Twisted Superconductivity: How Quantum Geometry Shapes Pairing
New research reveals that the curvature of electronic bands can fundamentally alter superconducting behavior, leading to a cascade of chiral states with observable consequences.
Science
Beyond the Edge: New Correlations at Quantum Critical Points
![For neural networks exceeding a critical size [latex]N\geq N\_{\mathrm{crit}}[/latex], the transition boundary between a deconfined quantum spin Hall state and superconductivity is hypothesized to host a unique phase characterized by extraordinary-log correlations at [latex]q\approx N/4[/latex], where boundary fermions couple to bulk gauge fluctuations and an unstable [latex]\mathrm{PSU}(N)=\mathrm{SU}(N)/\mathbb{Z}\_{N}[/latex] order parameter ultimately evolves towards a conventional boundary phase at larger network sizes.](https://arxiv.org/html/2601.07923v1/boundary-phases.png)
Researchers have discovered a novel class of quantum behavior at the boundary between distinct quantum phases, revealing unexpected correlations that scale with the complexity of the underlying physics.
Beyond the Blink: Harnessing Electron Pathways as Quantum Bits
New research reveals that coherent interference in strong-field physics can create effective two-level quantum systems, dubbed ‘attosecond path qubits’, opening avenues for unprecedented control over electron dynamics.
Unraveling Quantum Chaos in String Fragmentation
![The study of string breaking reveals a peak in entanglement entropy, antiflatness, and a quantifiable upper bound on nonlocality [latex]\mathcal{M}_{2}[/latex] at a separation of 46.5 spatial sites, suggesting a critical distance where quantum complexity reaches its maximum within the system, despite the inevitable decay inherent in all physical configurations.](https://arxiv.org/html/2601.08825v1/x3.png)
New research delves into the quantum dynamics of string breaking, offering a fresh perspective on how particles emerge from the fundamental forces of nature.
Quantum Spacetime and the Mirage of Modified Gravity
![The stabilized modes exhibit kinetic action proportional to the expression [latex]\big((-k\_{0}^{2}+\vec{k}^{2})(k\_{0}^{2}-\vec{k}^{2}/5+0.1)-0.015+0.355k\_{0}^{2}\big)[/latex], indicating a complex interplay between initial and propagated wave vectors, modulated by constants that define the system’s inherent stability and responsiveness.](https://arxiv.org/html/2601.08031v1/x5.png)
New research explores how the fundamental structure of spacetime, as described by the IKKT matrix model, can give rise to apparent modifications of gravity at cosmic scales.
Knowing the Future: Quantum Mechanics and the Direction of Time
A new theory proposes that quantum speedup arises from a retrocausal mechanism, suggesting that future outcomes can influence present processes.
Quantum Superposition Stands Firm: A Critical Look at Proposed Alternatives
A new analysis challenges a recent attempt to redefine quantum superposition using Möbius transformations, finding it either equivalent to standard quantum mechanics or fundamentally inconsistent.
Mapping the Cosmos: Unlocking Neutron Star Secrets with Machine Learning
![The analysis of proton fraction ([latex]X_p[/latex]) contributions, delineated between the NL and NL-hyp models as detailed in Table 1, demonstrates how saturation properties disproportionately influence nuclear behavior, suggesting these properties are not merely a detail of the model, but a fundamental aspect of the system being represented.](https://arxiv.org/html/2601.07727v1/Nmps-xp-hyp.png)
Researchers are employing symbolic regression to decipher the complex connections between the fundamental properties of nuclear matter and the observable characteristics of neutron stars.
Beyond the θ Term: Rethinking the Strong CP Problem
A new perspective challenges conventional thinking about CP violation in quantum chromodynamics, suggesting the issue stems from unstated assumptions about gauge field behavior.
Beyond Einstein: Coupling Matter to Exotic Gravity
A new analysis explores how matter interacts with a particularly complex form of gravity, revealing crucial consistency conditions for its holographic properties.