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Mathematics Preprint PDF DOI

On Global-in-time Solutions of Incompressible MHD Equations with Small Alfv\'en Numbers

Fei Jiang, Xiao Ren, Yi Zhou · 2026

In 1965 Kraichnan pointed out that a sufficiently strong background magnetic field, i.e. the case of small Alfv\'en number, will reduce the nonlinear interaction and inhibit the formation of strong gr…

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AI & Data Science Preprint PDF DOI

Time, Causality, and Observability Failures in Distributed AI Inference Systems

Ankur Sharma, Deep Shah, David Lariviere, Hesham ElBakoury · 2026

Distributed AI inference pipelines rely heavily on timestamp-based observability to understand system behavior. This work demonstrates that even small clock skew between nodes can cause observability …

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Physics Preprint PDF DOI

Optimising Quantum Error Correction Using Morphing Circuits

Mackenzie H. Shaw, Barbara M. Terhal · 2026

Quantum error correction (QEC) codes are traditionally defined and searched for without specifying the manner in which its syndrome extraction circuits are executed using elementary gates and measurem…

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Physics Preprint PDF DOI

Open-System Adiabatic Quantum Search under Dephasing

Afaf El Kalai, Peter J. Eder, Christian B. Mendl · 2026

Adiabatic quantum algorithms must evolve slowly enough to suppress non-adiabatic transitions while remaining fast enough to be practical. In open systems, this trade-off is reshaped by decoherence. Fo…

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Computer Science Preprint PDF DOI

Where Do Your Citations Come From? Citation-Constellation: A Free, Open-Source, No-Code, and Auditable Tool for Citation Network Decomposition with Complementary BARON and HEROCON Scores

Mahbub Ul Alam · 2026

Standard citation metrics treat all citations as equal, obscuring the social and structural pathways through which scholarly influence propagates. I introduce Citation-Constellation, a freely availabl…

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Physics Preprint PDF DOI

Dark energy and accelerating cosmological evolution in a Universe with a Weylian boundary

Tiberiu Harko, Shahab Shahidi · 2026

We investigate the influence of boundary terms in gravitational field theories, by considering that in the Einstein-Hilbert action the boundary can be described by a non-metric Weyl-type geometry. The…

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Physics Preprint PDF DOI

A Scalable Distributed Quantum Optimization Framework via Factor Graph Paradigm

Yuwen Huang, Xiaojun Lin, Bin Luo, John C.S. Lui · 2026

Distributed quantum computing (DQC) connects many small quantum processors into a single logical machine, offering a practical route to scalable quantum computation. However, most existing DQC paradig…

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AI & Data Science Preprint PDF DOI

Composite Wavelet Matrix-Based Transforms and Applications

Radhika Kulkarni, Brani Vidakovic · 2026

Orthogonal wavelet transforms are a cornerstone of modern signal and image denoising because they combine multiscale representation, energy preservation, and perfect reconstruction. In this paper, we …

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Physics Preprint PDF DOI

Shortcuts to Adiabaticity via Adaptive Quantum Zeno Measurements

Adolfo del Campo · 2026

We consider the quantum Zeno dynamics arising from monitoring a time-dependent projector. Starting from a stroboscopic measurement protocol, it is shown that the effective Hamiltonian for Zeno dynamic…

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Physics Preprint PDF DOI

Observational Constraints and Geometric Diagnostics of Barboza-Alcaniz and Logarithmic Dark Energy Parametrizations

Archana Dixit, Saurabh Verma, Anirudh Pradhan, M. S. Barak · 2026

This study investigates and compares two prominent two-dimensional dark energy (DE) parameterizations: Barboza-Alcaniz (BA) and Logarithmic forms by comparing them with a comprehensive set of observat…

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Mathematics Preprint PDF DOI

Relative entropy and slightly compressible Navier-Stokes dynamics of the Boltzmann equation

Yuhan Chen, Ning Jiang · 2026

This paper shows that, in the formal level, the convergence of solutions of Boltzmann equation to solutions of the compressible Navier-Stokes system with small Mach number over the three-dimensional p…

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Engineering Preprint PDF DOI

Energy Management Strategies for Electric Aircraft Charging Leveraging Active Landside Vehicle-to-Grid

Finn Vehlhaber, Mauro Salazar · 2026

The deployment of medium-range battery electric aircraft is a promising pathway to improve the environmental footprint of air mobility. Yet such a deployment would be accompanied by significant electr…

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Mathematics Preprint PDF DOI

Representations of the modular group into the isometries of SL(3, R)/SO(3)

Joan Porti · 2026

We describe a connected component of the space of conjugacy classes of representations of the modular group $\mathrm{PSL}_2(\mathbb{Z})$ into the isometry group of the symmetric space $\mathrm{SL}_3(\…

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Physics Preprint PDF DOI

Fundamental Properties of Novae in M31

Allen W. Shafter, Kamil Hornoch · 2026

The peak luminosities and rates of decline for a large sample of novae recently published by Clark et al. have been analyzed using the Yaron et al. nova models to estimate fundamental properties of th…

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History & Literature Preprint PDF DOI

Remarkable Dates and Place: One Hundred Years Ago

Sergei K. Suslov · 2026

Exactly a century ago, wave quantum mechanics was born in Arosa, Switzerland. Erwin Schr\"{o}dinger was vacationing in this classic Swiss Alps town at Christmas 1925 when he made his breakthrough disc…

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Physics Preprint PDF DOI

The Impact of the MAST Data Archive

Richard A. Shaw, Jenny L. Novacescu, Sarah Weissman, Travis A. Berger, Clara E. Brasseur, Jeff Chamblee, Brian Cherinka, Zachary R. Claytor, Theresa Dower, Chinwe Edeani, Scott W. Fleming, Jonathan R. Hargis, Julie Imig, Tim Januario, Karen Levay, Tim Kimball, Jenn Kotler, Hannah M. Lewis, Steve Lubow, Adrian Lucy, Brian McLean, Sunita G. Malla, Jacob Matuskey, Sophie J. Miller, Susan E. Mullally, Claire E. Murray, J. E. G. Peek, Carlita Phillip, Marc Rafelski, David R. Rodriguez, Gregory F. Snyder, Achu J. Usha, Richard L. White, Jinmi Yoon · 2025

The Barbara A. Mikulski Archive for Space Telescopes (MAST) hosts science-ready data products from over twenty NASA missions, plus community-contributed data collections, and other select surveys. The…

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Mathematics Preprint PDF DOI

Characterizations of Almost Ricci Bourguignon Solitons

Mohammad Aqib, Hemangi Madhusudan Shah, Dhriti Sundar Patra · 2025

In this paper, we revisit the study of almost Ricci-Bourguignon solitons by clarifying their position in the broader context of Einstein-type metrics. Motivated by known rigidity results for compact a…

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Sociology & Anthropology Preprint PDF DOI

Comparison between Idealized and Realized Accessibility Measures in GIScience

Yuyan Che, Trisalyn A. Nelson, Somayeh Dodge, Peter Kedron · 2025

Measures of access, defined as the ease with which people can reach opportunities or services, are often based on proximity. Proximity measures of access are often unrealistic or idealized, ignoring m…

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Physics Preprint PDF DOI

Robust evidence for dynamical dark energy in light of DESI DR2 and joint ACT, SPT, and Planck data

Tian-Nuo Li, Guo-Hong Du, Sheng-Han Zhou, Yun-He Li, Jing-Fei Zhang, Xin Zhang · 2025

Recent baryon acoustic oscillation (BAO) measurements released by DESI, when combined with cosmic microwave background (CMB) data and type Ia supernova (SN) data, suggest a significant preference for …

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Physics Preprint PDF DOI

Observational constraints on the product of dark energy chemical potential and number density in out-of-equilibrium models

J. M. Costa Netto, Javier E. Gonzalez, H. H. B. Silva · 2025

In this work, we impose observational limits on the product of dark energy chemical potential, $\mu$, and number density, $n$, at the present time in out-of-equilibrium models, considering that partic…

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