Publications (117)
Position reconstruction and surface background model for the PandaX-4T detector
Zhicheng Qian, Linhui Gu, Chen Cheng +100
We report the position reconstruction methods and surface background model for the PandaX-4T dark matter direct search experiment. This work develops two position reconstruction al…
Non-monotonic field dependence of Kondo conductance in a single-electron transistor driven by microwave field
Zhan Cao, Chen Cheng, Fu-Zhou Chen +1
The interplay between magnetic field and microwave applied in a single-electron transistor(SET) has a profound influence on the Kondo effect, as shown in a recent experiment[B. Hem…
STAIF: A Stage-wise Optimization for Complex Instruction Following
Jian Hong, Chen Cheng, Quan Liu +2
Following complex instructions with multiple explicit constraints remains a fundamental challenge for large language models (LLMs). Existing alignment methods, such as DPO, optimiz…
AgentScope: A Flexible yet Robust Multi-Agent Platform
Dawei Gao, Zitao Li, Xuchen Pan +16
With the rapid advancement of Large Language Models (LLMs), significant progress has been made in multi-agent applications. However, the complexities in coordinating agents' cooper…
Machine learning for phase ordering dynamics of charge density waves
Chen Cheng, Sheng Zhang, Gia-Wei Chern
We present a machine learning (ML) framework for large-scale dynamical simulations of charge density wave (CDW) states. The charge modulation in a CDW state is often accompanied by…
Measurement of Double Beta Decay Half-life of Xe with the PandaX-4T Detector
PandaX Collaboration, Lin Si, Zhaokan Cheng +85
Precise measurement of two-neutrino double beta decay (DBD) half-life is an important step for the searches of Majorana neutrinos with neutrinoless double beta decay. We report the…
Investigating Berezinskii-Kosterlitz-Thouless phase transitions in Kagome spin ice by quantifying Monte Carlo process: Distribution of Hamming distances
Wen-Yu Su, Feng Hu, Chen Cheng +1
We reinvestigate the phase transitions of the Ising model on the Kagome lattice with antiferromagnetic nearest-neighbor and ferromagnetic next-nearest-neighbor interactions, which…
IOP-FL: Inside-Outside Personalization for Federated Medical Image Segmentation
Meirui Jiang, Hongzheng Yang, Chen Cheng +1
Federated learning (FL) allows multiple medical institutions to collaboratively learn a global model without centralizing client data. It is difficult, if possible at all, for such…
Constraining self-interacting dark matter with the full dataset of PandaX-II
Jijun Yang, Abdusalam Abdukerim, Wei Chen +69
Self-interacting Dark Matter (SIDM) is a leading candidate proposed to solve discrepancies between predictions of the prevailing cold dark matter theory and observations of galaxie…
Many-body Localization in Clean Chains with Long-Range Interactions
Chen Cheng
The strong long-range interaction leads to localization in the closed quantum system without disorders. Employing the exact diagonalization method, the author numerically investiga…
A search for two-component Majorana dark matter in a simplified model using the full exposure data of PandaX-II experiment
Ying Yuan, Abdusalam Abdukerim, Zihao Bo +75
In the two-component Majorana dark matter model, one dark matter particle can scatter off the target nuclei, and turn into a slightly heavier component. In the framework of a simpl…
Tackling small eigen-gaps: Fine-grained eigenvector estimation and inference under heteroscedastic noise
Chen Cheng, Yuting Wei, Yuxin Chen
This paper aims to address two fundamental challenges arising in eigenvector estimation and inference for a low-rank matrix from noisy observations: (1) how to estimate an unknown…
Probing scalar-neutrino and scalar-dark-matter interactions with PandaX-4T
PandaX Collaboration, Tao Li, Zihao Bo +113
Scalar-mediated interactions may exist among neutrinos, dark matter particles, or between the two. Double -decay experiments provide a powerful tool to probe such exotic intera…
Qwen-Image Technical Report
Chenfei Wu, Jiahao Li, Jingren Zhou +36
We present Qwen-Image, an image generation foundation model in the Qwen series that achieves significant advances in complex text rendering and precise image editing. To address th…
An explicit evolution from Néel to striped antiferromagnetic states in the spin-1/2 - Heisenberg model on the square lattice
Yun-Tong Yang, Fu-Zhou Chen, Chen Cheng +1
The frustrated spin- Heisenberg model on the square lattice has been extensively studied since 1988 because of its close relationship to the high-temperature superco…
Asymmetry Helps: Eigenvalue and Eigenvector Analyses of Asymmetrically Perturbed Low-Rank Matrices
Yuxin Chen, Chen Cheng, Jianqing Fan
This paper is concerned with the interplay between statistical asymmetry and spectral methods. Suppose we are interested in estimating a rank-1 and symmetric matrix $\mathbf{M}^{\s…
Measurement of solar neutrino flux with the new PandaX-4T data
PandaX Collaboration, Peiyuan Chen, Wei Chen +104
We report a new measurement of the solar proton--proton () neutrino flux via neutrino--electron elastic scattering using the PandaX-4T Run 2 data set collected between 2024 and…
Neutron-induced nuclear recoil background in the PandaX-4T experiment
Zhou Huang, Guofang Shen, Qiuhong Wang +77
Neutron-induced nuclear recoil background is critical to the dark matter searches in the PandaX-4T liquid xenon experiment. This paper studies the feature of neutron background in…
A search for solar axions and anomalous neutrino magnetic moment with the complete PandaX-II data
Xiaopeng Zhou, Xinning Zeng, Xuyang Ning +63
We report a search for new physics signals using the low energy electron recoil events in the complete data set from PandaX-II, in light of the recent event excess reported by XENO…
Mamoda2.5: Enhancing Unified Multimodal Model with DiT-MoE
Yangming Shi, Shixiang Zhu, Tao Shen +14
We present Mamoda2.5, a unified AR-Diffusion framework that seamlessly integrates multimodal understanding and generation within a single architecture. To efficiently enhance the m…
Fast Global Convergence of Natural Policy Gradient Methods with Entropy Regularization
Shicong Cen, Chen Cheng, Yuxin Chen +2
Natural policy gradient (NPG) methods are among the most widely used policy optimization algorithms in contemporary reinforcement learning. This class of methods is often applied i…
Reweight-annealing method for evaluating the partition function via quantum Monte Carlo calculations
Yi-Ming Ding, Jun-Song Sun, Nvsen Ma +3
Efficient and accurate algorithm for partition function, free energy and thermal entropy calculations is of great significance in statistical physics and quantum many-body physics.…
ODEs learn to walk: ODE-Net based data-driven modeling for crowd dynamics
Chen Cheng, Jinglai Li
Predicting the behaviors of pedestrian crowds is of critical importance for a variety of real-world problems. Data driven modeling, which aims to learn the mathematical models from…
Enhancing quantum entropy in vacuum-based quantum random number generator
Xiaomin Guo, Ripeng Liu, Pu Li +3
Information-theoretically provable unique true random numbers, which cannot be correlated or controlled by an attacker, can be generated based on quantum measurement of vacuum stat…
Some Robustness Properties of Label Cleaning
Chen Cheng, John Duchi
We demonstrate that learning procedures that rely on aggregated labels, e.g., label information distilled from noisy responses, enjoy robustness properties impossible without data…
Multi-Value Alignment for LLMs via Value Decorrelation and Extrapolation
Hefei Xu, Le Wu, Chen Cheng +1
With the rapid advancement of large language models (LLMs), aligning them with human values for safety and ethics has become a critical challenge. This problem is especially challe…
A Search for Light Fermionic Dark Matter Absorption on Electrons in PandaX-4T
Dan Zhang, Abdusalam Abdukerim, Zihao Bo +89
We report a search on a sub-MeV fermionic dark matter absorbed by electrons with an outgoing active neutrino using the 0.63 tonne-year exposure collected by PandaX-4T liquid xenon…
Scaling of energy and power in a large quantum battery-charger model
Lei Gao, Chen Cheng, Wen-Bin He +3
We investigate a multi-qubit quantum battery-charger model, focusing on its potential emulation on a superconducting qubit chip. Using a large-spin representation, we first obtain…
Waveform Simulation in PandaX-4T
Jiafu Li, Abdusalam Abdukerim, Chen Cheng +88
Signal reconstruction through software processing is a crucial component of the background and signal models in the PandaX-4T experiment, which is a multi-tonne dark matter direct…
ALens: An Adaptive Domain-Oriented Abstract Writing Training Tool for Novice Researchers
Chen Cheng, Ziang Li, Zhenhui Peng +1
The significance of novice researchers acquiring proficiency in writing abstracts has been extensively documented in the field of higher education, where they often encounter chall…
Neural SDEs as a Unified Approach to Continuous-Domain Sequence Modeling
Macheng Shen, Chen Cheng
Inspired by the ubiquitous use of differential equations to model continuous dynamics across diverse scientific and engineering domains, we propose a novel and intuitive approach t…
Many-body delocalization with random vector potentials
Chen Cheng, Rubem Mondaini
We study the ergodic properties of excited states in a model of interacting fermions in quasi-one-dimensional chains subjected to a random vector potential. In the noninteracting l…
Search for Light Dark Matter-Electron Scatterings in the PandaX-II Experiment
Chen Cheng, Pengwei Xie, Abdusalam Abdukerim +67
We report constraints on light dark matter through its interactions with shell electrons in the PandaX-II liquid xenon detector with a total 46.9 tonneday exposure. To effec…
Signal Response Model in PandaX-4T
Yunyang Luo, Zihao Bo, Shibo Zhang +88
PandaX-4T experiment is a deep-underground dark matter direct search experiment that employs a dual-phase time projection chamber with a sensitive volume containing 3.7 tonne of li…
MCDIP-ADMM: Overcoming Overfitting in DIP-based CT reconstruction
Chen Cheng, Qingping Zhou
This paper investigates the application of unsupervised learning methods for computed tomography (CT) reconstruction. To motivate our work, we review several existing priors, namel…
Constraints on the axial-vector and pseudo-scalar mediated WIMP-nucleus interactions from PandaX-4T experiment
Zhou Huang, Chencheng Han, Abdusalam Abdukerim +88
We present the constraints on the axial-vector and pseudo-scalar mediated WIMP-nucleus interactions from the PandaX-4T experiment, using the data set corresponding to a total expos…
Quantum highway: Observation of minimal and maximal speed limits for few and many-body states
Zitian Zhu, Lei Gao, Zehang Bao +30
Tracking the time evolution of a quantum state allows one to verify the thermalization rate or the propagation speed of correlations in generic quantum systems. Inspired by the ene…
Defining a universal sign to strictly probe a phase transition
Nvsen Ma, Jun-Song Sun, Gaopei Pan +2
The mystery of the infamous sign problem in quantum Monte Carlo simulations mightily restricts applications of the method in fermionic and frustrated systems. A recent work [Scienc…
Measurement of Solar Neutrino Flux using Electron Recoil Data from PandaX-4T Commissioning Run
PandaX Collaboration, Xiaoying Lu, Abdusalam Abdukerim +89
The proton-proton () fusion chain dominates the neutrino production from the Sun. The uncertainty of the predicted neutrino flux is at the sub-percent level, whereas that…
Collaboratively Learning Linear Models with Structured Missing Data
Chen Cheng, Gary Cheng, John Duchi
We study the problem of collaboratively learning least squares estimates for agents. Each agent observes a different subset of the features$\unicode{x2013}$e.g., containing dat…
How many labelers do you have? A closer look at gold-standard labels
Chen Cheng, Hilal Asi, John Duchi
The construction of most supervised learning datasets revolves around collecting multiple labels for each instance, then aggregating the labels to form a type of "gold-standard". W…
Concentration Inequalities for Exchangeable Tensors and Matrix-valued Data
Chen Cheng, Rina Foygel Barber
We study concentration inequalities for structured weighted sums of random data, including (i) tensor inner products and (ii) sequential matrix sums. We are interested in tail boun…
Observation of energy resolved many-body localization
Qiujiang Guo, Chen Cheng, Zheng-Hang Sun +10
Many-body localization (MBL) describes a quantum phase where an isolated interacting system subject to sufficient disorder displays non-ergodic behavior, evading thermal equilibriu…
Kinetics of orbital ordering in cooperative Jahn-Teller models: Machine-learning enabled large-scale simulations
Supriyo Ghosh, Sheng Zhang, Chen Cheng +1
We present a scalable machine learning (ML) force-field model for the adiabatic dynamics of cooperative Jahn-Teller (JT) systems. Large scale dynamical simulations of the JT model…
Enhanced coarsening of charge density waves induced by electron correlation: Machine-learning enabled large-scale dynamical simulations
Yang Yang, Chen Cheng, Yunhao Fan +1
The phase ordering kinetics of emergent orders in correlated electron systems is a fundamental topic in non-equilibrium physics, yet it remains largely unexplored. The intricate in…
Optimal Stopping for Sequential Bayesian Experimental Design
Chen Cheng, Xun Huan
Sequential Bayesian experimental design is often formulated as a fixed-horizon policy optimization problem, in which the number of experiments is specified before data collection b…
Singlet pairing and superconductivity in t-J ladders with Mott insulating stripes
Chen Cheng, Rubem Mondaini, Marcos Rigol
Pairing in superconductors occurs in a variety of channels and can be produced by various mechanisms. Here, we show that, in the presence of strong correlations, a novel singlet-pa…
A First Search for Solar B Neutrino in the PandaX-4T Experiment using Neutrino-Nucleus Coherent Scattering
Wenbo Ma, Abdusalam Abdukerim, Chen Cheng +88
A search for interactions from solar B neutrinos elastically scattering off xenon nuclei using PandaX-4T commissioning data is reported. The energy threshold of this search is…
Precise Xe Double Beta Decay Measurement in PandaX-4T with Implications on the Nuclear Matrix Elements and Majorons
PandaX Collaboration, Zhe Yuan, Zihao Bo +111
The continuous spectrum of double beta decay () provides a sensitive probe to test the predictions of the standard model and to search for signatures of new physics beyond it…
Search for Light Dark Matter with 259-day data in PandaX-4T
Minzhen Zhang, Zihao Bo, Wei Chen +108
We present a search for light dark matter particles through their interactions with atomic electrons and nucleons, utilizing PandaX-4T data with an effective exposure of 1.04 tonne…
GPS-Synchronized Monitoring of Core-collapse Supernova Bursts with PandaX-4T via Coherent Elastic Neutrino Nuclear Scattering
Binyu Pang, Zihao Bo, Wei Chen +108
The landmark detection of neutrinos from SN1987A marked the dawn of neutrino astrophysics. The neutrino burst provided essential insights into fundamental properties of neutrinos,…
Parallel real-time quantum random number generator
Xiaomin Guo, Chen Cheng, Mingchuan Wu +3
Quantum random number generation exploits inherent randomness of quantum mechanical processes and measurements. Real-time generation rate of quantum random numbers is usually limit…
CUCL: Codebook for Unsupervised Continual Learning
Chen Cheng, Jingkuan Song, Xiaosu Zhu +3
The focus of this study is on Unsupervised Continual Learning (UCL), as it presents an alternative to Supervised Continual Learning which needs high-quality manual labeled data. Th…
Horizontal Position Reconstruction in PandaX-II
Dan Zhang, Andi Tan, Abdusalam Abdukerim +69
Dual-phase noble-gas time projection chambers (TPCs) have improved the sensitivities for dark matter direct search in past decades. The capability of TPCs to reconstruct 3-D vertex…
Search for Cosmic-ray Boosted Sub-MeV Dark-Matter-Electron Scattering in PandaX-4T
Xiaofeng Shang, Abdusalam Abdukerim, Zihao Bo +89
We report the first search for the elastic scatterings between cosmic-ray boosted sub-MeV dark matter and electrons in the PandaX-4T liquid xenon experiment. Sub-MeV dark matter pa…
Search for Dark-Matter-Nucleon Interactions with a Dark Mediator in PandaX-4T
Di Huang, Abdusalam Abdukerim, Zihao Bo +92
We report results of a search for dark-matter-nucleon interactions via a dark mediator using optimized low-energy data from the PandaX-4T liquid xenon experiment. With the ionizati…
Magnetization jump in one dimensional model with anisotropic exchange
Bin-Bin Mao, Chen Cheng, Fu-Zhou Chen +1
We investigate the adiabatic magnetization process of the one-dimensional model with XXZ anisotropy in an external magnetic field by using density matrix renormal…
MammothModa2: A Unified AR-Diffusion Framework for Multimodal Understanding and Generation
Tao Shen, Xin Wan, Taicai Chen +10
Unified multimodal models aim to integrate understanding and generation within a single framework, yet bridging the gap between discrete semantic reasoning and high-fidelity visual…
State evolution beyond first-order methods I: Rigorous predictions and finite-sample guarantees
Michael Celentano, Chen Cheng, Ashwin Pananjady +1
We develop a toolbox for exact analysis of iterative algorithms on a class of high-dimensional nonconvex optimization problems with random data. While prior work has shown that low…
Dimension free ridge regression
Chen Cheng, Andrea Montanari
Random matrix theory has become a widely useful tool in high-dimensional statistics and theoretical machine learning. However, random matrix theory is largely focused on the propor…
Enhanced superconductivity and various edge modes in modulated - chains
Yong-Feng Yang, Jing Chen, Chen Cheng +1
We numerically investigate the ground state of the extended - Hamiltonian with periodic local modulations in one dimension by using the density-matrix renormalization group m…
A Catalogue of Solar-Like Oscillators Observed by TESS in 120-second and 20-second Cadence
Emily Hatt, Martin B. Nielsen, William J. Chaplin +12
The Transiting Exoplanet Survey Satellite (TESS) mission has provided photometric light curves for stars across nearly the entire sky. This allows for the application of asteroseis…
Many-body critical phase: extended and nonthermal
Yucheng Wang, Chen Cheng, Xiong-jun Liu +1
The transition between ergodic phase and many-body localization (MBL) phase lies at the heart in understanding quantum thermalization of many-body systems. Here we predict a many-b…
Search for light dark matter from atmosphere in PandaX-4T
Xuyang Ning, Abdusalam Abdukerim, Zihao Bo +92
We report a search for light dark matter produced through the cascading decay of mesons, which are created as a result of inelastic collisions between cosmic rays and Earth's…
Low Radioactive Material Screening and Background Control for the PandaX-4T Experiment
Zhicheng Qian, Lin Si, Abdusalam Abdukerim +76
PandaX-4T is a ton-scale dark matter direct detection experiment using a dual-phase TPC technique at the China Jinping Underground Laboratory. Various ultra-low background technolo…
Stark many-body localization on a superconducting quantum processor
Qiujiang Guo, Chen Cheng, Hekang Li +9
Quantum emulators, owing to their large degree of tunability and control, allow the observation of fine aspects of closed quantum many-body systems, as either the regime where ther…
Qwen3Guard Technical Report
Haiquan Zhao, Chenhan Yuan, Fei Huang +40
As large language models (LLMs) become more capable and widely used, ensuring the safety of their outputs is increasingly critical. Existing guardrail models, though useful in stat…
Tomographic beta-gamma spectroscopy of nuclear beta decay
PandaX Collaboration, Zhe Yuan, Zihao Bo +111
Nuclear decay, a sensitive probe of nuclear structure and weak interactions, has become a precision test bed for physics beyond the Standard Model, driven by recent advances i…
Study of background from accidental coincidence signals in the PandaX-II experiment
II Collaboration, Abdusalam Abdukerim, Wei Chen +63
The PandaX-II experiment employed a 580kg liquid xenon detector to search for the interactions between dark matter particles and the target xenon atoms. The accidental coincidences…
ModelScope-Agent: Building Your Customizable Agent System with Open-source Large Language Models
Chenliang Li, Hehong Chen, Ming Yan +11
Large language models (LLMs) have recently demonstrated remarkable capabilities to comprehend human intentions, engage in reasoning, and design planning-like behavior. To further u…
Multi-dimensional vibration sensing and simultaneous self-homodyne optical transmission of single wavelength net 5.36 Tb/s signal using telecom 7-core fiber
Jianwei Tang, Xueyang Li, Bang Yang +7
We present a high-capacity self-homodyne optical transmission system that enables simultaneously multidimensional vibration sensing based on a weakly-coupled 7-core fiber. To our k…
Observation of many-body Fock space dynamics in two dimensions
Yunyan Yao, Liang Xiang, Zexian Guo +25
Quantum many-body simulation provides a straightforward way to understand fundamental physics and connect with quantum information applications. However, suffering from exponential…
The production of neutral resonance with hidden beauty from scattering
Chen Cheng, Xiao-Yun Wang
We investigate the discovery potential of the predicted neutral hidden beauty resonance through scattering within an effective Lagrangian approach. Two reacti…
Probing phase transitions with correlations in configuration space
Wen-Yu Su, Yu-Jing Liu, Nvsen Ma +1
In principle, the probability of configurations, determined by the system's partition function or wave function, encapsulates essential information about phases and phase transitio…
Light yield and field dependence measurement in PandaX-II dual-phase xenon detector
Zhou Huang, Abdusalam Abdukerim, Zihao Bo +76
The dual-phase xenon time projection chamber (TPC) is one of the most sensitive detector technology for dark matter direct search, where the energy deposition of incoming particle…
Precise Measurement of Po Half-life with Exact Parent-daughter Pairing in PandaX-4T
PandaX Collaboration, Chenxiang Li, Zihao Bo +108
We report a precise measurement of half-life using the PandaX-4T liquid xenon time projection chamber (TPC). , emanating from a calibr…
Deep learning based on mixed-variable physics informed neural network for solving fluid dynamics without simulation data
Guang-Tao Zhang, Chen Cheng, Shu-dong Liu +2
Deep learning method has attracted tremendous attention to handle fluid dynamics in recent years. However, the deep learning method requires much data to guarantee the generalizati…
Deep learning based on PINN for solving 2 D0F vortex induced vibration of cylinder with high Reynolds number
Chen Cheng, Peng-Fei Xu, Yong-Zheng Li +1
Vortex-induced vibration (VIV) exists widely in natural and industrial fields. The main approaches for solving VIV problems are numerical simulations and experimental methods. Howe…
Geometry, Computation, and Optimality in Stochastic Optimization
Chen Cheng, Daniel Levy, John C. Duchi
We study computational and statistical consequences of problem geometry in stochastic and online optimization. By focusing on constraint set and gradient geometry, we characterize…
Parameter estimation from aggregate observations: A Wasserstein distance based sequential Monte Carlo sampler
Chen Cheng, Linjie Wen, Jinglai Li
In this work we study systems consisting of a group of moving particles. In such systems, often some important parameters are unknown and have to be estimated from observed data. S…
BambooMC -- A Geant4-based simulation program for the PandaX experiments
Xun Chen, Chen Cheng, Mengting Fu +11
The purpose of the PandaX experiments is to search for the possible events resulted from dark matter particles, neutrinoless double beta decay or other rare processes with xenon de…
HyBDM: Multi-Scale Hybrid Experts for Time Series Forecasting with Bidirectional Dependency Modeling
Wenqiang Ma, Chen Cheng, Xue Cheng +1
Time series forecasting (TSF) is vital to many applications, yet existing models often struggle to capture the heterogeneous long-range global patterns and short-range local variat…
First search for the absorption of fermionic dark matter with the PandaX-4T experiment
Linhui Gu, Abdusalam Abdukerim, Zihao Bo +86
Compared with the signature of dark matter elastic scattering off nuclei, the absorption of fermionic dark matter by nuclei opens up a new searching channel for light dark matter w…
Precise Photon Correlation Measurement of a Chaotic Laser
Xiaomin Guo, Chen Cheng, Tong Liu +2
The second order photon correlation g^(2)(tau) of a chaotic optical-feedback semiconductor laser is precisely measured using a Hanbury Brown-Twiss interferometer. The accurate g^(2…
Giant Magnetoresistance in Hubbard Chains
Jian Li, Chen Cheng, Thereza Paiva +2
We use numerically unbiased methods to show that the one-dimensional Hubbard model with periodically distributed on-site interactions already contains the minimal ingredients to di…
Field-Selected Topological Buffering in a Disordered Skyrmion Crystal
Wenyu Su, Nvsen Ma, Chen Cheng +1
The paper uses large‑scale simulations to show that a magnetic field can separate the loss of crystalline order from the loss of topological charge in disordered skyrmion crystals,…
Qwen-Image-2.0 Technical Report
Bing Zhao, Chenfei Wu, Deqing Li +72
We present Qwen-Image-2.0, an omni-capable image generation foundation model that unifies high-fidelity generation and precise image editing within a single framework. Despite rece…
Internal Calibration of the PandaX-II Detector with Radon Gaseous Sources
Wenbo Ma, Abdusalam Abdukerim, Zihao Bo +65
We have developed a low-energy electron recoil (ER) calibration method with Rn for the PandaX-II detector. Rn, emanated from natural thorium compounds, was fed into…
Exploring the Robustness of In-Context Learning with Noisy Labels
Chen Cheng, Xinzhi Yu, Haodong Wen +4
Recently, the mysterious In-Context Learning (ICL) ability exhibited by Transformer architectures, especially in large language models (LLMs), has sparked significant research inte…
Detecting Neutrinos from Supernova Bursts in PandaX-4T
Binyu Pang, Abdusalam Abdukerim, Zihao Bo +93
Neutrinos from core-collapse supernovae are essential for the understanding of neutrino physics and stellar evolution. The dual-phase xenon dark matter detectors can provide a way…
Dark Matter Search Results from the PandaX-4T Commissioning Run
Yue Meng, Zhou Wang, Yi Tao +76
We report the first dark matter search results using the commissioning data from PandaX-4T. Using a time projection chamber with 3.7-tonne of liquid xenon target and an exposure of…
Real-Time Mask Detection Based on SSD-MobileNetV2
Chen Cheng
After the outbreak of COVID-19, mask detection, as the most convenient and effective means of prevention, plays a crucial role in epidemic prevention and control. An excellent auto…
Ordering leads to multiple fast tracks in simulated collective escape of human crowds
Chen Cheng, Jinglai Li, Zhenwei Yao
Elucidating emergent regularities in intriguing crowd dynamics is a fundamental scientific problem arising in multiple fields. In this work, based on the social force model, we sim…
Disorder in interacting quasi-one-dimensional systems: flat and dispersive bands
Mi-Ji Liang, Yong-Feng Yang, Chen Cheng +1
We investigate the superconductor-insulator transition (SIT) in disordered quasi-one dimensional systems using the density-matrix renormalization group method. Focusing on the case…
Memorize to Generalize: on the Necessity of Interpolation in High Dimensional Linear Regression
Chen Cheng, John Duchi, Rohith Kuditipudi
We examine the necessity of interpolation in overparameterized models, that is, when achieving optimal predictive risk in machine learning problems requires (nearly) interpolating…
On the criticality of the configuration-space statistical geometry
Yu-Jing Liu, Wen-Yu Su, Yong-Feng Yang +2
While phases and phase transitions are conventionally described by local order parameters in real space, we present a unified framework characterizing the phase transition through…
Searching for Two-Neutrino and Neutrinoless Double Beta Decay of Xe with the PandaX-4T Experiment
PandaX Collaboration, Xiyu Yan, Zhaokan Cheng +94
Xe is a candidate isotope for neutrinoless double beta decay~() search. In addition, the two-neutrino case () allowed by the Standard Model of particle ph…
Results of Dark Matter Search using the Full PandaX-II Exposure
Qiuhong Wang, Abdusalam Abdukerim, Wei Chen +62
We report the dark matter search results obtained using the full 132 tonday exposure of the PandaX-II experiment, including all data from March 2016 to August 2018. No signi…
Exotic phase separation in one-dimensional hard-core boson system with two- and three-body interactions
Chen Cheng, Bin-Bin Mao, Fu-Zhou Chen +1
We investigate the ground state phase diagram of hard-core boson system with repulsive two-body and attractive three-body interactions in one-dimensional optic lattice. When these…
Degree-Weighted Social Learning
Chen Cheng, Xiao Han, Xin Tong +2
We study social learning in which agents weight neighbors' opinions differently based on their degrees, capturing situations in which agents place more trust in well-connected indi…