A note on the PT-invariant periodic potential V(x)=4 cos^2 x + 4 i V_0 sin 2x

Bikashkali Midya, Barnana Roy, Rajkumar Roychoudhury

It is shown that the PT symmetric Hamiltonian with the periodic potential V(x) = 4 cos^2 x + 4 i V_0 sin 2x can be mapped into a Hermitian Hamiltonian for $V_0<0.5$, by a similarit…