Teorema CPT

O teorema CPT é o princípio segundo o qual os sistemas físicos são invariantes para transformações que envolvem, concomitantemente, as operações de inversão da carga , inversão de paridade e inversão do tempo .[1] É uma simetria de qualquer interação que, sob as três transformações todas as leis físicas terão de ser invariantes.[2][3][4][5]

O teorema CPT foi originalmente sugerido por Julian Schwinger em 1951, e uma derivação mais robusta foi proposta por Gerhard Lüders e Wolfgang Pauli em 1954.

História

Na década de 50, pesquisas revelaram a violação da simetria para alguns fenômenos que envolvem os campos da força nuclear fraca (não são bem conhecidas as violações de simetria e ). Por um tempo curto, acreditava-se que a simetria CP combinada era preservado por todos os fenômenos físicos, mas descobriu-se mais tarde, também esta também fora violada. Existe um teorema que deriva preservar a simetria CPT para todos os fenômenos físicos, assumindo a correção das leis da mecânica quântica. Essa simetria é reconhecida como uma propriedade fundamental das leis da física.[3][6][5]

Referências

  1. ↑ Charlie Freund e Nick Morris, Curiosities of Antimatter [https://archive.is/20121210125142/http://www.cem.msu.edu/~cem181fp/antimatter/antimatter.html Arquivado em 2012-12-10 na Archive.today [em linha]]
  2. ↑ Antonio Ferrer Soria, Física nuclear y de partículas (2a ed.), Universitat de València, 2011 ISBN 8-437-08656-6 (em castelhano)
  3. ↑ a b Domingo Agustín Vázquez, Diccionario de ciencias, Editorial Complutense, 2000 ISBN 8-489-78480-9
  4. ↑ Fermi National Accelerator Laboratory Kaons at the Tevatron (em inglês)
  5. ↑ a b Simetría CPT, Historia, Derivación, Consecuencias e implicacione (em castelhano)
  6. ↑ Uma Década em Busca da Simetria da Natureza

Bibliografia

  1. Gabriel Chardin, La Antimateria, Siglo XXI, 2001 ISBN 9-682-32342-8 (em castelhano)
  2. Antonio Ferrer Soria, Eduardo Ros Martínez, Física de partículas y de astropartículas, Universitat de València, 2005 ISBN 8-437-06180-6 (em castelhano)
  3. Frauenfelder, Hans, Subatomic physics, 2nd ed. - Englewood Cliffs, N.J. : Prentice Hall, c1991. ISBN 0-138-59430-9 (em inglês)
  4. J. Thanh Van Tran, '93 Electroweak Interactions and Unified Theories: Proceedings of the XXVIIIth Rencontre de Moriond, Series: Moriond Particle Physics Meetings : Les Arcs, Savoie, France, March 13-20, 1993, Volume 28,Edição 2, Atlantica Séguier Frontières, 1993, ISBN 2-863-32137-4 (em inglês)
  5. Theory Overview of Testing Fundamental Symmetries (em inglês)
  6. Asimov, Isaac (2005). El electrón es zurdo y otros ensayos científicos. Alianza.
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