Absence of Energy Level Crossing for the Ground State Energy of the Rabi Model
Masao Hirokawa, Fumio Hiroshima · arXiv (Cornell University) · 2012
The Hamiltonian of the Rabi model is considered. It is shown that the ground state energy of the Rabi Hamiltonian is simple for all values of the coupling strength, which implies the ground state energy does not cross other energy