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Showing 10656 results for "firdevs ulus" in Physics · Preprint
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Orbital Data Centers: Spacecraft Constraints and Economic Viability

Slava G. Turyshev · 2026

Orbital data centers are being evaluated as solar-powered compute constellations and relay-integrated processing platforms. Their feasibility is not set by orbital solar flux alone, but by simultaneou…

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Geodesically Complete Curvature-Bounce Inflation

Damien A. Easson · 2026

The early universe need not be described by an incomplete inflationary phase connected to a separate, more exotic prehistory. Recent results show that, within non-static FRW cosmology, only positive s…

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Dwarf Galaxies Hosting Extreme Star-Forming Regions and (Variable) AGNs at Radio Wavelengths

John-Michael Eberhard, Amy E. Reines · 2026

We present a detailed study of radio-detected dwarf galaxies (with stellar masses less than 3 billion solar masses) to characterize extreme star formation and search for (variable) radio AGNs. Our sam…

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Beyond Cloud-9: The case for discovering more HI-rich failed halos

Jorge Moreno, Coral Wheeler, Francisco J. Mercado, M. Katy Rodriguez Wimberly, Pratik J. Gandhi, Jenna Samuel, Robert Feldmann, James S. Bullock, Andrew Wetzel, Michael Boylan-Kolchin · 2026

HI-rich starless halos, should they exist, hold great promise for elucidating properties of dark matter halos. This Letter examines the properties of HI-rich failed halos at redshift zero across state…

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Physics Preprint PDF DOI

Finite-Window Centered Organization of Neighboring Poles

Yuye Wu, Hong-Bo Jin · 2026

Near-degenerate resonance poles arise widely in open-wave systems, including gravitational-wave ringdowns, when two neighboring modes have almost the same complex frequency. On a finite observation wi…

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Validity of DFT+U band gaps in all its known functional forms

Andrew C. Burgess, David D. O'Regan · 2026

The Density Functional Theory plus Hubbard $U$ (DFT+$U$) technique is one of the most widely used tools by condensed matter physicists and solid state chemists for the simulation of transition-metal a…

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Integrand Analysis, Leading Singularities and Canonical Bases beyond Polylogarithms

Felix Forner, Cesare Carlo Mella, Christoph Nega, Lorenzo Tancredi, Fabian J. Wagner · 2026

In this paper, we elaborate on the connection between leading singularities and canonical bases of Feynman integrals beyond polylogarithms. We start by discussing a notion of leading singularities in …

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A Physics Informed Bayesian Neural Network for the Neutron Star Equation of State

J.D. Baker, C.A. Bertulani, R.V. Lobato · 2026

We present a physics-informed Bayesian neural-network framework to infer neutron-star equations of state from theoretical priors and to propagate the associated uncertainties to stellar observables. T…

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Decoupling the AGN outflow and star-forming disk kinematics in the nuclear region of NGC 7582 with JWST NIRSpec and MIRI/MRS

Oscar Veenema, Niranjan Thatte, Dimitra Rigopoulou, Ismael Garcia-Bernete, Almudena Alonso-Herrero, Miguel Pereira-Santaella, Anelise Audibert, Enrica Bellocchi, Andrew J. Bunker, Steph Campbell, Francoise Combes, Ric I. Davies, Fergus R. Donnan, Santiago Garcia-Burillo, Omaira Gonzalez Martin, Laura Hermosa Munoz, Erin K. S. Hicks, Sebastian F. Hoenig, Alvaro Labiano, Nancy A. Levenson, Chris Packham, Cristina Ramos Almeida, Claudio Ricci, Rogemar A. Riffel, David Rosario, Taro Shimizu, Lulu Zhang · 2026

We present a detailed study of the inner regions of NGC~7582, a nearby Seyfert~2 galaxy, from the Galaxy Activity, Torus and Outflow Survey (GATOS). The galaxy hosts a circumnuclear star-forming disk …

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Accidental Peccei-Quinn Symmetry from Chiral Gauge Symmetry and Mirror QCD

Hajime Fukuda, Keisuke Harigaya · 2026

We present a solution to the strong CP problem in which a simple chiral U(1) gauge symmetry gives rise to an accidental Peccei-Quinn symmetry that is both explicitly and spontaneously broken by mirror…

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Nucleon decays into one lepton plus two non-strange mesons

Wei-Qi Fan, Yi Liao, Xiao-Dong Ma · 2026

Nucleon decays into a lepton and two pseudoscalar mesons represent key channels for probing baryon number violation, complementing conventional two-body modes. In this Letter, we model-independently c…

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Probing the electron Yukawa coupling via resonant Higgs boson production at FCC-ee via $e^+e^- \to H \to WW^*$ in lepton-plus-jets final states

Apranik Fatehi, Reza Jafari Seyedabad, Amir Amiri, Kazem Azizi, David d'Enterria, Louis Portales, Michele Selvaggi · 2026

We report a detailed simulation study of the search for $s$-channel Higgs boson production in $e^+e^-$ collisions at a center-of-mass (c.m.) energy of $\sqrt{s}=125\,\mathrm{GeV}$ at the CERN Future C…

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Regularization of Divergent Power Sums via Fractional Extension of Differential Generators

Eric A. Galapon · 2026

We reconsider the problem of regularizing the divergent series $\sum_{n=1}^{\infty}n^{\alpha}$ for $\operatorname{Re}\alpha>-1$, and offer a regularization prescription that yields the Riemann zeta re…

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The parity-violating asymmetry including QED corrections in high-energy electron-nucleus collisions

Xavier Roca-Maza, D. H. Jakubassa-Amundsen · 2026

The parity-violating asymmetry, accounting for the vector and axial-vector vertex plus self-energy correction as well as for vacuum polarization, is calculated nonperturbatively by solving the corresp…

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Pairing mechanism and superconductivity in 1313 phase La$_3$Ni$_2$O$_7$

Cui-Qun Chen, Ming Zhang, Fan Yang, Dao-Xin Yao · 2026

Recently, the observation of superconductivity (SC) with $T_c$ $\approx$ 3.6 K in the pressurized 1313 La$_3$Ni$_2$O$_7$ has attracted considerable interest. Here, we systematically investigate the el…

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Scalable Photonic Neural Networks via Surrogate Scattering-Matrix Inverse Design

Azka Maula Iskandar Muda, Ugur Tegin · 2026

Inverse-designed nanophotonic media are a promising platform for compact optical neural networks, but training them end to end is expensive because each adjoint iteration couples the full-wave solver …

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Deep VLBI constraints on compact radio cores in four ultraluminous X-ray sources

Ailing Wang, Hua Feng, Tao An, Yijia Zhang, Jun Yang, Roberto Soria, Lian Tao, Thomas Russell, Jing Guo, Liang Zhang · 2026

We present high-sensitivity Very Long Baseline Interferometry (VLBI) observations of four ultraluminous X-ray sources (ULXs): Holmberg II X-1, IC 342 X-1, NGC 6946 X-1, and NGC 925 X-1. No compact emi…

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Shell effects and the neutron emission within the multi-dimensional Langevin model for fission

F.A. Ivanyuk, S.V. Radionov, C. Ishizuka, S. Chiba · 2026

We solve the Langevin equations for the time evolution of parameters that describe the shape of fissioning system. On each integration step, we calculate the probability of neutron emission and estima…

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The swept-back multipolar magnetic field of neutron stars: Application to NICER MSP J0030+0451

Anu Kundu, Constantinos Kalapotharakos, Zorawar Wadiasingh, Greg Olmschenk, Wendy F. Wallace, Alice K. Harding, Christo Venter, Demosthenes Kazanas · 2026

NICER observations of millisecond pulsars (MSPs) suggest that non-dipolar magnetic fields are required to explain their surface X-ray hotspots. C. Kalapotharakos et al. (2021) modeled the NICER light …

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Machine Learning Supports Existence of Previously Unrecognized Transient Astronomical Phenomena in Historical Observatory Images

Stephen Bruehl, Brian Doherty, Alina Streblyanska, Beatriz Villarroel · 2026

Transient, star-like point sources that appear and vanish over short timescales are described in astronomical images prior to launch of Sputnik. We have reported that transient numbers diminish signif…

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