Tootfinder

Energy-Efficient Digital Design: A Comparative Study of Event-Driven and Clock-Driven Spiking Neurons
Filippo Marostica, Alessio Carpegna, Alessandro Savino, Stefano Di Carlo
https://arxiv.org/abs/2506.13268

Energy-Efficient Digital Design: A Comparative Study of Event-Driven and Clock-Driven Spiking Neurons
This paper presents a comprehensive evaluation of Spiking Neural Network (SNN) neuron models for hardware acceleration by comparing event driven and clock-driven implementations. We begin our investigation in software, rapidly prototyping and testing various SNN models based on different variants of the Leaky Integrate and Fire (LIF) neuron across multiple datasets. This phase enables controlled performance assessment and informs design refinement. Our subsequent hardware phase, implemented on …

Diffusion-based Inverse Observation Model for Artificial Skin
Ante Maric, Julius Jankowski, Giammarco Caroleo, Alessandro Albini, Perla Maiolino, Sylvain Calinon
https://arxiv.org/abs/2506.13986

Diffusion-based Inverse Observation Model for Artificial Skin
Contact-based estimation of object pose is challenging due to discontinuities and ambiguous observations that can correspond to multiple possible system states. This multimodality makes it difficult to efficiently sample valid hypotheses while respecting contact constraints. Diffusion models can learn to generate samples from such multimodal probability distributions through denoising algorithms. We leverage these probabilistic modeling capabilities to learn an inverse observation model conditi…

On the prospects of thermalization of axion-SU(2) inflation
Sukannya Bhattacharya, Matteo Fasiello, Alexandros Papageorgiou, Ema Dimastrogiovanni
https://arxiv.org/abs/2506.11853 …

On the prospects of thermalization of axion-SU(2) inflation
Axion inflation models coupled to a gauge sector via a Chern-Simons term exhibit an array of interesting phenomenology including a chiral gravitational wave spectrum and primordial black hole production. They may also provide a useful mechanism for generating lepton asymmetry. The possibility to embed this class of models in UV-finite theories and their intriguing, testable, signatures make for a compelling candidate for early acceleration. Due to the Chern-Simons coupling, gauge modes may unde…

The conformal limit for bimerons in easy-plane chiral magnets
Bin Deng, Radu Ignat, Xavier Lamy
https://arxiv.org/abs/2506.11955 https://

The conformal limit for bimerons in easy-plane chiral magnets
We study minimizers $\boldsymbol{m}\colon \mathbb R^2\to\mathbb S^2$ of the energy functional \begin{align*} E_σ(\boldsymbol{m}) = \int_{\mathbb R^2} \bigg(\frac 12 |\nabla\boldsymbol{m}|^2 +σ^2 \boldsymbol{ m} \cdot \nabla \times\boldsymbol{m} +σ^2 m_3^2 \bigg)\, dx\,, \end{align*} for $0<σ\ll 1$, with prescribed topological degree \begin{align*} Q(\boldsymbol{m})=\frac{1}{4π} \int_{\mathbb R^2}\boldsymbol{m} \cdot \partial_1 \boldsymbol{m}\times\partial_2\boldsymbol{m}\, dx =…

Search for post-inflationary QCD axions with a quantum-limited tunable microwave receiver
Giosu\`e Sardo Infirri, David Alesini, Caterina Braggio, Giulio Cappelli, Giovanni Carugno, Domenico D'Agostino, Alessandro D'Elia, Daniele Di Gioacchino, Raffaele Di Vora, Martina Esposito, Paolo Falferi, Umberto Gambardella, Antonios Gardikiotis, Claudio Gatti, Carlo Ligi, Giordano Lilli, Augusto Lombardi, Giovanni Maccarrone, Dora Maiello, Antonello Ortolan, Arpit Ranadive, Alessio Rett…

Search for post-inflationary QCD axions with a quantum-limited tunable microwave receiver
A search for cosmological axions has been performed by scanning a frequency region of $38\,$MHz centered at about $10.2\,$GHz, corresponding to an axion mass $m_a \simeq 42\,μ$eV. The QUAX experimental apparatus, a haloscope comprised of a 1-liter volume tunable cavity immersed in an $8\,$T magnetic field and a quantum-limited detection chain, set limits on the axion-photon coupling at the $10^{-14}\,$GeV$^{-1}$ level. As no signal candidate has been observed, viable hadronic axion models are …

Physicality Dominant Alpha Dog – Jaire Alexander, The Perfect Pete Carroll CB https://raiderramble.com/2025/06/09/physicality-dominant-alpha-dog-jaire-alexander-pete-carroll/

Generic Chiral Anomaly and Planar Hall Effect in a Non-Weyl System
Yongjian Wang, Alexander Wowchik, Thomas Boemerich, A. A. Taskin, Achim Rosch, Yoichi Ando
https://arxiv.org/abs/2506.09756

Generic Chiral Anomaly and Planar Hall Effect in a Non-Weyl System
The condensed-matter version of the chiral anomaly describes how electrons are pumped from a Weyl node with negative chirality to a Weyl node with positive chirality using parallel electric and magnetic fields. Key experimental signatures are a negative longitudinal magnetoresistance (LMR) and the planar Hall effect (PHE), both of which have been experimentally observed. Here, we show that the chiral anomaly explains key features of magnetotransport in the nodal-line semimetal ZrTe$_5$ despite …

Equation of State and First Principles Prediction of the Vibrational Matrix Shift of Solid Parahydrogen
Alexander Ibrahim, Lecheng Wang, Tom Halverson, Robert J Le Roy, Pierre-Nicholas Roy
https://arxiv.org/abs/2506.01294

Equation of State and First Principles Prediction of the Vibrational Matrix Shift of Solid Parahydrogen
We generate the equation of state (EOS) of solid parahydrogen using a path-integral Monte Carlo (PIMC) simulation based on a highly accurate first-principles adiabatic hindered rotor (AHR) potential energy curve for the \para dimer. The EOS curves for the fcc and hcp structures of solid parahydrogen near the equilibrium density show that the hcp structure is the more stable of the two, in agreement with experiment. To accurately reproduce the structural and energy properties of solid parahydrog…

An SCMA Receiver for 6G NTN based on Multi-Task Learning
Bruno De Filippo, Carla Amatetti, Riccardo Campana, Alessandro Guidotti, Alessandro Vanelli-Coralli
https://arxiv.org/abs/2506.05111

An SCMA Receiver for 6G NTN based on Multi-Task Learning
Future 6G networks are envisioned to enhance the user experience in a multitude of different ways. The unification of existing terrestrial networks with non-terrestrial network (NTN) components will provide users with ubiquitous connectivity. Multi-access edge computing (MEC) will enable low-latency services, with computations performed closer to the end users, and distributed learning paradigms. Advanced multiple access schemes, such as sparse code multiple access (SCMA), can be employed to ef…

Robust quantification of the diamond nitrogen-vacancy center charge state via photoluminescence spectroscopy
Giannis Thalassinos, Daniel J. McCloskey, Alessandro Mameli, Alexander J. Healey, Charlie Pattinson, David Simpson, Brant C. Gibson, Alastair Stacey, Nikolai Dontschuk, Philipp Reineck
https://arxiv.org/abs/2506.05786

Robust quantification of the diamond nitrogen-vacancy center charge state via photoluminescence spectroscopy
Nitrogen vacancy (NV) centers in diamond are at the heart of many emerging quantum technologies, all of which require control over the NV charge state. Hence, methods for quantification of the relative photoluminescence (PL) intensities of the NV$^0$ and NV$^-$ charge state, i.e., a charge state ratio, are vital. Several approaches to quantify NV charge state ratios have been reported but are either limited to bulk-like NV diamond samples or yield qualitative results. We propose an NV charge st…