Elementary Particles and Fields

Physics of Atomic Nuclei

, Volume 73, Issue 4, pp 588-592

First online:

CPT violation and particle-antiparticle asymmetry in cosmology

  • A. D. DolgovAffiliated withDipartimento di Fisica, Università degli Studi di FerraraIstituto Nazionale di Fisica Nucleare, Sezione di FerraraInstitute of Theoretical and Experimental Physics Email author 

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General features of generation of the cosmological charge asymmetry in CPT noninvariant world are discussed. If the effects of CPT violationmanifest themselves only inmass differences of particles and antiparticles, the baryon asymmetry of the Universe hardly can be explained solely by breaking of CPT invariance. However, CPT noninvariant theories may lead to a new effect of distorting the usual equilibrium distributions. If this takes place, CPT violation may explain the baryon asymmetry of the Universe.