Critical Quenches, OTOCs and Early-Time Chaos
| العنوان: | Critical Quenches, OTOCs and Early-Time Chaos |
|---|---|
| المؤلفون: | Suchetan Das, Bobby Ezhuthachan, Arnab Kundu, Somnath Porey, Baishali Roy |
| المصدر: | Journal of High Energy Physics |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | High Energy Physics - Theory, Nuclear and High Energy Physics, Condensed Matter - Strongly Correlated Electrons, High Energy Physics - Theory (hep-th), Strongly Correlated Electrons (cond-mat.str-el), FOS: Physical sciences |
| الوصف: | In this article, we explore dynamical aspects of Out-of-Time-Order correlators (OTOCs) for critical quenches, in which an initial non-trivial state evolves with a CFT-Hamiltonian. At sufficiently large time, global critical quenches exhibit a universal thermal-behaviour in terms of low-point correlators. We demonstrate that, under such a quench, OTOCs demarcate chaotic CFTs from integrable CFTs by exhibiting a characteristic exponential Lyapunov growth for the former. Upon perturbatively introducing inhomogeneity to the global quench, we further argue and demonstrate with an example that, such a perturbation parameter can induce a parametrically large scrambling time, even for a CFT with an order one central charge. This feature may be relevant in designing measurement protocols for non-trivial OTOCs, in general. Both our global and inhomogeneous quench results bode well for an upper bound on the corresponding Lyapunov exponent, that may hold outside thermal equilibrium. 28 pages, one figure |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78994a47be523bce4a511ccd0e14a015 http://arxiv.org/abs/2108.12884 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....78994a47be523bce4a511ccd0e14a015 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |