Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
We study a dephasing many-body open quantum system that hosts, together with the infinite-temperature state, another additional stationary state, that is associated with a nonextensive strong symmetry. This state, that is a pure dark state, is exceptional in that it retains memory of the initial condition, whereas any orthogonal state evolves toward the infinite-temperature state erasing any information on the initial state. We discuss the approach to stationarity of the model focusing in particular on the fate of interfaces between the two states. A simple model based on a membrane picture helps developing an effective large-scale theory, which is different from the usual hydrodynamics since no extensive conserved quantities are present. The fact that the model reaches stationary properties on timescales that diverge with the system size, while the Lindbladian gap is finite, is duly highlighted. We point out the reasons for considering these exceptional stationary states as quantum many-body scars in the open system framework.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/zn9v-k73w | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Blood， which forms part of the systemic circulatory system， contains proteins from various tissues and organs. Hence， blood samples are ideal vehicles for studying diseases and physiological states. Plasma is an important component of blood and is essential for clinical proteomics research.
View Article and Find Full Text PDFOptimized NRBO-VMD-AM-BiLSTM Hybrid Architecture for Enhanced Dissolved Gas Concentration Prediction in Transformer Oil Soft Sensors.
Sensors (Basel)
August 2025
College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010080, China.
Soft sensors have emerged as indispensable tools for predicting dissolved gas concentrations in transformer oil-critical indicators for fault diagnosis that defy direct measurement. Addressing the persistent challenge of prediction inaccuracy in existing methods, this study introduces a novel hybrid architecture integrating time-series decomposition, deep learning prediction, and signal reconstruction. Our approach initiates with variational mode decomposition (VMD) to disassemble original gas concentration sequences into stationary intrinsic mode functions (IMFs).
View Article and Find Full Text PDFSustainable integrated synthesis of high-yield and high-purity lignin-derived carbon dots: Dual-functional fluorescence detection and efficient chromatographic separation of nitro-antibiotics.
Food Chem
August 2025
School of Pharmacy, Southwest Medical University, Luzhou 646000, China.. Electronic address:
This study presents a sustainable integrated bottom-up/top-down strategy for high-yield synthesis of high-purity carbon dots (CDs) from lignin (Lg). Highly graphitized Lg-derived char (Lg-char) was first obtained with an 80.3 wt% yield via rapid air-assisted pyrolysis, followed by mild hydrothermal oxidation to produce Lg-CDs with an 40.
View Article and Find Full Text PDFResearch on Bearing Fault Diagnosis Based on VMD-RCMWPE Feature Extraction and WOA-SVM-Optimized Multidataset Fusion.
Sensors (Basel)
August 2025
National Engineering Research Center for Technology and Equipment of Green Coating, Lanzhou Jiaotong University, Lanzhou 730070, China.
Bearings are critical components whose failures in industrial machinery can lead to catastrophic breakdowns and costly downtime; yet, accurate early-stage diagnosis remains challenging due to the non-stationary, nonlinear nature of vibration signals and noise interference. This study proposes a multidataset-integrated bearing fault diagnosis methodology incorporating variational mode decomposition (VMD), refined composite multiscale weighted permutation entropy (RCMWPE) feature extraction, and whale optimization algorithm (WOA)-optimized support vector machine (SVM). Addressing the non-stationary and nonlinear characteristics of bearing vibration signals, raw signals are first decomposed via VMD to effectively separate intrinsic mode functions (IMFs) carrying distinct frequency components.
View Article and Find Full Text PDFIodine-Manipulated Pt Single Atoms Bridged between Graphitic CN Nanosheets for Boosted Photocatalytic Hydrogen Evolution.
Small
August 2025
College of Environment and Resources, Xiangtan University, Xiangtan, 411105, P. R. China.
The platinum (Pt) single-atom site represents the limit of atomic utilization in Pt catalysis. In alkaline hydrogen evolution reaction (HER), slow water dissociation (Volmer step) and subsequent strong interactions between Pt and H atoms reduce the efficiency of H desorption, resulting in an overall inefficient hydrogen evolution reaction. Addressing how to adjust the electronic structure of the Pt single-atom site to further enhance the catalytic efficiency remains a significant scientific challenge.
View Article and Find Full Text PDF