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Physics

arXiv preprints from January 1, 2026 through September 6, 2026 — 01:14:50 EST

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Posted in astro-ph.SR · 2026-07-20 · Nethra Rajavel, Dean M. Townsley, Ken J. Shen

Stream-Driven Ignition of a Realistic Undisturbed Helium Shell on a White Dwarf

The dynamically driven double degenerate double detonation (D$^6$) model has emerged as a promising progenitor scenario for Type Ia supernovae. In this model, a carbon-oxygen white dwarf (WD) in a close double WD binary undergoes a double-detonation triggered by dynamical mass transfer from its companion. The mass transfer stream...

💬 0 commentsarXiv:2607.18572v1PDF
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Posted in quant-ph · 2026-07-20 · Wenqi Tong, Spencer J Walsh, H. Alaeian, F. Robicheaux

Nonlinear Optics Mediated by Chiral Waveguide QED: Generation of Momentum-anticorrelated Photon Pairs

In recent years, chiral quantum optics has emerged as an active research area due to the promising applications in quantum information processing as well as nonlinear optics. We present results on the properties of the incoherent component of the transmitted light after transmons chirally coupled to a waveguide. The well-known...

💬 0 commentsarXiv:2607.18562v1PDF
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Posted in physics.plasm-ph · 2026-07-20 · B. Lomanowski, T. Eich, J. D. Lore, J. -S. Park, T. Body, P. Stangeby

The power exhaust constrained SPARC separatrix operational space

In this work we extrapolate the separatrix operational space (SepOS) projections to SPARC and introduce detachment access criteria, thus formulating the combined power exhaust constrained SepOS (i.e., PE-SepOS) to evaluate integrated power exhaust solutions at scale. Through the interpretation of SPARC SOLPS-ITER datasets and...

💬 0 commentsarXiv:2607.18558v1PDF
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Posted in hep-th · 2026-07-20 · Osama Khlaif, Boris Pioline, Alessandro Tanzini

Refined Vafa-Witten invariants for toric surfaces from supersymmetric localization in 5D gauge theory

We study the partition function of five-dimensional $\mathcal{N}=1$ $U(N)$ supersymmetric Yang-Mills (SYM) theory with an adjoint hypermultiplet of mass $m_{\rm adj}$ on a toric Kähler surface $S$ times a circle of radius $\boldsymbolβ$. Extending earlier work in $\mathcal{N}=2^*$ SYM theory on $S$, and in pure $\mathcal{N}=1$ SYM on...

💬 0 commentsarXiv:2607.18410v1PDF
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Posted in math-ph · 2026-07-20 · Vjekoslav Kovač, Ivica Smolić

A converse to generalized Runcorn's theorem

We study an inverse problem for generalized Runcorn's theorem motivated by an apparent paradox of lunar magnetism. In mathematical terms, we characterize square-integrable complex functions $f$ such that $$ \int_{\{ x\in\mathbb{R}^n : a \leq |x| \leq b \}} f(x) \nabla u(x)\cdot\nabla v(x)\,\mathrm{d}\mathrm{V}(x) = 0 $$ for every...

💬 0 commentsarXiv:2607.18379v1PDF
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Posted in hep-th · 2026-07-20 · Arpit Das, Sunil Mukhi

Unlocking the Wronskian Tower: A Simplification of the Holomorphic Modular Bootstrap

Characters of rational conformal field theories solve modular linear differential equations labelled by their order and the Wronskian index $\ell$. Direct classification of admissible solutions by solving MLDEs becomes increasingly difficult at higher $\ell$ -- where movable poles and accessory parameters appear. In this work we...

💬 0 commentsarXiv:2607.18375v1PDF
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Posted in hep-ph · 2026-07-20 · Martin Hentschinski, Krzysztof Kutak, Wieslaw Placzek, Martin Rohrmoser

Deep inelastic scattering as a probe of entanglement: the complete QCD dipole cascade

We study entanglement entropy in Deep Inelastic Scattering (DIS) using the dipole formulation of the high-energy limit of QCD. We argue that a reduced density matrix arises in low $x$ DIS due to a trace over unobserved color degrees of freedom and we obtain entanglement entropy in terms of dipole multiplicities, directly from the von...

💬 0 commentsarXiv:2607.18464v1PDF
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Posted in hep-th · 2026-07-20 · Nicolás Grandi, Scarlett Rebolledo, Aldo Vera

Viscoelastic and thermal response on nuclear pasta states at finite baryon density

We compute the viscoelastic and thermal response of non-homogeneous hadronic condensates at finite baryon density representing crystals of baryonic tubes and layers. We describe them using analytic solutions of the Skyrme model in $3+1$ dimensions as ground states for a perturbative approach. At low enough temperatures, the...

💬 0 commentsarXiv:2607.18463v1PDF
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Posted in physics.optics · 2026-07-20 · S. A. Zhuravitskii, N. S. Kostyuchenko, N. N. Skryabin, I. V. Dyakonov, A. A. Korneev, A. A. Kalinkin, S. S. Straupe, S. P. Kulik

Control of eigenmode localization and coupling anisotropy by multiscan femtosecond laser writing

The multiscan method is widely used in femtosecond laser writing of waveguide systems to increase the refractive index contrast and to control the eigenmode shape. Here, we investigate multiscan writing with a constant effective writing speed and show that the displacement between adjacent scans provides an additional degree of...

💬 0 commentsarXiv:2607.18458v1PDF
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Posted in cond-mat.soft · 2026-07-20 · Andrew J Archer

Variational formulation for the dynamics of soft matter including inertia

The motion of liquids and soft matter is over-damped and `slow' when viscosity dominates. In this (low Reynolds-number) limit and when the system is isothermal, the equations of motion may be generated via Onsager's variational principle, which neglects inertia. This variational approach is immensely powerful, being used to obtain...

💬 0 commentsarXiv:2607.18457v1PDF
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Posted in physics.ins-det · 2026-07-20 · Jory Sonneveld, Thomas Bergauer, Raimon Casanova, Harald Handerkas, Christian Irmler, Jorge Jiménez-Sánchez, Uwe Krämer, Ricardo Marco-Hernandez, José Mazorra de Cose, Fernando Muñoz-Chavero, Rogelio Palomo, Bernhard Pilsl, Sebastian Portschy, Samuel Powell, Patrick Sieberer, Helmut Steininger, Eva Vilella, Benjamin Wade, Chenfan Zhang, Sinuo Zhang

The RD50-MPW4: A Radiation Hard HV CMOS Sensor for Future Colliders

The former CERN RD50 collaboration develops monolithic active pixel high voltage (HV) CMOS sensors for future colliders with the aim of high radiation tolerance, good time resolution, and high granularity pixel detectors. The most recent prototype, the RD50-MPW4, was produced by LFoundry in December 2023 using a 150 nm CMOS process....

💬 0 commentsarXiv:2607.18456v1PDF
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Posted in hep-ph · 2026-07-20 · N. Furey

Standard Model Symmetries and the Nested Embeddings of $\mathbb{R}\subset\mathbb{C}\subset\mathbb{H}\subset\mathbb{O}$

Where do the Standard Model's internal symmetries come from? Treating $\mathbb{O}\oplus\mathbb{H}\oplus\mathbb{C}\oplus\mathbb{R}$ as a module for its own multiplication algebra enables a particular origin story for the Standard Model's pre-Higgs, $\mathfrak{g}_{SM}:=\mathfrak{su}(3)_{C} \oplus \mathfrak{su}(2)_{L} \oplus...

💬 0 commentsarXiv:2607.18450v1PDF
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Posted in hep-ph · 2026-07-20 · Gabriela Barenboim, Anne-Katherine Burns

Detecting Cosmological Stasis with Future Gravitational Wave Observatories

We map the observational predictions of cosmological stasis in the inflationary gravitational wave background onto the sensitivity bands of current and planned gravitational wave detectors. Using the closed-form piecewise spectral template derived in the companion paper, we generate detectability maps for four stasis scenarios:...

💬 0 commentsarXiv:2607.18449v1PDF
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Posted in physics.bio-ph · 2026-07-20 · Nashita Rahman, Mintu Nandi, Sudip Chattopadhyay, Suman K Banik

Feedback-mediated circulation and persistence of stochastic fluctuations in gene regulatory circuits

Feedback plays a significant role in biochemical networks that govern a multitude of cellular functions, including development, adaptation, and homeostasis. Yet, how feedback topology controls stochastic fluctuations remains incompletely understood. Here, we develop a theoretical framework for two-node feedback motifs composed of...

💬 0 commentsarXiv:2607.17743v1PDF
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Posted in physics.soc-ph · 2026-07-17 · Sourav Roy, Md Sayeed Anwar, Timoteo Carletti, Matjaz Perc, Dibakar Ghosh

Diffusion-induced instabilities promote cooperation in eco-evolutionary networks

Understanding how cooperation persists despite the advantage of selfish behavior remains a central challenge in evolutionary dynamics. Classical models of public goods dilemmas predict dominance of defectors, yet natural and social systems often sustain cooperation. We study an eco-evolutionary public goods game on complex networks...

💬 0 commentsarXiv:2607.15989v1PDF
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Posted in cond-mat.str-el · 2026-07-20 · Ya-Hui Zhang

Color superconductors and holon metals from doping a Fractional Chern insulator

We develop a unified framework for metallic and superconducting phases obtained by doping a fractional Chern insulator (FCI) with $C=1/3$. Starting from the parton construction $c(\mathbf r)=f_1(\mathbf r)f_2(\mathbf r)f_3(\mathbf r)$, the low-energy theory has $SU(3)_{\mathrm{gauge}}\times SU(3)_{\mathrm{valley}}$ symmetry and nine...

💬 2 commentsarXiv:2607.18238v1PDF
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Posted in astro-ph.CO · 2026-07-20 · Abhijith Ajith, Utkarsh Kumar

Cosmological consequences of a dynamical dark matter in the light of DESI DR2 measurements

Recent DESI results exhibit preference for a Null Energy Condition violating dynamical dark energy, with early phantom behaviour. We explore an alternative interpretation in which this preference arises from unconventional dark matter dynamics rather than from dynamical dark energy. We propose a dynamical dark matter (DDM) model, with...

💬 0 commentsarXiv:2607.18234v1PDF
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Posted in hep-ph · 2026-07-20 · Maciej Kierkla, Marek Lewicki, Philipp Schicho, Daniel Schmitt, Bogumila Swiezewska

Theoretical uncertainties in reconstructing model parameters with gravitational waves from supercooled phase transitions

Future interferometers may detect a gravitational-wave (GW) signal from a cosmological first-order phase transition. Reconstructing the underlying particle-physics model from such a signal requires theoretical control over the map from microphysics to the spectrum. For classically scale-invariant extensions of the Standard Model,...

💬 0 commentsarXiv:2607.18233v1PDF
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Posted in astro-ph.CO · 2026-07-20 · Caio B. de S. Nascimento, Neal Dalal

Breaking the $f_{\text{NL}}$--$b_φ$ degeneracy with the time evolution of tracer number counts

Constraining local primordial non-Gaussianity through scale-dependent bias requires an accurate determination of the PNG bias parameter $b_φ$, which is completely degenerate with $f_\mathrm{NL}$ in the galaxy power spectrum. The standard universality relation predicts $b_φ$ from the linear bias, but breaks down for realistic galaxy...

💬 0 commentsarXiv:2607.18229v1PDF
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Posted in astro-ph.GA · 2026-07-20 · Samrat Biswas, Biman J Medhi, Sergio Messina, Zhanpeng Zhu, Songmei Qin, Sukanta Deb, A. H. Sheikh, H. S Das, Motohide Tamura, Maheshwar Gopinathan, Ram sagar

Discovery of an Unbound Flyby Companion of UBC 63: In the Immediate Aftermath of a Close Encounter

We re-investigate the open cluster UBC 63 using the Gaia DR3 data and show that, rather than being a single cluster as previously classified, it is a compelling candidate for a double cluster undergoing an unbound flyby interaction. A GMM decomposition performed in the 5D astrometric space reveals the two statistically distinct...

💬 0 commentsarXiv:2607.18224v1PDF
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Posted in hep-th · 2026-07-20 · Jonathan Gräfe, Denis Werth

All Tree-Level Massive Cosmological Correlators via Spectral Gluing

Massive cosmological correlators exhibit a rich hypergeometric structure already at tree level, reflecting the distorted propagation of particles in de Sitter spacetime. In this paper, we reveal that this apparent complexity conceals a remarkably simple underlying mathematical structure. Using the spectral representation, we compute...

💬 0 commentsarXiv:2607.18223v1PDF
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Posted in hep-ph · 2026-07-20 · T. Reymermier, N. Fardeau, F. Mahmoudi

HyperIso: A general BSM calculator for flavour observables

We present HyperIso, a new standalone program for the evaluation of flavour physics observables across a wide variety of Standard Model (SM) and Beyond-the-Standard-Model (BSM) scenarios. The code builds on the physics heritage of SuperIso, but is implemented as a new modular software package with a modern C++ core and multiple user...

💬 0 commentsarXiv:2607.18222v1PDF
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Posted in hep-ph · 2026-07-20 · Yossi Rosenzweig, Yevgeny Kats, Eli Sarid, Menachem Givon, Yonathan Japha, Ron Folman

Correlated comagnetometry for precision measurements

Magnetometers are among the most widely used probes in science and technology. Comagnetometers increase sensitivity by self-cancellation of magnetic noise, but only at low frequencies. We suggest a correlated measurement of two alkali species in one cell to cancel the magnetic background also at high frequencies. The inter-species...

💬 0 commentsarXiv:2607.18221v1PDF
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Posted in gr-qc · 2026-07-20 · Brian McGloughlin, Jing Ming, Maria Alessandra Papa, Kartikey Sharma, Reinhard Prix, Benjamin Steltner, Heinz-Bernd Eggenstein, Na Wang, Jianping Yuan

Search for continuous gravitational waves from the pulsar J0435+3233

We perform a search for continuous gravitational waves from J0435+3233 using LIGO O4a public data. J0435+3233 is unique among millisecond pulsars as it exhibits an exceptionally large spin-down and marks the first pulsar observed to date with a spin-down larger than $10^{-12}$ Hz/s in the sub $10$ ms spin period range, making it a...

💬 0 commentsarXiv:2607.18219v1PDF
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Posted in cond-mat.mes-hall · 2026-07-20 · Ivan Velkovsky, Carlos Camacho, Tomoki Ozawa, Hannah Price, Bryce Gadway

Non-Abelian Gauge Field Mechanics

Non-Abelian gauge fields play a key role in describing the behavior of particles whose motion is coupled to internal degrees of freedom, such as their spin. Here, we experimentally realize a tuneable non-Abelian gauge field in an active mechanical lattice by using pairs of oscillators to encode a local pseudo-spin for each site, with...

💬 0 commentsarXiv:2607.18215v1PDF