Tag: #physics

Preprint reports operation of thorium-229 nuclear clock locked to nuclear transition in crystal

A June 7 arXiv preprint claims operation of a thorium-229 nuclear clock by locking a 148.4 nm VUV laser to a nuclear transition in a thorium-doped crystal.

#physics, #nuclearclock, #thorium229, #precisionmeasurement

One‑Positron Quantum Cyclotron Demonstrated, Paving Way for More Precise Positron g‑Factor Tests

A Northwestern-led preprint reports trapping a single positron in a quantum cyclotron — a technical step toward higher‑precision tests of the positron’s magnetic moment and CPT symmetry.

#physics, #antimatter, #particlephysics, #precision

Preprint: Kaonic-fluorine test finds QED holds in atomic fields above Schwinger limit

SIDDHARTA-2 preprint reports x-ray measurements from kaonic fluorine match Dirac-Fock QED predictions in atomic fields exceeding the Schwinger limit.

#physics, #qed, #kaons, #atomic-physics

Scientists Break 33-Year Ambient-Pressure Superconductivity Record, Map Push Toward Room Temperature

Two PNAS papers report 151 K superconductivity at normal pressure via pressure quenching—and propose a coordinated roadmap to reach room-temperature materials.

#superconductivity, #materials, #physics, #pnas, #quantum