تقرير
Thermodynamic Stability at the Two-Particle Level
| العنوان: | Thermodynamic Stability at the Two-Particle Level |
|---|---|
| المؤلفون: | Kowalski, A., Reitner, M., Del Re, L., Chatzieleftheriou, M., Amaricci, A., Toschi, A., Medici, L. de', Sangiovanni, G., Schäfer, T. |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Statistical Mechanics |
| الوصف: | We show how the stability conditions for a system of interacting fermions that conventionally involve variations of thermodynamic potentials can be rewritten in terms of local one- and two-particle correlators. We illustrate the applicability of this alternative formulation in a multi-orbital model of strongly correlated electrons at finite temperatures, inspecting the lowest eigenvalues of the generalized local charge susceptibility in proximity of the phase-separation region. Additionally to the conventional unstable branches, we address unstable solutions possessing a positive, rather than negative compressibility. Our stability conditions require no derivative of free energy functions with conceptual and practical advantages for actual calculations and offer a clear-cut criterion for analyzing the thermodynamics of correlated complex systems. Comment: 7+8 pages, 3+1 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2309.11108 |
| رقم الأكسشن: | edsarx.2309.11108 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |