Complex Calogero model with real energies

Miloslav Znojil, Milos Tater
2001 Journal of Physics A: Mathematical and General  
We show that and how PT symmetry (interpreted as a "weakened Hermiticity") can be extended to the exactly solvable two- and three-particle Calogero model.
doi:10.1088/0305-4470/34/8/321 fatcat:smntgzrqgbcnxmw7h6xwfysgra