Reply to Gupta and Kob's ``Comments on `Residual entropy and structural disorder in glass: A two-level model and a review of spatial and ensemble vs. Temporal sampling' [J. Non-Cryst. Solids 360 (2013) 13]''

Akira Takada , Reinhard Conradt , Pascal Richet (1)

1 IPGP - Institut de Physique du Globe de Paris

In a recent publication we considered a simple two-level system to clarify the meaning of configurational entropy in glass-forming liquids [1]. For this purpose, we calculated configurational entropy upon irreversible cooling either for conditions mimicking those of calorimetric measurements (S₂) or from a purely statistical thermodynamics standpoint (S₃). Upon critical scrutiny, however, Gupta and Kob concluded that this model does not imply any new physics and that it is "likely an unphysical artifact" [2]. These comments suggest that our study was prone to misunderstanding. We thus take this opportunity to clarify our position.

Domains: Sciences of the Universe [physics]

Akira Takada, Reinhard Conradt, Pascal Richet. Reply to Gupta and Kob's ``Comments on `Residual entropy and structural disorder in glass: A two-level model and a review of spatial and ensemble vs. Temporal sampling' [J. Non-Cryst. Solids 360 (2013) 13]''. Journal of Non-Crystalline Solids, 2014, 400, pp.72-73. ⟨10.1016/j.jnoncrysol.2014.02.003⟩. ⟨insu-03581098⟩