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A Cordial Introduction to Double Scaled SYK.
Rep Prog Phys
January 2025
SISSA, via Bonomea 265, 34136 Trieste, Trieste, 34136, ITALY.
We review recent progress regarding the double scaled Sachdev-Ye-Kitaev model and other p-local quantum mechanical random Hamiltonians. These models exhibit an expansion using chord diagrams, which can be solved by combinatorial methods. We describe exact results in these models, including their spectrum, correlation functions, and Lyapunov exponent.
View Article and Find Full Text PDFTime-domain signatures of distinct correlated insulators in a moiré superlattice.
Nat Commun
January 2025
Department of Chemistry, Columbia University, New York, NY, USA.
Among expanding discoveries of quantum phases in moiré superlattices, correlated insulators stand out as both the most stable and most commonly observed. Despite the central importance of these states in moiré physics, little is known about their underlying nature. Here, we use pump-probe spectroscopy to show distinct time-domain signatures of correlated insulators at fillings of one (ν = -1) and two (ν = -2) holes per moiré unit cell in the angle-aligned WSe/WS system.
View Article and Find Full Text PDFPreparation of Carbon Dots with High Fluorescence Quantum Yields and its Detection of Hg in Simulated Wastewater.
J Fluoresc
January 2025
College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan, 250200, P.R. China.
Fluorescent carbon quantum dots (CDs) have received widespread attention for their potential applications in optical sensing. Meanwhile, as the importance of mercury ion (Hg) detection in the environment, the exploration of Hg fluorescent nanosensor based on CDs with high quantum yield is particularly intriguing. Herein, nitrogen-doped carbon quantum dots (N-CDs) were prepared by microwave method using citric acid as carbon source and urea as nitrogen source, and glycerol as microwave solvent.
View Article and Find Full Text PDFBiomarkers.
Alzheimers Dement
December 2024
Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Baden-Wuerttemberg, Germany.
Background: Florzolotau (APN-1607) tau-PET has shown distinct patterns of binding in patients with AD and 4-repeat tauopathies. We aimed to establish disease-specific tau covariance patterns in AD and PSP/CBS and validate them as user-independent quantitative biomarkers for reference-region-free evaluation of tau-PET in an independent clinical cohort.
Method: We analyzed Florzolotau PET data from four different cohorts.
Spatial Signatures of Electron Correlation in Least-Squares Tensor Hypercontraction.
J Phys Chem A
January 2025
Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States.
Least-squares tensor hypercontraction (LS-THC) has received some attention in recent years as an approach to reduce the significant computational costs of wave function-based methods in quantum chemistry. However, previous work has demonstrated that LS-THC factorization performs disproportionately worse in the description of wave function components (e.g.
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