Quantum Shadows: Untangling Correlations in Baryon Decays
![The decay pathways of [latex]J/\psi[/latex] particles into [latex]\gamma\chi_{cJ}[/latex] and subsequent decay of [latex]\chi_{cJ}[/latex] into [latex]B\bar{B}[/latex] mesons demonstrate a fundamental process in particle physics, revealing how heavier particles disintegrate into lighter constituents through the emission of photons and the creation of meson-antimeson pairs.](https://arxiv.org/html/2512.22837v1/x1.png)
A new theoretical study explores the surprising quantum entanglement present when exotic charmonium particles decay into pairs of baryons and antibaryons.
Science
Twisted Currents: Engineering Anomalous Transport in 2D Materials
![Diffraction patterns emerge not as evidence of a system’s control, but as inevitable consequences of wave interference, demonstrating that any attempt to define a precise boundary between wave and void will always yield probabilistic echoes rather than definitive edges, as described by the principle of Huygens-Fresnel [latex] E(r) = \in t_{S} K(\mathbf{r}, \mathbf{r'}) E(\mathbf{r'}) dS [/latex].](https://arxiv.org/html/2512.22155v1/images/diffraction-experiment.png)
New research explores how broken symmetry in honeycomb lattices can mimic exotic phenomena like the Chiral Magnetic Effect, opening doors to control and observe anomalous transport in solid-state systems.
Unveiling Quantum Secrets Through Imaginary Time
![Entanglement entropy in periodically bounded lattices grows linearly with imaginary time τ, driven by contributions localized at corners-specifically, those forming [latex]\frac{\pi}{3}[/latex] and [latex]\frac{2\pi}{3}[/latex] angles-within regions possessing equivalent boundary lengths, despite differing geometries-such as a [latex]\frac{L}{3} \times \frac{2L}{3}[/latex] area contrasted with a [latex]\frac{L}{3} \times L[/latex] one.](https://arxiv.org/html/2512.23361v1/x1.png)
New research reveals a powerful method for probing universal entanglement properties in complex quantum systems using a unique ‘imaginary time’ approach.
Beyond the Equation: Reconciling Quantum Theory with Reality
A new perspective argues that bridging the gap between quantum predictions and experimental results demands careful consideration of the practical limitations and assumptions inherent in actual physical measurements.
Super-Resolution Sensing with Quantum Magnons
Researchers demonstrate a novel approach to achieving Heisenberg-limited precision in parameter estimation by harnessing the dynamics of squeezed magnons following a carefully controlled quantum quench.
Taming the Gauge Problem with Quantum Computers
![The squared ground-state wave function, [latex]|\psi\_{\rm g.s.}(x\_{1},x\_{2})|^{2}[/latex], is visualized with parameters set to [latex]m=40[/latex], [latex]R=2[/latex], and [latex]\Lambda=32,64[/latex], demonstrating the spatial distribution of probability density for the system’s fundamental state.](https://arxiv.org/html/2512.22932v1/heatmap_64.png)
Researchers have developed a complete framework for simulating complex quantum systems governed by non-Abelian gauge theories, paving the way for more accurate modeling of fundamental physics.
Shining New Light on Quantum Control
![The emergence of nonclassical light in high-order harmonic generation is demonstrated to arise not from the dipole moment itself, but from its nonlinear dependence on the driving field-specifically, a transition from nearly coherent states with constant dipole moments, to squeezed states with linear dependence, and ultimately to states exhibiting negative values in the Wigner function indicative of nonclassicality when the dipole moment contains terms quadratic in the field Ω at the 13th harmonic-given initial conditions of a product state between light and a hydrogen atom in superposition, and laser parameters of [latex]\lambda = 2227[/latex] nm, [latex]T_p = 6[/latex] cycles, and [latex]I = 1 \cdot 10^{13} \text{W/cm}^2[/latex], with a quantization parameter of [latex]\beta = 0.41 \text{au}[/latex].](https://arxiv.org/html/2512.23156v1/x1.png)
A new theoretical framework details how intense lasers can sculpt quantum systems to produce bright, tunable sources of nonclassical light.
Tuning Quantum Sensors with Topological States
![The study demonstrates a quantifiable fidelity-expressed as the Quantum Fisher Information [latex]\mathcal{F}_{Q}[/latex] and the bulk-edge energy gap [latex]\Delta E[/latex]-that scales with system size and particle number as [latex]\mathcal{F}_{Q}\propto N^{2}L^{2p}[/latex], where <i>p</i> represents the order of band touching, revealing how even the most precise measurements are ultimately bound by the fundamental properties of the system under investigation and susceptible to vanishing beyond a critical threshold.](https://arxiv.org/html/2512.23168v1/x2.png)
New research reveals how precisely controlling the edge states of topological materials can dramatically boost the sensitivity of quantum measurement devices.
Uncloaking Hidden Dimensions with Confined Quantum Particles
New research demonstrates how a carefully tuned electric field can split the energy levels of a quantum particle confined to a cylindrical surface, potentially revealing the existence of extra spatial dimensions.
Sharper Eyes on Entanglement: New Criteria for Quantum Separability
![The derived function [latex] f_{2}(p) [/latex], substantiated by Corollary 1 and visually represented by a solid red line, aligns with the function [latex] g_{2}(p) [/latex] detailed in Corollary 11 of Lu2025 (dashed blue line), demonstrating a consistent mathematical relationship between these correlated elements.](https://arxiv.org/html/2512.22514v1/x3.png)
A new study introduces refined methods for detecting entanglement in quantum systems, pushing the boundaries of what’s observable.