Tootfinder

A core-sensitive mixed $f$/$g$ mode of the Sun predicted by wave topology and hydrodynamical simulation
Arthur Le Saux, Armand Leclerc, Guillaume Laibe, Pierre Delplace, Antoine Venaille
https://arxiv.org/abs/2506.09572

A core-sensitive mixed $f$/$g$ mode of the Sun predicted by wave topology and hydrodynamical simulation
Helioseismology has revolutionized our understanding of the Sun by analyzing its global oscillation modes. However, the solar core remains elusive, limiting a full understanding of its evolution. In this work, we study a previously unnoticed global oscillation mode of the Sun using a fully compressible, hydrodynamical simulation of the solar interior, and assess that it is a mixed $f$/$g$ mode with a period of about one hour. This is the first global stellar hydrodynamics simulation that succes…

Non-Abelian orbifolds of the SO(32) heterotic string
Miguel Hernandez-Segura, Saul Ramos-Sanchez
https://arxiv.org/abs/2506.08370 https://

Non-Abelian orbifolds of the SO(32) heterotic string
Non-Abelian toroidal heterotic orbifolds have received comparatively little attention, mainly because of the significant computational challenges they pose, even at the level of computing their matter spectrum. Similarly, the SO(32) heterotic string remains relatively unexplored. In this paper, we provide some useful tools to handle this situation. We find that certain non-Abelian orbifolds can be studied using the techniques that are common to Abelian compactifications. In such cases, we show …

The targeted killing of scientists is murder. It is unacceptable that the government in #Israel simply decides to murder people because it suits their agenda.
I fear that deep hatred will cover Israel and its people for generations, that many Israelis will have to “pay” for the human rights and war crimes of a corrupt head of government

High-Performance Heterodyne Receiver for Quantum Information Processing in a Laser Written Integrated Photonic Platform
Andrea Peri, Giulio Gualandi, Tommaso Bertapelle, Mattia Sabatini, Giacomo Corrielli, Yoann Pi\'etri, Davide Giacomo Marangon, Giuseppe Vallone, Paolo Villoresi, Roberto Osellame, Marco Avesani
https://arxi…

High-Performance Heterodyne Receiver for Quantum Information Processing in a Laser Written Integrated Photonic Platform
Continuous-Variable Quantum Key Distribution (CV-QKD) and Quantum Random Number Generation (CV-QRNG) are critical technologies for secure communication and high-speed randomness generation, exploiting shot-noise-limited coherent detection for their operation. Integrated photonic solutions are key to advancing these protocols, as they enable compact, scalable, and efficient system implementations. In this work, we introduce Femtosecond Laser Micromachining (FLM) on borosilicate glass as a novel …

Slip electron flow in GaAs microscale constrictions
Daniil I. Sarypov, Dmitriy A. Pokhabov, Arthur G. Pogosov, Evgeny Yu. Zhdanov, Andrey A. Shevyrin, Alexander A. Shklyaev, Askhat K. Bakarov
https://arxiv.org/abs/2506.10276

Slip electron flow in GaAs microscale constrictions
Hydrodynamic electron transport in solids, governed by momentum-conserving electron-electron collisions, offers a unique framework to explore collective phenomena. Within this framework, correlated electron motion is modeled as viscous fluid flow, with viscosity serving as the interaction parameter. Advances in electron hydrodynamics remain constrained by two unresolved issues: the questionable existence of perfect boundary slip$\unicode{x2013}$a hallmark of frictionless transport$\unicode{x201…

Emergent Viscous Hydrodynamics From a Single Quantum Particle
Zhi-Li Zhou, Mauricio Hippert, Nicki Mullins, Jorge Noronha
https://arxiv.org/abs/2506.06618 …

Emergent Viscous Hydrodynamics From a Single Quantum Particle
We investigate an explicit example of how spatial decoherence can lead to hydrodynamic behavior in the late-time, long-wavelength regime of open quantum systems. We focus on the case of a single non-relativistic quantum particle linearly coupled to a thermal bath of noninteracting harmonic oscillators at temperature $T$, a la Caldeira and Leggett. Taking advantage of decoherence in the position representation, we expand the reduced density matrix in powers of the off-diagonal spatial components…

Imprints of Different Types of Low-Angular-Momentum Accretion Flow Solutions in General Relativistic Hydrodynamic Simulations
Indu K. Dihingia, Akhil Uniyal, Yosuke Mizuno
https://arxiv.org/abs/2506.05750

Imprints of Different Types of Low-Angular-Momentum Accretion Flow Solutions in General Relativistic Hydrodynamic Simulations
Depending on the astrophysical source and its environment, the accretion flows can exhibit a variety of behaviors and characteristics in accordance with the type of solutions. We study low-angular-momentum accretion flows onto black holes using two-dimensional general relativistic hydrodynamic (GRHD) simulations to find imprints of different types of accretion solutions. Such flows, relevant to X-ray binaries and wind-fed low-luminosity active galactic nuclei, often lack sufficient angular mome…

Large, fast and accurate HI intensity maps with latent overlap diffusion
Satvik Mishra, Roberto Trotta, Matteo Viel
https://arxiv.org/abs/2506.08086 https:…

Large, fast and accurate HI intensity maps with latent overlap diffusion
The distribution of 21 cm emission from neutral hydrogen is a powerful cosmological and astrophysical probe, as it traces the underlying dark matter and cold gas distributions throughout cosmic times. However, the prediction of observable signals is hindered by the large computational costs of the required hydrodynamic simulations. We introduce a novel machine learning pipeline that, once trained on a hydrodynamical simulation, is able to generate both halo mass density maps and the three-dimen…

Application range of perfect spin hydrodynamics
Zbigniew Drogosz, Wojciech Florkowski, Valeriya Mykhaylova
https://arxiv.org/abs/2506.01537 https://…

Application range of perfect spin hydrodynamics
The application range of perfect spin hydrodynamics is studied in two cases: one based on the classical spin description and the other using a quantum spin density matrix (Wigner function). Different forms of the conditions connecting the components of the spin polarization tensor, particle mass, temperature, and hydrodynamic flow are introduced, and their mutual relations are explained. The results obtained are important for practical applications of spin hydrodynamics to model heavy-ion colli…

The interplay of the parametric instability and MRI in oscillatory shear flows
Callum W. Fairbairn, James M. Stone
https://arxiv.org/abs/2506.08839 https:/…

The interplay of the parametric instability and MRI in oscillatory shear flows
The evolution of warped disks is governed by internal, oscillatory shear flows driven by their distorted geometry. However, these flows are known to be vigorously unstable to a hydrodynamic parametric instability. In many warped systems this might coexist and compete with the magnetorotational instability. The interplay of these phenomena and their combined impact on the internal flows has not been studied. To this end we perform three-dimensional, magneto+hydrodynamic unstratified shearing box…