The early suggestion by Aharon, Susskind, and John Kogut that a vacuum polarization mechanism can account for quark confinement was extremely influential. Additional important joint papers on strong interactions, partons, and spontaneous chiral symmetry breaking appeared in the early 1970s. The collaboration with Susskind led also to Aharon’s familiarity with string theories and to the early paper with Aharonov of a dual string model for spinning particles.

A paper with Herbert Neuberger and Shmuel Nussinov, suggesting that tunneling that breaks chromoelectric flux tubes can account for multiple particle production in high energy collisions, was later incorporated into the Lund Model. During a sabbatical at Princeton University, Aharon wrote the first comprehensive work on the subtle subject of gauge fields on the null plane.