Conflict between the classical equivalence principle and quantum mechanics

Autor: Accioly, Antonio [UNESP], Paszko, Ricardo
Přispěvatelé: Centro Brasileiro de Pesquisas Físicas (CBPF), Universidade Estadual Paulista (Unesp)
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Popis: Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:23:54Z No. of bitstreams: 0 Made available in DSpace on 2014-05-27T11:23:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-05-11 As far as external gravitational fields described by Newton's theory are concerned, theory shows that there is an unavoidable conflict between the universality of free fall (Galileo's equivalence principle) and quantum mechanics - a result confirmed by experiment. Is this conflict due perhaps to the use of Newton's gravity, instead of general relativity, in the analysis of the external gravitational field? The response is negative. To show this we compute the low corrections to the cross-section for the scattering of different quantum particles by an external gravitational field, treated as an external field, in the framework of Einstein's linearized gravity. To first order the cross-sections are spin-dependent; if the calculations are pushed to the next order they become dependent upon energy as well. Therefore, the Galileo's equivalence and, consequently, the classical equivalence principle, is violated in both cases. We address these issues here. Group of Field Theory from First Principles Centro Brasileiro de Pesquisas Físicas CBPF, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro, RJ Laboratório de Física Experimental LAFEX Centro Brasileiro de Pesquisas Físicas CBPF, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro, RJ Instituto de Física Téorica IFT São Paulo State University UNESP, Rua Pamplona 145, 01405-000 São Paulo, SP Instituto de Física Téorica IFT São Paulo State University UNESP, Rua Pamplona 145, 01405-000 São Paulo, SP
Databáze: OpenAIRE
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