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Science

A new calculation of the electron’s self-energy improves determination of fundamental constants

Feynman diagrams [(a) loop-after-loop, (b) overlapping, (c) nested] representing the two-loop electron self-energy. The double line denotes the electron in the presence of the binding nuclear field; the wavy line denotes the exchange of a virtual photon. Credit: Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.133.251803 When quantum electrodynamics, the quantum field theory of electrons and photons, […]

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Politics

Nancy Mace Said She Was Pro Trans Rights, Compassion Was ‘Fundamental’… Last Year

Rep. Nancy Mace (R-S.C.) said last year she was “pro-transgender rights” and said compassion was “fundamental” to her politics, comments that stand dramatically different to her current crusade against a future colleague who made history when she was elected as the first trans member of Congress earlier this month. Mace spoke to CBS News’ Major […]

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Science

Physicists tame fundamental muon particles into highly controlled beam for first time

A worker at the Neutrino Experimental Facility at the Japan Proton Accelerator Research Complex (J-PARC) in Tokai.Credit: Dai Kurokawa/EPA/Shutterstock For the first time, researchers have accelerated muons — the heavier, unstable cousins of electrons — into a tightly controlled beam, bringing the vision of a muon collider a step closer to reality. A team at […]

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