Beyond Perfection: Exploring Broken Supersymmetry with Impurity Deformations
New research delves into how introducing controlled ‘impurities’ into supersymmetric systems can preserve a degree of symmetry while yielding exact, solvable solutions.
Science
Unveiling Fractional Quasiparticles with Quantum Interference
![Within a fractional quantum Hall regime, a Hanbury Brown-Twiss interferometer-constructed from quantum point contacts-facilitates quasiparticle tunneling between co-propagating edge modes, establishing cross-correlation noise measured via drain currents and revealing chiral propagation directions influenced by applied dc voltages [latex]V_1[/latex] and [latex]V_2[/latex].](https://arxiv.org/html/2604.15133v1/device_geometry.png)
A new theoretical study explores how Hanbury Brown-Twiss interferometry can be used to probe the exotic properties of electrons at the edge of a fractional quantum Hall state.
Hunting for New Physics with the Tau Lepton
Future lepton colliders offer a unique opportunity to precisely measure the tau lepton’s properties and search for subtle deviations hinting at physics beyond the Standard Model.
Building Better Materials Models: From Quantum Calculations to Efficient Simulations
![The Extended Density of States Topological Block (EDTB) model, applied to platinum, reveals that spin-orbit coupling induces band splitting and significantly alters the material’s density of states, ultimately manifesting as a distinct intrinsic spin Hall conductivity [latex]\sigma_{xy}^{z}(E)[/latex].](https://arxiv.org/html/2604.14470v1/x2.png)
A new method streamlines the creation of accurate tight-binding models from first-principles calculations, paving the way for large-scale materials property simulations.
Beyond the Standard Model: Probing Interactions with Multiple Bosons at the LHC
![A determination of [latex]\mu_{QCD}[/latex] yields a value of 2.09 with an uncertainty of [latex]^{+0.60}_{-0.57}[/latex], aligning with Standard Model predictions, while measurements of vector boson scattering signal strengths-analyzed with either four or six independent parameters-further corroborate these findings.](https://arxiv.org/html/2604.14753v1/x4.png)
Recent measurements of multiboson production and vector boson scattering at the ATLAS and CMS experiments are rigorously testing the Standard Model and paving the way for new physics searches.
Fractal Dimensions Under the Lens: A New Rigor for Number Theory
![The duality measure [latex]C(\beta, L)[/latex] exhibits convergence as a function of inverse system size [latex]1/L[/latex], with values for [latex]\beta = 2[/latex] and [latex]\beta = 4[/latex] demonstrating a power-law relationship of the form [latex]C(L) = C_{\in fty} + aL^{-b}[/latex] and a scaling exponent of approximately [latex]b = 0.51[/latex], ultimately extrapolating to asymptotic values of [latex]C_{\in fty}(\beta = 2) = 7.154 \pm 1.009[/latex] and [latex]C_{\in fty}(\beta = 4) = 14.636 \pm 1.794[/latex], as determined through Monte Carlo confidence intervals.](https://arxiv.org/html/2604.14596v1/x2.png)
A novel analysis employs resampling and model selection to establish robust confidence intervals for fractal dimensions, offering a more reliable foundation for explorations in number theory.
Predicting the Future: A New Approach to Modeling Complex Systems
Researchers have developed a novel machine learning framework for rapidly and accurately simulating the behavior of nonlinear systems at any given condition.
Shrinking AI: Techniques for Deploying Leaner Models
As artificial intelligence models grow in complexity, researchers are developing innovative methods to reduce their size and computational cost for wider accessibility.
Twisted Light, Entangled Correlations
![The Hanbury Brown-Twiss interferometer correlates intensity fluctuations-either across the full field [latex]\langle I(\mathbf{r}\_{1},t)I(\mathbf{r}\_{2},t+\tau)\rangle[/latex] or resolved by radial and orbital angular momentum [latex]\langle I\_{l}(\rho\_{1},t)I\_{m}(\rho\_{2},t+\tau)\rangle[/latex]-by splitting a random beam, introducing a time delay τ to one path, and measuring the correlation, a technique further refined by employing spiral phase plates and ring apertures to isolate specific intensity components before detection.](https://arxiv.org/html/2604.14452v1/x1.png)
New research reveals how the intensity of light carrying orbital angular momentum exhibits classical entanglement, offering a novel way to characterize its coherence.
Wormholes and the Ghosts of Broken Symmetry
New research reveals how broken supersymmetry gives rise to detectable fermionic signals at the boundaries of D-instantons, offering a novel window into string theory.