Tuned Resonances: Exploiting Exceptional Points in Light Scattering
![The study models interacting particles as a dimer of spheres-characterized by radius [latex]a[/latex] and inter-center distance [latex]d[/latex]-and represents their behavior through a two-port equivalent circuit applicable in both full-wave and static regimes, ultimately defining a resonant mode condition where input impedance reaches zero and is sensitive to polarization along the [latex]x[/latex], [latex]y[/latex], and [latex]z[/latex] axes.](https://arxiv.org/html/2512.24104v1/x1.png)
New research reveals how to precisely control light scattering from paired spheres by harnessing exceptional points of degeneracy, opening doors to more sensitive optical sensors.
Science
Quantum Fields in Curved Spacetime: A Phase-Space Approach
This review unveils a powerful formalism for analyzing Gaussian quantum states, revealing insights into phenomena like Hawking radiation and its experimental investigation via analogue gravity systems.
Cosmic Walls of Dark Matter: New Insights into Axion Dynamics
![The study demonstrates that the rescaled root-mean-square velocity of an axion domain wall network evolves predictably with conformal time, indicating a parameter space-where the axion mass [latex]m_a \lesssim 10^8 \text{ eV}[/latex] and the coupling [latex]g_{a\gamma\gamma}[/latex] are relatively small-distinct from previously explored, friction-dominated regimes, as evidenced by concurrent tracking of the rescaled energy density.](https://arxiv.org/html/2512.23775v1/yv_friction.png)
A new theoretical study explores the behavior of axion domain walls in the early universe, revealing how plasma interactions and thermal effects shape these potential dark matter candidates.
Seeing is Believing: How Acceleration Warps the Quantum Vacuum
![The non-uniform Rindler spacetime-a non-inertial framework for observers undergoing non-uniform acceleration-is characterized by event horizons and trajectories that generalize those found in uniform acceleration, as depicted in a [latex]\rm{z}-\rm{t}[/latex] plane where red lines delineate horizons, blue lines trace Rindler trajectories, and green lines denote their generalized counterparts.](https://arxiv.org/html/2512.23892v1/Figures/FIG08.png)
New research reveals that uniformly accelerating observers experience a modified Unruh effect, demonstrating a time-dependent distortion of the quantum vacuum into squeezed states.
Beyond Hermiticity: Supercurrents Powered by Imaginary Andreev Levels
New research reveals how non-Hermitian physics can unlock unusual supercurrent behavior in Josephson junctions, offering a pathway to explore exotic quantum phenomena.
Inside the Proton: Mapping Baryon States with QCD
This review explores how QCD sum rules are used to predict and understand the properties of baryons and exotic baryonium states, providing a comprehensive look at hadron spectroscopy.
The Top Quark at Thirty: A New Era of Precision
![The distribution of [latex]m(t\bar{t})[/latex]-a measure of the top quark-antiquark pair mass-across multiple angular bins demonstrates a correspondence between observed data and quantum chromodynamic predictions, with discrepancies accounted for by a fitted pseudoscalar [latex]\eta_t[/latex] signal, revealing the subtle interplay between perturbative calculations and resonant phenomena in top quark pair production.](https://arxiv.org/html/2512.24464v1/x2.png)
Three decades after its discovery, the top quark continues to reveal subtle nuances in particle physics, driving a new wave of high-precision measurements and theoretical investigations.
Untangling Topology and Loss: A New Frontier for Quantum Control
New research reveals how entanglement can be harnessed to characterize and manipulate dynamic phases in non-Hermitian topological systems, paving the way for advanced quantum information processing.
Beyond Spin: Exploring Quantum Entanglement in Particle Collisions
A new framework proposes testing for entanglement using intrinsic particle properties like flavor, offering a novel path to probe quantum correlations in high-energy physics.
From Quarks to Mesons: A New Model of Hadron Formation
![The analysis extends the previously established framework-detailed in Figure 4-to investigate the behavior of [latex]D_{s}-mesons[/latex], confirming the applicability of the model across a broader range of particle types.](https://arxiv.org/html/2512.22465v1/x_e_spectrum_ratio_charged_D_s_multi_graph.png)
Researchers have developed a comprehensive framework for understanding how quarks and gluons combine to form hadrons, including excited meson states.