Beyond Shannon: Rethinking Information with Tsallis Entropy
A new framework extends information theory using a generalized entropy function, offering deeper insights into non-equilibrium systems.
Science
Beyond Mesons and Baryons: Hunting Five-Flavor Pentaquarks
![The relationship between reduced mass and binding energy demonstrates a consistent pattern across bound states-specifically for [latex]\Xi_{b}\bar{D}[/latex] and [latex]\Xi_{c}B[/latex] with [latex]I(J^{P})=0(1/2^{-})[/latex]-suggesting that the interaction strength dictates the energetic stability irrespective of the specific particle composition.](https://arxiv.org/html/2603.23287v1/x2.png)
A new theoretical study predicts the existence of unusual pentaquark states composed of five distinct quark flavors, potentially opening a new frontier in hadron physics.
Gravitational Waves and the Echoes of Infinity
New research explores the subtle violations of expected behavior in gravitational waves as they propagate to infinity, revealing connections to fundamental principles of quantum gravity.
Dark Matter Hunt Expands with Novel Detection Technique
New results from the COSINE-100 experiment leverage an ultra-sensitive approach to probe previously unexplored regions of dark matter interaction space.
Hunting for Dark Matter with Floating Superconductors
![Sensitivity projections reveal how improvements to experimental setups-from baseline to future iterations-sharpen the potential detection of dark graviton coupling to both matter [latex]\alpha_{\mathfrak{m}}[/latex] and light [latex]\alpha_{\mathfrak{l}}[/latex] across a range of frequencies, with resonant scans exhibiting the most promising sensitivity and already beginning to challenge existing constraints from fifth-force experiments and recent gravitational wave observations, which apply differently depending on the coupling type.](https://arxiv.org/html/2603.22647v1/x2.png)
Researchers are exploring a novel approach to detecting dark matter by leveraging the sensitivity of magnetically levitated superconductors to extremely weak forces.
Beyond Crystals: Hunting Dark Matter in Glassy Solids
A new approach to dark matter detection proposes harnessing the unique phonon interactions within amorphous materials to broaden the search for weakly interacting particles.
Taming Gravity: New Insights from String Theory
![The numerical solution to the TOV-scalar system of equations demonstrates behavior outside a neutron star with a mass scale of [latex]m_{\mathfrak{a}} = 10^{-{15}} \text{eV}[/latex].](https://arxiv.org/html/2603.23204v1/Preliminary.png)
Researchers are exploring how multi-field screening mechanisms in string compactifications could effectively suppress unwanted fifth forces and reconcile theoretical predictions with astrophysical observations.
Gravity’s Grip: Atom Interferometry Confirms Einstein’s Prediction in Orbit
A pioneering space-based experiment has put Einstein’s Weak Equivalence Principle to the test using the delicate physics of cold atoms, achieving unprecedented precision.
Hunting for Top Quark Pairs: A Search for New Physics
![The theoretical framework explores particle interactions through leading-order Feynman diagrams, specifically detailing the production and decay pathways of a spin-1 [latex]\PZpr[/latex] boson and contrasting these with those of a scalar or pseudoscalar [latex]\PSA[/latex] resonance.](https://arxiv.org/html/2603.23454v1/x2.png)
Researchers using the CMS detector have scoured proton-proton collision data for evidence of new, heavy particles that decay into pairs of top quarks.
Beyond the Plate: New Geometries Illuminate Short-Range Forces
A new analysis reveals that carefully designed experimental setups can dramatically enhance our ability to detect subtle forces at the nanoscale, opening a path to explore physics beyond the Standard Model.