Seeking Dark Matter’s Shadow: A New Interferometry Approach
![A neutron interferometer manipulates the phase of quantum particles by directing them along magnetically shielded paths-split, reflected, and recombined-and modulating an applied field [latex]\vec{\bf B}\_{II}[/latex] via a phase shifter, thereby demonstrating control over their interference patterns at detectors.](https://arxiv.org/html/2602.17218v1/schema_V5.png)
A novel experiment leveraging neutron interferometry could reveal the elusive interactions between ordinary matter and the hidden sector of dark matter.
Science
Beyond the Standard Model of Superconductivity
A new theoretical extension of the Abelian-Higgs model incorporates tensor gauge fields and higher-spin particles to explore modified electromagnetic properties within superconductors.
Unlocking Exotic Hadrons: The Power of Strangeness
A new review explores how the unique properties of strange quarks may be the key to understanding the structure and stability of unusual hadronic molecules.
Mirror Systems: Bridging Symmetry and One-Way Waves
A new theoretical framework connects reciprocal symmetry in quantum field theory to the behavior of nonreciprocal stochastic systems, offering insights into diverse physical phenomena.
Why Cause Must Follow Effect
A new analysis reveals a fundamental principle governing causal relationships in complex systems, suggesting that entropy consistently increases from cause to effect.
Entangling Space and Time: A New Entropy for Quantum Fields
![The spacetime is partitioned into causally complementary Rindler wedges-depicted as red and blue subdiamonds-with a focus on sprinkling points within each to facilitate the calculation of entanglement entropy via equations [latex] (38) [/latex] and [latex] (41) [/latex].](https://arxiv.org/html/2602.16782v1/x2.png)
Researchers have developed a novel approach to quantifying entanglement in spacetime, offering a powerful tool for exploring the quantum nature of gravity.
A Light Mediator for Dark Matter Interactions
![The study demonstrates that within a resonant regime, the relic abundance of dark matter is acutely sensitive to both the mass of the mediator - particularly around [latex]m_X = 17\,\mathrm{MeV}[/latex] as hypothesized by the X17 boson - and the strength of the dark-sector coupling [latex]g_\chi[/latex], with specific combinations yielding a relic density consistent with observed values of [latex]\Omega_{\rm DM}h^2 = 0.12[/latex] for dark matter masses ranging from 1 to 8 MeV and couplings between [latex]7.5 \times 10^{-{13}}[/latex] and [latex]8.5 \times 10^{-{13}}[/latex].](https://arxiv.org/html/2602.17620v1/x6.png)
New research suggests a 17 MeV boson could bridge the gap between dark matter and the Standard Model, offering a potential explanation for observed anomalies.
Simulating Discovery: AI Predicts Quantum Material Properties
A new framework leverages physics-based simulations and large-scale datasets to dramatically improve the characterization of 2D quantum materials.
Mapping the Universe with Gravitational Wave Shapes
![The study demonstrates that parameter estimation in gravitational wave signals is susceptible to degeneracy, where the injected signal-dependent on both general relativity parameters [latex]\boldsymbol{\theta}_{t}[/latex] and beyond-GR parameters [latex]\boldsymbol{\lambda}_{t}[/latex]-can be misrepresented by a model at the true GR parameters [latex]\boldsymbol{\theta}_{t}[/latex] or a best-fit signal at [latex]\boldsymbol{\theta}_{ML}[/latex], resulting in biased waveforms [latex]\Delta h[/latex] and a measurable residual signal [latex]\Delta h^{\perp}[/latex] distributed across a high-dimensional manifold defined by frequency-bin values [latex](d_{1}, d_{2}, d_{3})[/latex].](https://arxiv.org/html/2602.17524v1/x1.png)
A new geometric approach uses the subtle forms of gravitational waves to rigorously test Einstein’s theory and search for signs of new physics.
Illuminating Electrons: Shaping Matter with Light
A new era of electron science is emerging, where light is used to sculpt and control electron beams with unprecedented precision.