AI Navigates the Laws of Fluid Motion
![The framework establishes a closed loop of automated scientific inquiry-planning sampling strategies over a parameter space [latex]\mathcal{P}[/latex], executing them through a modular tool interface connected to a latent foundation model for on-demand physics simulations, and critically validating outputs to refine a shared knowledge base-continuing until convergence and culminating in a synthesized report of findings.](https://arxiv.org/html/2604.09584v1/figures/flow-agentic-overview-v3.png)
A new approach combines artificial intelligence with physics simulations to autonomously discover fundamental relationships in complex flow systems.
Science
Catching Light in Time: A New State of Matter Observed
Researchers have, for the first time, experimentally created and observed bound states in the continuum that exist not in space, but in time, opening up new possibilities for manipulating light and other waves.
Beyond the Horizon: Mapping the Universe with Quantum Boundaries
![The study reveals a canonical Euclidean action, defined in terms of [latex]L_0[/latex] and [latex]L_c[/latex], which delineates a spectrum of de Sitter microstates above the HP transition, excluding geometries with excessive boundary energy-indicated by [latex]L_0 > 2\pi\ell[/latex]-and sparsely populated high-energy configurations, thus demonstrating a finite and well-defined spectrum derived from a [latex]T^2 + \Lambda + \dots[/latex] deformation.](https://arxiv.org/html/2604.10267v1/I-L0-single.png)
A new framework leverages finite quantum systems to model the structure of de Sitter space and explore the interplay between entanglement and cosmological horizons.
Unlocking the Secrets of Extreme Matter
New results from the STAR experiment at RHIC reveal insights into the properties of the Quark-Gluon Plasma and the structure of nuclear matter.
Hunting for Missing Pieces: A Search for New Physics in Λc+ Decays
![The distributions of [latex]m_{BC}[/latex] and [latex]\Delta E[/latex]-generated from a simulation of twenty thousand events at a center-of-mass energy of 4.682 GeV and a missing mass of 1.110 GeV-define event-selection windows, with the decay of the [latex]\Lambda^{+}_{c}b[/latex] baryon to [latex]K^{+}K^{+}missing[/latex] exhibiting a distribution shape nearly identical to that of a pion decay.](https://arxiv.org/html/2604.11329v1/x9.png)
Researchers are leveraging the Super Tau-Charm Facility to probe potential violations of fundamental symmetries in the decay of Λc+ baryons, seeking evidence of sterile neutrinos or other exotic particles.
Fragmented Reality: A Quantum Link Between Energy, Dark Energy, and Spacetime
New research proposes that the very fabric of spacetime emerges from the fragmentation of the Universe’s quantum state, offering a novel perspective on dark energy and the nature of gravity.
Beyond Resistance: Unlocking the Secrets of Quantum Materials
![Granular aluminum films exhibit a dome-like superconducting phase, where the critical temperature [latex]T_c[/latex] peaks at an optimal resistivity, and dynamical conductivity-specifically [latex]\sigma_1(\nu)[/latex] and [latex]\sigma_2(\nu)[/latex]-varies across the film, aligning with predictions from Mattis-Bardeen theory, though exhibiting excess conductivity at low frequencies beyond the scope of that model.](https://arxiv.org/html/2604.10621v1/x30.png)
A new review explores the intricate relationship between superconductivity, quantum criticality, and collective electronic behavior in diverse materials.
Cosmic Strings and the Fabric of Spacetime
New research explores how quantum entanglement in cosmic strings can reveal the hidden geometry of exotic spacetimes, including those containing wormholes.
Probing Singularities: New Insights from D2-Brane Theories
This research introduces a systematic approach to understanding complex geometric singularities by leveraging deformations of 3D gauge theories and the power of mirror symmetry.
Frozen Motion: How Interacting Particles Can Halt in Time
![The study demonstrates how a driven, two-mode bosonic system, modeled within a Fock space framework and subject to two-body interactions, exhibits a transition from quantum to classical evolution-a shift evidenced by the divergence of mean-field trajectories and Husimi distributions at increasing periods, beginning with initial states [latex]\ket{\psi\_{0}}=\ket{100,100}[/latex] and characterized by parameters such as rotation angle [latex]a=0.1[/latex] and torsion amplitude [latex]b=600[/latex].](https://arxiv.org/html/2604.09224v1/x1.png)
New research reveals a surprising state of matter where many-body interactions prevent particles from exploring all possible states, leading to a form of ‘dynamical localization’.