26,649,621 dokumen ditemukan
(Menampilkan 1521-1540 | Halaman 77 dari 1332482)
Urutkan
#
Judul
Penulis
Tahun
Akses
arXiv Preprints
Choosing suitable noise models for nanohertz gravitational-wave astrophysics
Accurately estimating the parameters of the nanohertz gravitational-wave background is essential for understanding its origin. The background is typically modeled with a power-law spectrum, parametrized with an amplitude $A$, which describes its inte...
physics:gr-qcphysics:astro-ph:HE
arXiv Preprints
Demystifying integrable QFTs in AdS: No-go theorems for higher-spin charges
Higher-spin conserved currents and charges feature prominently in integrable 2d QFTs in flat space. Motivated by the question of integrable field theories in AdS space, we consider the consequences of higher-spin currents for QFTs in AdS$_2$, and fin...
physics:hep-th
arXiv Preprints
Streaming Attention Approximation via Discrepancy Theory
Large language models (LLMs) have achieved impressive success, but their high memory requirements present challenges for long-context token generation. In this paper we study the streaming complexity of attention approximation, a key computational pr...
cs:cs:LGcs:cs:AIcs:cs:DS
arXiv Preprints
Mathematical modeling and simulation of coupled aqueous humor flow and temperature distribution in a realistic 3D human eye geometry
We present a comprehensive computational model to simulate the coupled dynamics of aqueous humor flow and heat transfer in the human eye. To manage the complexity of the model, we make significant efforts in meshing and efficient solution of the disc...
math:math:AP
arXiv Preprints
Space-Efficient Quantum Error Reduction without log Factors
Given an algorithm that outputs the correct answer with bounded error, say $1/3$, it is sometimes desirable to reduce this error to some arbitrarily small $\varepsilon$ -- e.g., if one wants to call the algorithm many times as a subroutine. The usual...
physics:quant-phcs:cs:DS
arXiv Preprints
EmbBERT: Attention Under 2 MB Memory
Transformer architectures based on the attention mechanism have revolutionized natural language processing (NLP), driving major breakthroughs across virtually every NLP task. However, their substantial memory and computational requirements still hind...
cs:cs:CLcs:cs:ARcs:cs:DCcs:cs:LG
arXiv Preprints
On $\mathcal{F}$-multicolor Turán number of hypergraph graphs
The Ruzsa-Szemerédi $(6,3)$-problem can be equivalently stated as determining the maximum number of edge-disjoint triangles on $n$ vertices such that no triangle is formed by edges from three distinct triangle-copies. Gowers and Janzer extended this...
math:math:CO
arXiv Preprints
Stochastic Schrödinger equation for a homodyne measurement setup of strongly correlated systems
Starting from an experimentally feasible atomic setup, we derive a stochastic Schrödinger equation that captures the homodyne detection record of a strongly interacting system. Applying the rotating wave approximation to the linear atom-light coupli...
physics:quant-ph
arXiv Preprints
Cross-Comparison of Sampling Algorithms for Pulse Profile Modeling of PSR J0740+6620
In the last few years, NICER data has enabled mass and radius inferences for various pulsars, and thus shed light on the equation of state for dense nuclear matter. This is achieved through a technique called pulse profile modeling. The importance of...
physics:astro-ph:HEphysics:nucl-th
arXiv Preprints
Isometries of spacetimes without observer horizons
We study the isometry groups of (non-compact) Lorentzian manifolds with well-behaved causal structure, aka causal spacetimes satisfying the ``no observer horizons'' condition. Our main result is that the group of time orientation-preserving...
math:math:DGphysics:gr-qcphysics:math-phmath:math:MP
arXiv Preprints
Digitized counterdiabatic quantum critical dynamics
We experimentally demonstrate that a digitized counterdiabatic quantum protocol reduces the number of topological defects created during a fast quench across a quantum phase transition. To show this, we perform quantum simulations of one- and two-dim...
physics:quant-ph
arXiv Preprints
Bounding the Error of Value Functions in Sobolev Norm Yields Bounds on Suboptimality of Controller Performance
Optimal feedback controllers for nonlinear systems can be derived by solving the Hamilton-Jacobi-Bellman (HJB) equation. However, because the HJB is a nonlinear partial differential equation, numerical methods typically provide only approximate solut...
math:math:OC
arXiv Preprints
Quantum Eigensolver for Non-Normal Matrices via Ground State Energy Estimation
Large-scale eigenvalue problems pose a significant challenge to classical computers. While there are efficient quantum algorithms for unitary or Hermitian matrices, eigenvalue problems for non-normal matrices remain open in quantum computing. In this...
physics:quant-ph
arXiv Preprints
Federated Learning for Data-Driven Feedforward Control: A Case Study on Vehicle Lateral Dynamics
In many control systems, tracking accuracy can be enhanced by combining (data-driven) feedforward (FF) control with feedback (FB) control. However, designing effective data-driven FF controllers typically requires large amounts of high-quality data a...
cs:cs:LGcs:cs:MA
arXiv Preprints
Training-free Adjustable Polynomial Graph Filtering for Ultra-fast Multimodal Recommendation
Multimodal recommender systems improve the performance of canonical recommender systems with no item features by utilizing diverse content types such as text, images, and videos, while alleviating inherent sparsity of user-item interactions and accel...
cs:cs:IRcs:cs:AIcs:cs:ITmath:math:ITcs:cs:LGcs:cs:SI
arXiv Preprints
Collaborative Evaluation of Deepfake Text with Deliberation-Enhancing Dialogue Systems
The proliferation of generative models has presented significant challenges in distinguishing authentic human-authored content from deepfake content. Collaborative human efforts, augmented by AI tools, present a promising solution. In this study, we ...
cs:cs:CLcs:cs:AIcs:cs:HC
arXiv Preprints
Small-Scale Testbeds for Connected and Automated Vehicles and Robot Swarms: Challenges and a Roadmap
This article proposes a roadmap to address the current challenges in small-scale testbeds for Connected and Automated Vehicles (CAVs) and robot swarms. The roadmap is a joint effort of participants in the workshop "1st Workshop on Small-Scale Te...
cs:cs:ROcs:cs:MA
arXiv Preprints
Imperfect detectors for adversarial tasks with applications to quantum key distribution
Security analyses in quantum key distribution (QKD) and other adversarial quantum tasks often assume perfect device models. However, real-world implementations often deviate from these models. Thus, it is important to develop security proofs that acc...
physics:quant-phphysics:physics:optics
arXiv Preprints
Dielectrocapillarity for exquisite control of fluids
Spatially varying electric fields are prevalent throughout nature, such as in nanoporous materials and biological membranes, and technology, e.g, patterned electrodes and van der Waals heterostructures. While uniform fields cause free ions to migrate...
physics:cond-mat:softphysics:cond-mat:mes-hallphysics:cond-mat:mtrl-sciphysics:cond-mat:stat-mechphysics:physics:chem-ph
arXiv Preprints
A Comparison of Calcium Sources for Ion-Trap Loading via Laser Ablation
Trapped-ion technology is a leading approach for scalable quantum computing. A key element of ion trapping is reliable loading of atomic sources into the trap. While thermal atomic ovens have traditionally been used for this purpose, laser ablation h...
physics:physics:atom-ph