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We develop a form factor approach to the study of dynamical correlation functions of quantum integrable models in the critical regime. As an example, we consider the quantum non-linear Schr\"odinger model. We derive long-distance/long-time…

数学物理 · 物理学 2017-03-17 N. Kitanine , K. K. Kozlowski , J. M. Maillet , N. A. Slavnov , V. Terras

This is the second paper in a cycle investigating the exact solution of loop equations in decaying turbulence. We perform numerical simulations of the Euler ensemble, suggested in the previous work, as a solution to the loop equations. We…

流体动力学 · 物理学 2024-03-04 Alexander Migdal

The entangled behavior of different dimensional systems driven by classical external random field is investigated. The amount of the survival entanglement between the components of each system is quantified. There are different behaviors of…

量子物理 · 物理学 2016-09-15 N. Metwally , H. Eleuch , A. -S. Obada

We review our results for the dynamics of isolated many-body quantum systems described by one-dimensional spin-1/2 models. We explain how the evolution of these systems depends on the initial state and the strength of the perturbation that…

统计力学 · 物理学 2017-08-03 Lea F. Santos , E. Jonathan Torres-Herrera

We study localization properties of continuously monitored dynamics and associated measurement-induced phase transitions in disordered quantum many-body systems on the basis of the quantum trajectory approach. By calculating the fidelity…

统计力学 · 物理学 2023-06-09 Kazuki Yamamoto , Ryusuke Hamazaki

Dynamical systems in nature exhibit selfsimilar fractal fluctuations and the corresponding power spectra follow inverse power law form signifying long-range space-time correlations identified as self-organized criticality. The physics of…

综合物理 · 物理学 2008-05-23 A. M. Selvam

We consider disordered tight-binding models which Green's functions obey the self-consistent cavity equations . Based on these equations and the replica representation, we derive an analytical expression for the fractal dimension D_{1} that…

无序系统与神经网络 · 物理学 2016-10-05 B. L. Altshuler , L. B. Ioffe , V. E. Kravtsov

Quantum many-body scarring is believed to be the mechanism behind long-lived coherent oscillations in interacting Rydberg atom chains. These persistent oscillations are due to the large overlap of the many-body scars with certain initial…

量子物理 · 物理学 2020-12-07 Shane Dooley , Graham Kells

Two generically different but universal dynamical quantum many-body behaviors are discovered by probing the stability of trapped fragmented bosonic systems with strong repulsive finite/long range inter-particle interactions. We use…

量子气体 · 物理学 2014-10-21 Oksana I. Streltsova , Ofir E. Alon , Lorenz S. Cederbaum , Alexej I. Streltsov

Non-universal dynamics is shown to occur in a one-dimensional non-equilibrium system of hard-core particles. The stochastic processes included are pair creation and annihilation (with rates e and e') and symmetric hopping rates which…

统计力学 · 物理学 2009-10-31 R. B. Stinchcombe , J. E. Santos , M. D. Grynberg

This article deals with the estimation of fractal dimension of spatio-temporal patterns that are generated by numerically solving the Swift Hohenberg (SH) equation. The patterns were converted into a spatial series (analogous to time…

斑图形成与孤子 · 物理学 2020-11-03 Debasmita Banerjee , Amit Kumar Jha , A. N. Sekar Iyengar , M. S. Janaki

Fractal geometry proved to be an effective mathematical tool for exploring real geographical space based on digital maps and remote sensing images. Whether the fractal theory tool can be applied to abstract geographical space has not been…

物理与社会 · 物理学 2023-06-06 Yanguang Chen

We have investigated scaling properties of the Aubry-Andr\'e model and related one-dimensional quasiperiodic Hamiltonians near their localisation transitions. We find numerically that the scaling of characteristic energies near the ground…

无序系统与神经网络 · 物理学 2018-10-09 Attila Szabó , Ulrich Schneider

We present a numerical method to simulate the dynamics of continuous-variable quantum many-body systems. Our approach is based on custom neural-network many-body quantum states. We focus on dynamics of two-dimensional quantum rotors and…

量子物理 · 物理学 2023-10-12 Matija Medvidović , Dries Sels

Fractal dimension is widely adopted in spatial databases and data mining, among others as a measure of dataset skewness. State-of-the-art algorithms for estimating the fractal dimension exhibit linear runtime complexity whether based on…

数据库 · 计算机科学 2009-05-27 Christos Attikos , Michael Doumpos

A non-ergodic quantum state of a many body system is in general random as well as multi-parametric, former due to a lack of exact information due to complexity and latter reflecting its varied behavior in different parts of the Hilbert…

量子物理 · 物理学 2023-06-21 Devanshu Shekhar , Pragya Shukla

The emergence of fractal features in the microscopic structure of space-time is a common theme in many approaches to quantum gravity. In this work we carry out a detailed renormalization group study of the spectral dimension $d_s$ and walk…

高能物理 - 理论 · 物理学 2015-05-30 Martin Reuter , Frank Saueressig

Interacting quantum spin models are remarkably useful for describing different types of physical, chemical, and biological systems. Significant understanding of their equilibrium properties has been achieved to date, especially for the case…

量子物理 · 物理学 2015-06-16 Johannes Schachenmayer , Alexander Pikovski , Ana Maria Rey

The purpose of this paper is to study the fractal phenomena in large data sets and the associated questions of dimension reduction. We examine situations where the classical Principal Component Analysis is not effective in identifying the…

This work presents a detailed analytical and geometrical investigation of the (2+1)-dimensional Boiti-Leon-Pempinelli system, a nonlinear dispersive model arising in the context of fluid and plasma dynamics. By employing a projective…

数学物理 · 物理学 2025-08-12 Saugata Dutta , Kajal Kumar Mondal , Prasanta Chatterjee