A new analysis reveals that observational data places stringent limits on deviations from Hermiticity in quantum mechanics, impacting our understanding of the universe’s earliest moments and long-term evolution.
![The study demonstrates that near a quantum critical point, Fisher zeros coalesce into expanding closed loops, with the inverse imaginary part of the rightmost zero scaling linearly with [latex]1-g[/latex], and a divergence in the density of states-manifesting as van Hove singularities-occurs as [latex]g[/latex] approaches zero, evidenced by dispersion relations exhibiting a Luttinger-liquid velocity proportional to [latex]\sqrt{1-g^{2}}[/latex], while a small anisotropy introduces a dependence of [latex]1/\beta_{i0} \sim \sqrt{0.99-g^{2}}[/latex] for open zero lines.](https://arxiv.org/html/2602.05899v1/x4.png)
A new analysis of the quantum XY chain reveals how complex partition functions and Fisher zeros map out its exotic phase behavior and spectral properties.
![The study demonstrates that quasiparticle heating remains sustained over time within a narrow measurement bandwidth when [latex]\Delta_{q}[/latex] is tuned near [latex]2t\cos(q-p)-E_{b,q}[/latex] for [latex]q=2[/latex], suggesting a resonant condition maintains energy within the system.](https://arxiv.org/html/2602.05924v1/narrow_counting_heating.png)
New research demonstrates how the bandwidth of weak measurements can control the dynamics of particles and quasiparticles in a Bose-Einstein condensate array.
![The study identifies a series of avoided crossing points corresponding to quantum resonances-specifically 1:6, 2:14, 1:8, 2:18, and 1:10-and demonstrates that linear extrapolation of these points at [latex]\hbar=0[/latex] aligns with the bifurcation energies of corresponding classical resonances, suggesting a continuous transition between quantum and classical behavior despite inherent complexities in resonance phenomena.](https://arxiv.org/html/2602.04793v2/x5.png)
New research reveals a precise link between the predictable behavior of classical systems and the seemingly random world of quantum resonances.
New research maps the regions around rotating black holes where light becomes permanently trapped, revealing a surprising complexity in their structure.
A century after its inception, this review traces the fascinating history of Fermi-Dirac statistics and its profound impact on our understanding of the quantum world.
New research suggests that the boundaries between regions of dark matter may interact with electromagnetic fields, potentially leaving a detectable signature in the cosmic microwave background.
![The study demonstrates how varying potential functions-specifically even order polynomials, double Gaussians, and cosh functions-influence the probability distribution of synaptic input within double-well energy systems, with simulations under noise conditions [latex]K_n = 0.1[/latex], [latex]0.2[/latex], [latex]0.3[/latex], and [latex]0.4[/latex] revealing corresponding shifts in the extracted inverse temperature.](https://arxiv.org/html/2602.04014v1/Figure2.png)
New research reveals that even simple bistable systems exhibit predictable sampling behavior when initialized at their energy barrier, opening doors to novel computing architectures.
![The DUNE experiment’s sensitivity to mass ordering is demonstrably affected by supernova distance, with analyses across multiple channels (A, B, C, and their combination) revealing that the inclusion of neutrino entanglement-quantified by entanglement of formation-heightens this sensitivity, a relationship further modulated by variations in survival probability [latex]\Delta p[/latex].](https://arxiv.org/html/2602.04800v1/x38.png)
New research suggests quantum entanglement among neutrinos emitted from supernovae could significantly improve our ability to determine the fundamental ordering of neutrino masses.
Researchers have developed a flexible Python framework to streamline complex optical experiments on quantum materials, boosting reproducibility and data acquisition speed.