Physics

Researchers have developed the most accurate atomic clock ever built, according to a new report. The advance pushes timekeeping precision beyond existing standards, a field where even tiny improvements matter for GPS navigation, telecommunications, and tests of fundamental physics such as whether fundamental constants change over time. Details of the clock's design and measured accuracy have drawn attention from the scientific community.

New research reported by Quanta Magazine suggests gravity behaves in a holographic way, capable of collapsing the dimensions of space itself. Physicists say the finding supports the idea that three-dimensional reality could be encoded on a lower-dimensional surface, but they do not yet understand what this means for the nature of reality. The work is being discussed as a potentially major step in quantum gravity research.

French technology groups Thales and Bull are joining forces with the Alternative Energies and Atomic Energy Commission (CEA) to develop quantum computing software for the French military. The partnership, reported by Clubic, links France's defence electronics giant, its computer maker and the state research body around software for future quantum computers, with implications for national defence capabilities.

Researchers have refined a key early-universe measurement to record precision, according to a new report. The improved figure concerns fundamental cosmology, potentially sharpening scientists' understanding of conditions shortly after the Big Bang. Details of the method and its implications for existing cosmological models were not immediately available, but the finding is being discussed as a notable technical achievement in physics.

An AI system has set a new benchmark by independently calculating a 9-loop quantum physics amplitude, far exceeding the previous human record. Most real-world calculations in perturbative physics stop at 2 or 3 loops because the complexity grows explosively, so a machine handling 9 loops marks a major step for AI-assisted theoretical physics.

Thales, Bull and the CEA are working together on software for quantum computers intended for the French armed forces, according to a report by Clubic. The partnership ties France's major industrial and research players to a defence application of quantum computing, a field where states are racing to build both hardware and the specialised software needed to run it.

Digital certificate authority DigiCert has launched Quantum Central, a new initiative aimed at helping organisations prepare for post-quantum cryptography. The offering is designed to guide businesses through the transition to encryption standards that can withstand attacks from future quantum computers, a growing concern as quantum computing capabilities advance and governments push for migration away from vulnerable algorithms.

Sebastian Hassinger, host of The New Quantum Era podcast, argues that neutral atom platforms currently lead the race in quantum computing qubit technology. The commentary points to the momentum behind neutral atom approaches among competing hardware modalities such as superconducting circuits and trapped ions, while noting that leadership could shift as quantum computing technologies continue to mature.

Instruct3D has launched Additive Build Intelligence, a new software platform aimed at metal additive manufacturing. The platform is designed to bring data-driven intelligence to metal 3D printing build processes, helping manufacturers monitor and optimise production. Details on pricing, availability and early customers have not yet been reported, but the launch adds to a growing wave of software tools targeting industrial metal AM workflows.

Anthropic's Claude AI has reportedly beaten a long-standing computational record by Lance Dixon, calculating a nine-loop scattering amplitude in quantum field theory. The result, shared by researcher Pasquale Pillitteri, suggests AI systems can now handle symbolic calculations in theoretical physics that were previously out of reach for both humans and software, prompting discussion about AI's role in advanced physics research.

Quanta Magazine reports that although biology itself may not rely on quantum effects, the mathematics used to describe biological systems closely resembles quantum formalism. Researchers are applying quantum-like mathematical frameworks to model biological processes, suggesting deep structural parallels between the two fields even where physical quantum effects are absent.

Reports describe a single photon that traveled roughly 2 billion light-years before reaching Earth, a journey that current physics supposedly says should not have been possible. The claim is circulating widely, but no specific observatory, source event, or research team has been named, so the finding's details and significance remain unverified.

Scientists have deployed a system of 18 neutrino detectors near a nuclear reactor to study rare neutrino interactions with unprecedented sensitivity. Reactors produce vast numbers of antineutrinos, making them ideal sources for studying coherent elastic neutrino-nucleus scattering and hunting for physics beyond the Standard Model. The multi-detector design helps reduce background noise and systematic errors. Physics observers are following the results closely, as any deviation from expectations could hint at new particles or forces.

Scientists are examining the inner workings of Antarctic fish cells to understand how these animals survive in water barely above freezing. The research aims to reveal the biological mechanisms, likely involving specialized proteins or cellular adaptations, that keep their bodies functioning in conditions that would freeze most fish. The findings could inform broader work on cold tolerance in biology.

Anthropic claims its Claude AI model computed a nine-loop particle physics amplitude, an extraordinarily complex calculation in quantum field theory that would normally demand enormous effort from human physicists. If verified, the result would mark a striking demonstration of AI capabilities in theoretical physics, and it is prompting debate among researchers about how the computation was performed and whether it can be independently confirmed.