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Physics Preprint PDF DOI

Observation of Vinen turbulence during far-from-equilibrium Bose-Einstein condensation

Sebastian J. Morris, Martin Gazo, Simon M. Fischer, Haoyu Zhang, Christopher J. Ho, Nigel R. Cooper, Christoph Eigen, Zoran Hadzibabic · 2026

Relaxation of far-from-equilibrium quantum fluids, intimately related to the emergence of long-range order, is theoretically associated with the decay of a turbulent isotropic tangle of vortex lines. …

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Physics Preprint PDF DOI

Pulsation-driven helium transport as a potential source of the Blazhko effect

Geza Kovacs · 2026

We present a highly simplified nonlinear hydrodynamical model to emulate the main observed features of amplitude modulation (commonly known as Blazhko effect) in RR Lyrae stars. The model is based on …

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Physics Preprint PDF DOI

Rydberg states of muonic helium in quantum electrodynamics

A. V. Eskin, A. P. Martynenko, F. A. Martynenko, D. K. Pometko · 2026

The variational method is used to study the energy levels of muonic helium $(\mu^{-} \, e^{-} \, He)$ with an electron in the ground state and a muon in an excited state with principal and orbital qua…

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Physics Preprint PDF DOI

Predicting massive helium-3 release from metal tritides using simple mechanical modeling

Berengere Evin, Dorian Gaboriau, Mathieu Segard, Sylvain Challet, Arnaud Fabre, Stephanie Thiebaut · 2026

This letter is presenting a simple but effective mechanism that explains why ,during tritium aging, metal tritides retain most helium-3 for years and then suddenly release massive amount. The mechanis…

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Physics Preprint PDF DOI

Coherent deeply virtual Compton scattering on helium-4 beyond leading power

Victor Martinez-Fernandez, B. Pire, P. Sznajder, J. Wagner · 2026

Coherent hard exclusive reactions on light nuclei provide access to their quark and gluon structure and enable three-dimensional tomography of these complex systems. We study deeply virtual Compton sc…

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Physics Preprint PDF DOI

The GMRT High-Resolution Southern Sky Survey for pulsars and transients -- VIII: Orbital Variability and the Evolution of a 1-Day He-WD Millisecond Pulsar J2101-4208

Ankita Ghosh, Bhaswati Bhattacharyya, David L. Kaplan, David A. Smith, Andrew Lyne, Jayanta Roy, Laila Vleeschower, Gabriella Agazie, Lankeswar Dey, Sangita Kumari, Ujjwal Panda · 2026

We present timing and orbital phase-resolved polarimetry of the millisecond pulsar (MSP) J2101$-$4802, having a spin period of 9.48~ms and dispersion measure (DM) $25.05\ \mathrm{pc\ cm^{-3}}$ discove…

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Earth & Environmental Sciences Preprint PDF DOI

ORCHARD: A General Planetary Evolution Code

Roberto Tejada Arevalo, Adam Burrows, Ankan Sur, Yubo Su · 2026

We present \texttt{ORCHARD}, a publicly available planetary evolution code based on the gas giant evolution code, \texttt{APPLE}, capable of modeling the evolution and structures of terrestrial, super…

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Physics Preprint PDF DOI

Electric-Field Control of Quantum Tunneling Regimes in Focused He-Ion-Beam-Irradiated Oxide Interfaces

Yu Chen, Maria D'Antuono, Robin Hutt, Cesar Magen, Edward Goldobin, Dieter Koelle, Reinhold Kleiner, Marco Salluzzo, Daniela Stornaiuolo · 2026

Helium focused ion beam irradiation enables the fabrication of tunnel field-effect transistors based on two-dimensional electron systems (2DESs) at an oxide interface.High resolution scanning transmis…

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AI & Data Science Preprint PDF DOI

Revealing Geography-Driven Signals in Zone-Level Claim Frequency Models: An Empirical Study using Environmental and Visual Predictors

Sherly Alfonso-Sanchez, Cristian Bravo, Kristina G. Stankova · 2026

Geographic context is often consider relevant to motor insurance risk, yet public actuarial datasets provide limited location identifiers, constraining how this information can be incorporated and eva…

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Physics Preprint PDF DOI

BV photometry of the ultracompact binary star GP Com

R. Zamanov, L. Dankova, M. Minev, D. Boneva, K. Yankova · 2026

We present optical B and V band photometry of GP Com - an ultracompact binary consisting of an accreting white dwarf and helium secondary component. Our data set contains 7.7 hours observations in V b…

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Physics Preprint PDF DOI

A New Pathway to Single Be Stars: Ejected Companions from Type Ia Supernovae

Yuchen Bao, Zhenwei Li, Hongwei Ge, Hailiang Chen, Dengkai Jiang, Xuefei Chen, Zhanwen Han · 2026

Be stars are rapid rotators generally produced by binary interactions. The single Be stars in the observations pose challenges to the Be star formation theory. In this paper, we propose a new pathway …

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Physics Preprint PDF DOI

Circumbinary Discs as the Origin of Circumstellar Material around Interacting H-poor Supernovae and Fast Blue Optical Transients

Ryotaro Chiba, Semih Tuna, Brian D. Metzger, Takashi J. Moriya · 2026

Around 10 % of hydrogen-poor supernovae explode inside compact ($\sim 10^{15}$ cm), massive ($\sim 0.1 \ \mathrm{M_\odot}$) circumstellar material (CSM), signalling an episode of enhanced pre-explosio…

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Physics Preprint PDF DOI

Systematic VQE Benchmarking of the Deuteron, Triton, and Helium-3 within Lattice Pionless Effective Field Theory

P{i}nar Cifci, Serkan Akkoyun · 2026

We investigate the performance of quantum algorithms for light nuclear systems by studying the deuteron (2H), triton (3H), and helium-3 (3He) nuclei within a lattice formulation of pionless effective …

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Physics Preprint PDF DOI

Viability of Big Bang Nucleosynthesis in Some Generalized Horizon Entropies

Kajal Phukan, Rajdeep Mazumdar, Kalyan Malakar, Kalyan Bhuyan · 2026

In this work, we investigate the viability of some cosmological models derived from generalized horizon entropies, using Big Bang Nucleosynthesis (BBN) constraints. By analyzing the deviations in the …

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Physics Preprint PDF DOI

Observation of field-odd and field-free superconducting diode effects in $\mathrm{Mo}_2\mathrm{C}$ nanoflakes

Wei Gao, Kaixuan Fan, Menghan Li, Jinhao Cheng, Qing Zhang, Shuaishuai Ding, Wenping Hu, Fan Yang, Dechao Geng, Hechen Ren · 2026

The superconducting diode effect (SDE) enables nonreciprocal supercurrent flow, holding immense potential for ultra-low-power quantum electronics. Intrinsic SDE typically requires materials with inher…

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Physics Preprint PDF DOI

Fractional motions of an active particle on the quantum vortex

Yun Jeong Kang, Sung Kyu Seo, Kyungsik Kim · 2026

We analytically investigate the diffusive motion inferred from experimental observations of active particles driven by quantum vortices on the surface of superfluid helium. We first study the dynamica…

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Physics Preprint PDF DOI

Spectroscopic survey of faint planetary-nebula nuclei. VII. Thirty new hydrogen-deficient central stars

Klaus Werner, Howard E. Bond, Gregory R. Zeimann · 2026

Our ongoing spectroscopic survey of faint planetary-nebula nuclei (PNNi) has revealed 30 new hydrogen-deficient central stars. The majority of them (21) belong to the PG1159 spectral class (having He-…

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Physics Preprint PDF DOI

Phonon number relaxation in a 3D superfluid with a concave acoustic branch

Yvan Castin (LKB (Lhomond)), Mariia Tsimokha (LKB (Lhomond)) · 2026

We consider the collisional evolution towards equilibrium of a spatially homogeneous and isotropic phonon gas of a three-dimensional superfluid with a concave acoustic excitation branch, at a non-zero…

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Physics Preprint PDF DOI

Neutron star atmospheres composed of fusion ashes

Valery F. Suleimanov, Juri Poutanen, Klaus Werner · 2026

Here we present models of hot neutron star (NS) atmospheres consisting of thermonuclear ashes of various chemical compositions. These models are essential for studying thermonuclear flashes in X-ray b…

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Chemistry Preprint PDF DOI

Host-guest co-amorphous structure revealed by the suppression of the first sharp diffraction peak in isotactic poly(4-methyl-1-pentene)

Tomoki Ogihara, Yusuke Hiejima, Ayano Chiba · 2026

While host-guest co-crystals are well established, and co-amorphous solids are recognized in materials science, the concept of a host-guest co-amorphous structure remains largely unexplored. A potenti…

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