  We propose a streamlined combination scheme of the transcorrelation (TC) and
coupled cluster (CC) theory, which not only increases the convergence rate with
respect to the basis set, but also extends the applicability of the lowest
order CC approximations to strongly correlated regimes in the three dimensional
uniform electron gas (3D UEG). With the correct physical insights built into
the correlator used in TC, highly accurate ground state energies with errors
$\leq 0.001 $ a.u./electron relative to the state-of-the-art quantum Monte
Carlo results can be obtained across a wide range of densities. The greatly
improved efficiency and accuracy of our methods hold great promise for strongly
correlated solids where many other methods fail.
