  We demonstrate the accuracy of ground-state energies of the transcorrelated
Hamiltonian, employing sophisticated Jastrow factors obtained from variational
Monte Carlo, together with the coupled cluster and distinguishable cluster
methods at the level of singles and doubles excitations. Our results show that
already with the cc-pVTZ basis the transcorrelated distinguishable cluster
method gets close to complete basis limit and near full configuration
interaction quality values for relative energies of over thirty atoms and
molecules. To gauge the performance in different correlation regimes we also
investigate the breaking of the nitrogen molecule with transcorrelated coupled
cluster methods. Numerical evidence is presented to further justify an
efficient way to incorporate the major effects coming from the three-body
integrals without explicitly introducing them into the amplitude equations.
