Tootfinder

Huge respect for Andrea Sella. He's returned his Faraday prize to the Royal Society as protest against the Society's inaction over #ElonMusk. He joins Dorothy Bishop and Andrew Miller who resigned from the society.
https:/…

Royal Society prize winner returns award in protest over Elon Musk
Andrea Sella is latest scientist to express dismay over UK science academy’s refusal to criticise tech billionaire

The polarization of strongly lensed point-like radio sources
Xinzhong Er
https://arxiv.org/abs/2506.05772 https://arxiv.org/pdf/2506.…

The polarization of strongly lensed point-like radio sources
Aims. The magnetized medium induces birefringence, splitting the light into two distinct wave modes. The differing propagation speeds of the two modes result in different trajectories. Strong gravitational lensing amplifies the birefringence and introduces an additional geometric rotation on top of the Faraday rotation. We compare the geometric rotation with the Faraday rotation. Methods. We construct the lens equation for massive objects in a magnetized plasma environment, and calculate the ti…

tin foil hats are old fashioned.
we need Faraday balaclavas.

Phenomenology of altermagnets
Maxim Mostovoy
https://arxiv.org/abs/2506.01823 https://arxiv.org/pdf/2506.01823

Phenomenology of altermagnets
Altermagnets have recently emerged as a new class of magnetic materials sharing properties of both antiferromagnets and ferromagnets. Despite very small net magnetization, they show phenomena usually associated with ferromagnetism, such as the Faraday, Kerr and Anomalous Hall effects, resulting from the relativistic spin-orbit coupling, as well as the spin splitting of electron bands and Spin Hall Effect of non-relativistic origin. Spin space groups and magnetic multipoles are used to explain s…

This https://arxiv.org/abs/2411.10437 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Nitrogen vacancy center in diamond-based Faraday magnetometer
The nitrogen vacancy (NV) center in diamond is a versatile color center used for magnetometry, quantum computing, and quantum communications. In this article, using a single laser beam as a pump and probe, we measure the spin states of the NV center using the Faraday effect and use such measurements to develop a novel magnetic field sensor. Using the spin-state-dependent effect on the left and right circularly polarized light, we probe and confirm the existence of spin-orbit coupling in the NV …

This https://arxiv.org/abs/2501.00325 has been replaced.
initial toot: https://mastoxiv.page/@a…

Deeper insight into the terahertz response of conventional superconductors under magnetic field
We investigate the terahertz conductivity of conventional superconductors in Voigt and Faraday magneto-optical configurations. First, we review theoretical approaches describing the fundamental processes of suppression of superconductivity in magnetic field and how the in-gap states are filled. In the Voigt geometry, thin superconducting films are fully penetrated by the magnetic field which interacts with the spin, thus modifying the magnitudes of the optical gap and of the density of the cond…

This https://arxiv.org/abs/2209.03350 has been replaced.
link: https://scholar.google.com/scholar?q=a

Modeling Polarized Radio Sounding Observations of a Coronal Mass Ejection
Coronal Mass Ejections (CMEs) evolve significantly as they propagate from the Sun to the Earth, so remote observations of their changes in speed, strength of the magnetic field, density, and overall structure are critical for predicting their arrival time and geoeffectiveness. Radio line-of-sight observations of Faraday rotation and Total Electron Content combined with white-light observations enables the measurement of these properties with careful analyses. This paper describes the analysis t…

This https://arxiv.org/abs/2503.06449 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Wind of Change: Faraday Rotation in a Simulated Large Magellanic Cloud
Magnetic fields significantly influence the structure of galaxies' interstellar media, but our understanding of magnetic field strengths and structures in external galaxies is severely limited. The Large Magellanic Cloud (LMC) offers a unique opportunity for improvement due to its proximity and large angular size, allowing for various detailed observations, particularly rich datasets of rotation measures and dispersion measures (RM and DM). However, interpreting these measurements is challengin…

This https://arxiv.org/abs/2311.12729 has been replaced.
initial toot: https://mastoxiv.page/@a…

Adiabatic observables and Berry curvatures in insulators and metals
A sharp definition of what "adiabatic" means is given; it is then shown that the time-dependent expectation value of a quantum-mechanical observable in the adiabatic limit can be expressed -- in many cases -- by means of the appropriate Berry curvature. Condensed-matter observables belonging to this class include: Born effective charges in insulators and in metals, quantized Faraday charges in electrolytes, and linear dc conductivities (longitudinal and transverse). Remarkably, the adiabatic li…

Competing Mechanisms at Vibrated Interfaces of Density-Stratified Fluids
Tianyi Chu, Benjamin Wilfong, Timothy Koehler, Ryan M. McMullen, Spencer H. Bryngelson
https://arxiv.org/abs/2505.23578

Competing Mechanisms at Vibrated Interfaces of Density-Stratified Fluids
Fluid--fluid interfacial instability and subsequent fluid mixing are ubiquitous in nature and engineering. Two hydrodynamic instabilities have long been thought to govern the interface behavior: the pressure gradient-driven long-wavelength Rayleigh--Taylor (RT) instability and resonance-induced short-wavelength Faraday instability. However, neither instability alone can explain the dynamics when both mechanisms act concurrently. Instead, we identify a previously unseen multi-modal instability e…

Design and performance of a Toroidal RF Volume Coil with Intrinsic Electromagnetic Interference Rejection for low-field Portable Halbach-Based MRI Systems
Jules Vliem (Electrical Engineering Department, Eindhoven University of Technology, Eindhoven, The Netherlands), Najac Chloe (C.J. Gorter MRI Center, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands), Beatrice Lena (C.J. Gorter MRI Center, Department of Radiology, Leiden University Medical Center, Le…

Design and performance of a Toroidal RF Volume Coil with Intrinsic Electromagnetic Interference Rejection for low-field Portable Halbach-Based MRI Systems
Purpose: One of the intrinsic limitations of low-field MRI is low signal-to-noise ratio (SNR), which can be further reduced by electromagnetic interference (EMI) due to the lack of a Faraday shielded room. To address this issue, we propose a novel RF coil design that is inherently less sensitive to EMI while maintaining high receive sensitivity. Methods: The proposed coil structure is based on an anapole (toroidal) design and consists of six rings, each containing four continuous wires wound ar…