2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/194991We derive the spectrum in the broken phase of a $λϕ^4$ theory, in the limit $λ\to\infty$, showing that this goes as even integers of a renormalized mass in agreement with recent lattice computations.4 pages, 1 figure. Accepted for publication in International Journal of Modern Physics AHigh Energy Physics - TheoryHigh Energy Physics - LatticeHigh Energy Physics - PhenomenologyMathematical Physicstext