Non-equilibrium Sachdev-Ye-Kitaev model with quadratic perturbation
نویسندگان
چکیده
We consider a non-equilibrium generalization of the mixed SYK$_4$+SYK$_2$ model and calculate energy dissipation rate $W(\omega)$ that results due to periodic modulation random quadratic matrix elements with frequency $\omega$. find possesses peak at $\omega$ close polaron splitting $\omega_R$ found recently (PRL 125, 196602), demonstrating physical significance this scale. Next, we study effect pumping finite amplitude resonance calculate, in presence pumping, low-frequency parametric modulation. an unusual phenomenon similar "dry friction" pumping.
منابع مشابه
Comments on the Sachdev-Ye-Kitaev model
We study a quantum mechanical model proposed by Sachdev, Ye and Kitaev. The model consists of N Majorana fermions with random interactions of a few fermions at a time. It it tractable in the large N limit, where the classical variable is a bilocal fermion bilinear. The model becomes strongly interacting at low energies where it develops an emergent conformal symmetry. We study two and four poin...
متن کاملNon-equilibrium 8π Josephson effect in atomic Kitaev wires
The identification of fractionalized excitations, such as Majorana quasi-particles, would be a striking signal of the realization of exotic quantum states of matter. While the paramount demonstration of such excitations would be a probe of their non-Abelian statistics via controlled braiding operations, alternative proposals exist that may be easier to access experimentally. Here we identify a ...
متن کاملNash Equilibrium Seeking for Dynamic Systems with Non-Quadratic Payoffs
We consider a general, stable nonlinear dynamic system with N inputs and N outputs, where in the steady state, the output signals represent the non-quadratic payoff functions of a noncooperative game played by the values of the input signals. We introduce a non-model based approach for locally stable convergence to a steady-state Nash equilibrium. In classical game theory algorithms, each playe...
متن کاملElementary quadratic chaotic flows with a single non-hyperbolic equilibrium
a School of Mathematics and Physics, China University of Geosciences, Wuhan, 430074, PR China b College of Mechanical Engineering, Beijing University of Technology, Beijing, 100124, PR China c Mathematical Institute, University of Oxford, Oxford, UK d Department of Physics, University of Wisconsin, Madison, WI 53706, USA e Faculty of Earth Sciences, China University of Geosciences, Wuhan, 43007...
متن کاملRegime-Switching Perturbation for Non-Linear Equilibrium Models∗
Salient macroeconomic problems often lead to highly non-linear models – for instance models incorporating endogenous crises or the zero-lower-bound on interest. Accurately capturing non-linearity in equilibria often makes estimation infeasible. Local solution methods are limited since they struggle to capture non-linearities, and the curse of dimensionality plagues global methods. This paper in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: SciPost physics
سال: 2022
ISSN: ['2542-4653']
DOI: https://doi.org/10.21468/scipostphys.12.1.031