Squeezing Light to Reveal Hidden Material States
![The observed photon statistics-specifically the [latex]g^{(2)}(0)[/latex] metric-reveals definitive signatures of ultrastrong coupling in hybrid photon-matter systems, demonstrating a transition from anti-bunching originating in avoided two-photon resonances within a dark-cavity ground state, to stimulated emission-evidenced by the [latex]IIOO[/latex] process-whereby a single input photon triggers the ejection of two dark-cavity photons, a competition that manifests as a non-monotonic evolution of the [latex]g^{(2)}(0)[/latex] minimum with increasing κ, and remains invisible in conventional transmission measurements.](https://arxiv.org/html/2604.15417v1/x2.png)
New research demonstrates strong interactions between light and material excitations at terahertz frequencies, unlocking observable nonlinear optical effects.
Science
Symmetry’s Hidden Geometry: A Superspace Formulation
A new framework maps the symmetries and anomalies of supersymmetric theories onto the geometric landscape of supermanifolds, offering a powerful tool for theoretical physicists.
Beyond Charged Currents: Neutrinos Unlock New Physics
A new analysis reveals that neutral current interactions in long-baseline neutrino experiments offer a powerful, independent pathway to search for non-standard interactions and resolve key parameter uncertainties.
Beyond Standard Models: New Insights into Nuclear Decay
![Calculations employing both Random Phase Approximation (RPA) and Self-consistent RPA (SSRPA) with various Skyrme energy density functionals reveal the nuanced relationship between β decay lifetimes and Gamow-Teller [latex]B(GT)[latex] values, demonstrating how SSRPA offers a more stable and complete prediction-particularly for nuclei where standard RPA calculations diverge-and correlates observed [latex]1^+\[/latex] state energies with [latex]B(GT)[latex] values exceeding a critical threshold, as validated by data from the National Nuclear Data Center.](https://arxiv.org/html/2604.15817v1/x5.png)
A refined theoretical approach is delivering more accurate predictions of how atomic nuclei respond to excitation and undergo beta decay.
Unlocking the Secrets of Exotic Hadrons
A new analysis reveals the complex internal structure of recently discovered exotic particles, shedding light on the strong force that binds matter.
Lost in Translation: How Decoherence Reveals a Hidden Symmetry
![The emergence of long-range order isn’t a property of the system itself, but a consequence of how information is lost - specifically, how dephasing, acting as an attractive force in a doubled quantum space, drives correlations mirroring spontaneous symmetry breaking and manifesting as detectable order even when the underlying system appears disordered, a connection formalized through Rényi correlators and expressed mathematically as [latex] \bm{x} [/latex] in relation to displaced probability distributions.](https://arxiv.org/html/2604.16137v1/x1.png)
Researchers have experimentally observed a unique form of symmetry breaking driven by the loss of quantum information in a dephased Fermi gas, offering new insights into the behavior of complex quantum systems.
Spinning New Limits on Matter-Antimatter Asymmetry
![Current experimental data on electric dipole moments places constraints on the possible values of strange-quark dipole operators, with sensitivity to the strange-quark chromoelectric dipole moment [latex] \tilde{d}_{s} [/latex] primarily enhanced by measurements of the Λ hyperon’s EDM, while the neutron EDM more effectively constrains the [latex] d_{s} [/latex] operator, as illustrated by differing allowed regions under various scenarios.](https://arxiv.org/html/2604.15487v1/x3.png)
A precision search for electric dipole moments in hyperons at the BESIII experiment dramatically constrains theories beyond the Standard Model.
Before Space and Time: Reconstructing Reality from Its Shadows
A new theoretical framework proposes that spacetime isn’t fundamental, but emerges from an asymmetric projection rooted in a pre-geometric realm.
Mapping the Evolution of Science
A new approach leverages citation networks and semantic analysis to quantify how scientific ideas shift and evolve over time.
Seeing Beyond the Horizon: Connecting Black Hole Geometry to Observable Signals
![The analytic eikonal Green’s functions [latex]\Gamma_{\ell}(\omega)[/latex], as determined by Eq. (38) for multipoles [latex]\ell = 3, 4[/latex], demonstrate that a larger [latex]\ell[/latex] value yields a steeper transition, while variations in the black-hole core-size ratio [latex]y = 3M/\lambda[/latex]-specifically, values of 0.8, 1.5, 3, and 6 at a fixed coupling [latex]\beta = 0.03[/latex]-systematically shift the center and width of the function through the scaling factors [latex]S(y)[/latex] and [latex]\mathcal{F}_{\lambda}(y)[/latex].](https://arxiv.org/html/2604.14999v1/gbf_multiell_vs_params_main2.png)
A new analytical framework links the complex geometry of scalarized black holes in modified gravity to key observable phenomena like quasinormal modes and gravitational lensing.