تقرير
Probing quantum chaos through singular-value correlations in sparse non-Hermitian SYK model
| العنوان: | Probing quantum chaos through singular-value correlations in sparse non-Hermitian SYK model |
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| المؤلفون: | Nandy, Pratik, Pathak, Tanay, Tezuka, Masaki |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter High Energy Physics - Theory Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Strongly Correlated Electrons, High Energy Physics - Theory |
| الوصف: | Utilizing singular value decomposition, our investigation focuses on the spectrum of the singular values within a sparse non-Hermitian Sachdev-Ye-Kitaev (SYK) model. Unlike the complex eigenvalues typical of non-Hermitian systems, singular values are inherently real and positive. Our findings reveal a congruence between the statistics of singular values and those of the analogous Hermitian Gaussian ensembles. An increase in sparsity results in the non-Hermitian SYK model deviating from its chaotic behavior, a phenomenon precisely captured by the singular value ratios. Our analysis of the singular form factor ({\upsigma}FF), analogous to the spectral form factor (SFF) indicates the disappearance of the linear ramp with increased sparsity. Additionally, we define singular complexity, inspired by the spectral complexity in Hermitian systems, whose saturation provides a critical threshold of sparseness. Such disintegration is likely associated with the breakdown of the existing holographic dual for non-Hermitian systems. Comment: v1: 10 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| الوصول الحر: | http://arxiv.org/abs/2406.11969Test |
| رقم الانضمام: | edsarx.2406.11969 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |