Nonlinear effects in E$\otimes (b_1+b_2)$ Jahn-Teller model: Variational approach with excited phonon states and mode correlations

Eva Majernikova, S. Shpyrko

Interplay of nonlinear and quantum effects in the ground state of the E$\otimes (b_1+b_2)$ Jahn-Teller model was investigated by the {\it variational approach and exact numerical s…