Quantum Locks: A Phase-Based Approach to Secure Communication
![Wigner plots reveal that distinguishing between code states at Bob's end becomes increasingly difficult as the dimension [latex]M[/latex] increases from 6 to 32.](https://arxiv.org/html/2602.16489v1/bit=1_M=32.png)
A new quantum bit commitment protocol leverages phase encoding to offer practical security despite theoretical vulnerabilities to known attacks.
Science
Securing Anonymous Signatures in a Quantum World
New research provides rigorous security proofs for ring signature schemes crucial for privacy-preserving communication, fortifying them against attacks from future quantum computers.
Quantizing Dynamics: Taming Error in Real-World Models
New research provides robust statistical guarantees for quantized dynamical systems, bridging the gap between theory and practical applications with limited precision.
Keeping Solutions Positive: A New Approach to Numerical Stability
![The Robertson reaction system, modeled with a second-order single-step DIRK method and positivity correction applied to [latex]\mathbf{y}\_{n+1}[/latex], demonstrably maintains strictly non-negative values throughout its time evolution.](https://arxiv.org/html/2602.15271v1/x4.png)
Researchers have developed a novel time integration method that reliably maintains positivity and key invariants in simulations of dynamic systems.
When Moiré Materials Melt: A New View of Quantum Transitions
![The study demonstrates that resistivity, as a function of temperature, exhibits universal jumps-on the order of [latex]h/e^{2}[/latex]-at quantum critical points, as evidenced by the distinct behaviors of the fluid limit (blue) and the conformal fluid limit (black) compared to these critical regimes (red).](https://arxiv.org/html/2602.15334v1/fig/resi.png)
Researchers have mapped the electrical behavior of exotic materials at a critical point, revealing universal properties as they transition between distinct quantum states.
From Quarks to Mesons: Mapping Hadronization Pathways
![The study details the fragmentation functions-[latex]zD\_{u}^{m}(z)[/latex] and [latex]zD\_{s}^{m}(z)[/latex]-which delineate how up and strange quarks transform into charmed mesons, a process illustrating the inherent limitations of any attempt to fully chart particle decay pathways.](https://arxiv.org/html/2602.15694v1/x12.png)
New calculations offer a unified, Poincaré-covariant framework for understanding how quarks fragment into observable mesons, bridging theory with experimental data.
Stochastic Gates: A New Approach to Parallel Computing
Researchers have demonstrated functional XOR and XNOR logic gates built on classical noise, offering a potential pathway towards unconventional parallel computation.
Beyond the Singularity: Modeling Cosmic Rebirth with Quantum Gravity
![The model demonstrates how the areal radius evolves over time for a mass of [latex]5M[/latex], exhibiting distinct trajectories in symmetric (red) and asymmetric (blue) bounce scenarios, and further clarifies this relationship through a parametric connection between time and a designated parameter η.](https://arxiv.org/html/2602.15227v1/x2.png)
New research explores how loop quantum gravity can offer a viable mechanism to replace the crushing singularity at the heart of collapsing stars with a ‘bounce’ into a new phase of spacetime.
Unlocking Nuclear Forces: A New Approach to Scattering Calculations
![The nucleon analyzing power, measured across a spectrum of incident energies - including 3.0, 10.0, 14.1, 21.0, and 67.0 MeV for neutron-deuteron scattering and 35.0 MeV for proton-deuteron interactions - demonstrates the sensitivity of nuclear forces to subtle changes in energy, as evidenced by data compiled from multiple scattering experiments [22, 13, 31, 3, 41].](https://arxiv.org/html/2602.15453v1/x25.png)
Researchers have developed a robust framework for calculating nucleon-deuteron scattering using chiral effective field theory, pushing the boundaries of our understanding of nuclear interactions.
Can AI Write Secure Code? A New Benchmark Puts LLMs to the Test
A rigorous new evaluation framework is challenging large language models to generate code that isn’t just functional, but also resilient against real-world vulnerabilities.