Comment on ``Spherical 2 + p spin-glass model: An analytically solvable model with a glass-to-glass transition''

Details Comment on ``Spherical 2 + p spin-glass model: An analytically solvable model with a glass-to-glass transition'' Comment on ``Spherical 2 + p spin-glass model: An analytically solvable model with a glass-to-glass transition''

2007-05-22

arxiv.org/abs/0705.3187v2

Phys. Rev. B 76, 136401 (2007)

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, third version (first version submitted to Phys. Rev. B on November 2006)

Scientific paper

10.1103/PhysRevB.76.136401

Guided by old results on simple mode-coupling models displaying glass-glass transitions, we demonstrate, through a crude analysis of the solution with one step of replica symmetry breaking (1RSB) derived by Crisanti and Leuzzi for the spherical $s+p$ mean-field spin glass [Phys. Rev. B 73, 014412 (2006)], that the phase behavior of these systems is not yet fully understood when $s$ and $p$ are well separated. First, there seems to be a possibility of glass-glass transition scenarios in these systems. Second, we find clear indications that the 1RSB solution cannot be correct in the full glassy phase. Therefore, while the proposed analysis is clearly naive and probably inexact, it definitely calls for a reassessment of the physics of these systems, with the promise of potentially interesting new developments in the theory of disordered and complex systems.

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