Before the Beginning: Can We Truly Know the Universe’s Origin?
New research challenges the notion that singularity theorems definitively prove the universe had a beginning, highlighting the limits of our observational capabilities.
Science
Unlocking the Secrets of Matter: New Insights into Baryon States
![Resonance parameters of the [latex]\Omega^{-}[/latex] baryon and its excited states-determined through experiments at Belle and BESIII-converge with theoretical calculations from existing literature, specifically references [46] and [37], bolstering confidence in the current understanding of these hadronic properties.](https://arxiv.org/html/2603.04141v1/2603.04141v1/x15.png)
The BESIII experiment is pushing the boundaries of hadron physics, revealing crucial details about the composition and interactions of baryons – fundamental building blocks of matter.
The Quantum Mind: How Context Shapes Our Choices
A new framework suggests our cognitive and emotional responses are linked at a deeper level than previously understood, mirroring principles from quantum physics.
Beyond Standard Models: Unveiling Hidden Quantum Advantage in Particle Collisions
![The study reveals how non-local magic power-quantified as [latex]\overline{\mathcal{M}\_{AB}}[/latex] and its integrated form [latex]\left<\mathcal{M}\_{AB}\right> [/latex]-varies with scattering angle, exhibiting distinct behaviors for gluinos, gluons, gravitinos, and gravitons, suggesting a nuanced interplay between these particles and the underlying forces at play.](https://arxiv.org/html/2603.04148v1/2603.04148v1/non_local_magic_power_plot.png)
New research explores how subtle shifts in fundamental physics can disrupt the emergence of quantum advantages in the scattering of gluons and gravitons.
Beyond Einstein: When Gravity’s Symmetry Breaks
A new review explores the consequences of broken spacetime symmetries for gravity theories, and how these violations impact fundamental geometric principles.
Simulating Black Holes with Light
Researchers are harnessing the principles of nonlinear optics to create laboratory analogs of Hawking radiation, offering new avenues to explore black hole physics.
Hunting for the Unknown: Lepton Signals at the LHC
![The search for axion-like particles revealed constraints on the branching fraction [latex]\mathcal{B}(H\to aa\to 4e)[/latex] versus mass [latex]m_{a}[/latex], demonstrating the limits of current detection capabilities and hinting at the elusive nature of physics beyond the Standard Model.](https://arxiv.org/html/2603.04150v1/2603.04150v1/Figures/EXO24031_limit.png)
The CMS experiment continues to push the boundaries of particle physics, meticulously analyzing data for evidence of phenomena beyond our current understanding.
Dark Matter’s Hidden Boost: How Unstable Particles Amplify Annihilation
![The annihilation cross section of [latex]\chi_{1}\bar{\chi}_{1}[/latex] particles-calculated with parameters including [latex]m_{1} = 1~\text{TeV}[/latex], [latex]m_{2}/m_{1} = 1.01[/latex], and [latex]\alpha = 0.2[/latex]-exhibits a pronounced threshold effect at [latex]E_{2} = 0[/latex], with the inclusion of final-state Sommerfeld enhancements-modeled via a cutoff method and defined by equation (29)-significantly altering the cross section compared to calculations neglecting these enhancements and demonstrating a clear dependence on the strength of the Coulomb potential.](https://arxiv.org/html/2603.02647v1/2603.02647v1/x2.png)
New research reveals that interactions between the products of dark matter annihilation can significantly increase the rate at which dark matter particles disappear, impacting our understanding of its abundance in the universe.
Black Hole Echoes Reveal Hidden Geometry
![The black hole model, parameterized by [latex]M=1[/latex], [latex]\ell=1[/latex], and [latex]h=4[/latex], exhibits a fundamental mode with a complex frequency of [latex]\omega=0.249667-0.0827673i[/latex] as determined by time-domain integration, a value closely corroborated by the WKB method yielding [latex]\omega=0.249666-0.082771i[/latex], suggesting the system’s inherent oscillatory decay despite differing computational approaches.](https://arxiv.org/html/2603.03189v1/2603.03189v1/x3.png)
New research demonstrates that subtle vibrations within black holes can expose details of their internal structure, potentially resolving long-standing singularity problems.
Unconventional Magnetism Paves the Way for Exotic Superconductivity
![The study reveals how unconventional superconducting phases emerge in a system subjected to a Zeeman field, demonstrated through spectral analysis showing distinct energy landscapes and spin polarizations-characterized by parameters α, [latex]J_{sd}[/latex], and [latex]B[/latex]-that shift from baseline values to states influenced by both spin-dependent interactions and magnetic fields, ultimately revealing a complex interplay between these forces at [latex]\mu = -2t[/latex] and [latex]t = 1[/latex].](https://arxiv.org/html/2603.03221v1/2603.03221v1/x1.png)
New theoretical work reveals that a unique form of magnetism can give rise to a range of unusual superconducting states, potentially enabling next-generation quantum technologies.