VARIATIONAL RVB WAVE-FUNCTIONS FOR THE SPIN-1 2 J(1)-J(2) HEISENBERG-ANTIFERROMAGNET ON THE TRIANGULAR LATTICE/

'Resonating-valence-bond' (RVB)variational wavefunctions are numerical ly investigated in order to describe the ground state and the singlet low-lying excited states of the spin-1/2, J(1)-J(2) Heisenberg antifer romagnet with 1/8 less than or similar to J(2)/J(1) less than or simil ar to 1 on triangular lattices of N = 4p sites compatible with the cla ssical Neel orders. Comparison with previous exact diagonalization res ults indicates that the singlet eigenstates associated with collinear Neel order, among which the ground state is found, can be accurately d escribed with appropriate superpositions of two-sublattice RVB trial s tates, while the other singlet low-lying eigenstates associated with f our-sublattice Neel order can be well approximated from the four-subla ttice RVB trial states.