Data supporting Figure 5 of "Simple Fermionic backflow states via a systematically improvable tensor decomposition"

Ground state energies for the 6x6 hydrogen lattice in the STO-6G basis set at different interatomic distances obtained by the following methods:

• variational Monte Carlo (VMC) with the CPD backflow ansatz using support dimension M=1 and no exchange cutoff
• VMC with the CPD backflow ansatz using support dimension M=1 and an exchange cutoff K=5
• VMC with the Gaussian Process state (GPS) multiplied by a Slater determinant using support dimension M=72
• density matrix renormalization group (DMRG) with the matrix product state tensor network using bond dimension M=1024
• unrestricted CCSD (UCCSD)
• restricted Hartree-Fock (RHF)