Resumen: Recent theoretical advances predict the existence, deep into the glass phase, of a novel phase transition, the so-called Gardner transition. This transition is associated with the emergence of a complex free energy landscape composed of many marginally stable sub-basins within a glass metabasin. In this study, we explore several methods to detect numerically the Gardner transition in a simple structural glass former, the infinite-range Mari-Kurchan model. The transition point is robustly located from three independent approaches: (i) the divergence of the characteristic relaxation time, (ii) the divergence of the caging susceptibility, and (iii) the abnormal tail in the probability distribution function of cage order parameters. We show that the numerical results are fully consistent with the theoretical expectation. The methods we propose may also be generalized to more realistic numerical models as well as to experimental systems Idioma: Inglés DOI: 10.1103/PhysRevE.92.012316 Año: 2015 Publicado en: Physical Review E 92, 1 (2015), 012821 [15 pp] ISSN: 2470-0045 Factor impacto JCR: 2.252 (2015) Categ. JCR: PHYSICS, MATHEMATICAL rank: 6 / 53 = 0.113 (2015) - Q1 - T1 Categ. JCR: PHYSICS, FLUIDS & PLASMAS rank: 10 / 30 = 0.333 (2015) - Q2 - T2 Factor impacto SCIMAGO: 1.183 - Condensed Matter Physics (Q1) - Statistical and Nonlinear Physics (Q1) - Statistics and Probability (Q2)