Olivier Costa de Beauregard, Date of Birth, Place of Birth, Date of Death
TweetOlivier Costa de Beauregard
French physicist
Date of Birth: 
Place of Birth: Paris, Île-de-France, France
About Olivier Costa de Beauregard
- Olivier Costa de Beauregard (Paris, 6 November 1911 – Poitiers, 5 February 2007) was a French relativistic and quantum physicist, and philosopher of science.
- He was an eminent specialist of time and of information theory.
- He studied under Louis de Broglie. From 1947, he proposed to de Broglie his interpretation of the EPR paradox which questions the notion of time.
- In 1974, with Bernard d'Espagnat, he suggested to Christian Imbert, a young professor at Institut d'Optique, to propose to Alain Aspect to perform a Bell's inequalities experimental test, to settle the conflict between the results of Clauser and Freedman at Berkeley, and Holt and Pipkin at Harvard.
- After Aspect decided to do a different experiment, he explained the quantum mechanical predictions by the theory of retrocausation or CPT-invariance. His numerous publications also concerned the inertial effect of spin, the Imbert effect, Fresnel evanescent wave of Fresnel, and Dirac equation.
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