Short-range resonating-valence-bond state of even-spin ladders: A recurrent variational approach
Short-range resonating-valence-bond state of even-spin ladders: A recurrent variational approach
Using a recursive method we construct dimer and nondimer variational ansatzs of the ground state for the two-legged ladder, and compute the number of dimer coverings, the energy density and the spin correlation functions. The number of dimer coverings are given by the Fibonacci numbers for the dimer-RVB state and …