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A black and white (sort of sepia-toned, actually) photo of Helen Quinn standing at a blackboard. She is wearing a light colored cardigan sweater with a collared shirt or blouse underneath. Her left hand is holding a piece of chalk to the blackboard, but her head is turned and looking at the camera. She has short hair, dark eyes, and is smiling. The blackboard is covered in messy diagrams of what I assume are drawings of different possible potentials for the axion field.

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A black and white (sort of sepia-toned, actually) photo of Helen Quinn standing at a blackboard. She is wearing a light colored cardigan sweater with a collared shirt or blouse underneath. Her left hand is holding a piece of chalk to the blackboard, but her head is turned and looking at the camera. She has short hair, dark eyes, and is smiling. The blackboard is covered in messy diagrams of what I assume are drawings of different possible potentials for the axion field.
https://files.mastodon.social/media_attachments/files/110/395/647/646/659/161/original/a4166143f5dcabd3.jpeg

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Robert McNees (mcnees@mastodon.social)'s status on Friday, 19-May-2023 13:45:06 UTC Robert McNees

Physicist Helen Quinn was born #OTD in 1943. She is best known for Peccei-Quinn theory, a proposed explanation of the Strong CP problem of quantum chromodynamics.
Peccei-Quinn theory also implies the existence of a very light particle –the Axion– which is a pretty good dark matter candidate.
Image: H. Quinn/ @QuantaMagazine

In conversation Friday, 19-May-2023 13:45:06 UTC from mastodon.social permalink