Generalized rotating wave function for quantum Monte Carlo calculations ofrovibrational levels of n-body systems - art. no. 012506

We propose a generalization of the method proposed by Prudente and Acioli [ Chem. Phys. Lett. 302, 249 (1999)] to compute rovibrational spectra of mole cular systems. We present the expressions of the generalized rotating wave function for n-hody systems. We discuss the advantages of the current appro ach over traditional variational methods. We also obtain an important relat ion for the Euler angles in terms of the Cartesian components of Jacobi vec tors. expressions that are needed to compute the matrix elements utilizing the correlation function quantum Monte Carlo method.