quantun interference. To under this closed orbit theory read following articles:

PRL 58, 1731 (1987)

PRA 38, 1896 (1988)

PRA 38, 1913 (1988)

Answer 2

Hey very good morning ^ω^

here is your desired answer ❤

✔✔The closed orbits are those classical trajectories that can never leave the system and these closed orbits are then correlate with Quantun interference. To under this closed orbit theory read following articles:

✔✔PRL 58, 1731 (1987)

✔✔PRA 38, 1896 (1988)

✔✔PRA 38, 1913 (1988)