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We study the three dimensional O(N) invariant bosonic vector model with a$\frac{\lambda}{N}(\phi^{a}\phi^{a})^{2}$ interaction at its infrared fixedpoint, using a bilocal field approach and in an $1/N$ expansion. We identify a(negative energy squared) bound state in its spectrum about the large $N$conformal background. At the critical point this is identified with the$\Delta=2$ state. We further demonstrate that at the critical point the$\Delta=1$ state disappears from the spectrum.

Large N bilocals at the infrared fixed point of the three dimensional O(N) invariant vector theory with a quartic interaction