تقرير
Non-equilibrium Sachdev-Ye-Kitaev model with quadratic perturbation
| العنوان: | Non-equilibrium Sachdev-Ye-Kitaev model with quadratic perturbation |
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| المؤلفون: | Lunkin, A. V., Feigel'man, M. V. |
| المصدر: | SciPost Phys. 12, 031 (2022) |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter High Energy Physics - Theory |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, High Energy Physics - Theory |
| الوصف: | We consider a non-equilibrium generalization of the mixed SYK$_4$+SYK$_2$ model and calculate the energy dissipation rate $W(\omega)$ that results due to periodic modulation of random quadratic matrix elements with a frequency $\omega$. We find that $W(\omega)$ possesses a peak at $\omega$ close to the polaron energy splitting $\omega_R$ found recently (PRL 125, 196602), demonstrating the physical significance of this energy scale. Next, we study the effect of energy pumping with a finite amplitude at the resonance frequency $\omega_R$ and calculate, in presence of this pumping, non-equilibrium dissipation rate due to low-frequency parametric modulation. We found an unusual phenomenon similar to "dry friction" in presence of pumping. Comment: Submission to SciPost 21 pages, 2 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.21468/SciPostPhys.12.1.031 |
| URL الوصول: | http://arxiv.org/abs/2106.11245 |
| رقم الأكسشن: | edsarx.2106.11245 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.21468/SciPostPhys.12.1.031 |
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