Symmetry’s End: Engineering High-Q Resonances with Topological Quasibound States
Breaking mirror symmetry in plasmonic crystals provides a novel pathway to transition between bound states in the continuum and high-quality quasi-bound states, enabling precise control over light-matter interactions.

![The study demonstrates a precise correspondence between Next-to-Next-to-Leading Order (NNLO) differential decay distributions in [latex]b \to X_u \ell \bar{\nu}[/latex] and those derived from fitted [latex]W_i^{(2)}[/latex] distributions, with the analytic results for the [latex]\hat{q}^2[/latex] distribution serving as a foundational element for the fitting procedure.](https://arxiv.org/html/2601.15447v1/x15.png)

![Within a spherically symmetric conformal flow, the Jang slope [latex]Q(r)[/latex] increases monotonically from zero at the horizon, approaching a limiting value of one only asymptotically-a behavior that avoids the finite radius breakdown observed in the Jang/zero divergence system.](https://arxiv.org/html/2601.15359v1/x3.png)

![The quantum dimer model, studied on a weighted triangular lattice and formalized as [latex] Eq. (5) [/latex], demonstrates a continuous phase transition-from a disordered ‘spin liquid’ to an ordered ‘columnar’ state-reflected in the macroscopic behavior of classical double-dimer coverings, where the prevalence of large loops indicates disorder ([latex]\alpha < 3[/latex]) and small loops/edges signify order ([latex]\alpha > 3[/latex]), offering an intuitive link between classical loop behavior and the observed vison correlator behavior within the quantum system.](https://arxiv.org/html/2601.15377v1/x3.png)