Quantum mechanics versus equivalence principle
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Undergraduate course
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Amer Physical Soc
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Article
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Acesso aberto
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Abstract
We consider the scattering of a photon by a weak gravitational field, treated as an external field, up to second order of the perturbation expansion. The resulting cross section is energy dependent which indicates a violation of Galileo's equivalence principle (universality of free fall) and, consequently, of the classical equivalence principle. The deflection angle theta for a photon passing by the sun is evaluated afterward and the likelihood of detecting Delta theta/theta(E) theta-theta(E)/theta(E) (where theta(E) is the value predicted by Einstein's geometrical theory for the light bending) in the foreseeable future, is discussed.
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English
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Physical Review D. College Pk: Amer Physical Soc, v. 78, n. 6, p. 6, 2008.
