On the Real Spectra of Calogero Model with Complex Coupling
arXiv:hep-th/0310276 · doi:10.1016/j.physleta.2004.01.020
Abstract
We study the eigenvalue problem of the rational Calogero model with the coupling of the inverse-square interaction as a complex number. We show that although this model is manifestly non-invariant under the combined parity and time-reversal symmetry , the eigenstates corresponding to the zero value of the generalized angular momentum have real energies.
revtex4 8 pages, 2 figures