Variational Calculation of the Bound-State Wave Function in:λ(φ6φ4)2:

Abstract
The Gaussian variational approximation is used to calculate the two-particle bound-state binding energy and wave function in the model: λ(φ6φ4): in 1 + 1 dimensions. An analytic result is compared to the perturbative calculation of Dimock and Eckmann and to the numerical, lattice work of Barnes and Daniell.