We study p-spin glass models on regular random graphs. By analyzing the
Franz-Parisi potential with a two-body cavity field approximation under the
replica symmetric ansatz, we obtain a good approximation of the 1RSB transition
temperature for p=3. Our calculation method is much easier than the 1RSB
cavity method because the result is obtained by solving self-consistent
equations with Newton's method.Comment: 21 pages, 1 figur