[Mouillage et stratification pour le modèle SOS II : transitions de niveau, états de Gibbs et régularité de l’énergie libre]
Nous considérons le modèle « Solid-On-Solid » (SOS) incluant une interaction avec une paroi. Il s’agit du modèle de mécanique statistique associé au champ à valeurs entières et à la fonctionnelle d’énergie
Nous démontrons que pour des valeurs de suffisamment grandes, il existe une suite décroissante , satisfaisant , et telle que : l’énergie libre associée au système est infiniment dérivable sur , et n’admet pas de dérivée aux points ; pour tout entier , pour les valeurs de dans l’intervalle (avec la convention ), il existe une unique mesure de Gibbs correspondant à une hauteur de localisation , alors qu’aux points de non-dérivabilité il y a multiplicité des états de Gibbs, en particulier il en existe deux correspondant aux hauteurs de localisation et respectivement. La valeur marque donc une transition de niveau entre la hauteur et la hauteur . Ces résultats et ceux prouvés dans [28] fournissent une description complète des transitions de niveau et de la transition de mouillage pour le modèle SOS.
We consider the Solid-on-Solid model interacting with a wall, which is the statistical mechanics model associated with the integer-valued field , and the energy functional
We prove that for sufficiently large, there exists a decreasing sequence , satisfying , and such that: The free energy associated with the system is infinitely differentiable on , and not differentiable on . For each within the interval (with the convention ), there exists a unique translation invariant Gibbs state which is localized around height , while at a point of non-differentiability, at least two ergodic Gibbs states coexist. The respective typical heights of these two Gibbs states are and . The value corresponds thus to a first order layering transition from level to level . These results combined with those obtained in [28] provide a complete description of the wetting and layering transition for SOS.
Accepté le :
Publié le :
DOI : 10.5802/jep.110
Keywords: Solid-on-Solid, wetting, layering transitions, Gibbs states
Mot clés : Modèle SOS, mouillage, transitions de niveau, état de Gibbs
@article{JEP_2020__7__1_0, author = {Lacoin, Hubert}, title = {Wetting and layering for {Solid-on-Solid} {II:} {Layering} transitions, {Gibbs} states, and regularity of the free energy}, journal = {Journal de l{\textquoteright}\'Ecole polytechnique {\textemdash} Math\'ematiques}, pages = {1--62}, publisher = {Ecole polytechnique}, volume = {7}, year = {2020}, doi = {10.5802/jep.110}, zbl = {07128376}, mrnumber = {4033749}, language = {en}, url = {http://www.numdam.org/articles/10.5802/jep.110/} }
TY - JOUR AU - Lacoin, Hubert TI - Wetting and layering for Solid-on-Solid II: Layering transitions, Gibbs states, and regularity of the free energy JO - Journal de l’École polytechnique — Mathématiques PY - 2020 SP - 1 EP - 62 VL - 7 PB - Ecole polytechnique UR - http://www.numdam.org/articles/10.5802/jep.110/ DO - 10.5802/jep.110 LA - en ID - JEP_2020__7__1_0 ER -
%0 Journal Article %A Lacoin, Hubert %T Wetting and layering for Solid-on-Solid II: Layering transitions, Gibbs states, and regularity of the free energy %J Journal de l’École polytechnique — Mathématiques %D 2020 %P 1-62 %V 7 %I Ecole polytechnique %U http://www.numdam.org/articles/10.5802/jep.110/ %R 10.5802/jep.110 %G en %F JEP_2020__7__1_0
Lacoin, Hubert. Wetting and layering for Solid-on-Solid II: Layering transitions, Gibbs states, and regularity of the free energy. Journal de l’École polytechnique — Mathématiques, Tome 7 (2020), pp. 1-62. doi : 10.5802/jep.110. http://www.numdam.org/articles/10.5802/jep.110/
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