Triadic interaction in the background of a pairwise spin-glass.

Phys Rev E

Department of Physics, Shahid Beheshti University, Evin, Tehran 1983969411, Iran.

Published: June 2024

Developing an equilibrium solution for a pairwise spin-glass with a quenched random infinite range shows a continuous phase transition. Models with p-spin interactions have been studied and the exact solution was provided that shows a continuous phase transition for p=2 and a first-order one for p>2. Although the p-spin interactions were studied individually without considering lower-order interactions, is it always feasible to ignore the lower ones? Here, we are interested in finding an analytical solution for considering a triadic interaction as a perturbation in the background of a pairwise interaction in the Sherrington-Kirkpatrick spin-glass model. Our results indicate a sudden phase transition as a consequence of considering triadic interactions that signal a switch from a continuous to an explosive phase transition.

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http://dx.doi.org/10.1103/PhysRevE.109.064105DOI Listing

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