Gravitational baryogenesis

We show that a gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current dynamically breaks CPT in an expanding Universe and, combined with baryon-number-violating interactions, can drive the Universe towards an equilibrium baryon asymmetry that is...

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Veröffentlicht in:	Physical review letters 2004-11, Vol.93 (20), p.201301.1-201301.4, Article 201301
Hauptverfasser:	DAVOUDIASL, Hooman, KITANO, Ryuichiro, KRIBS, Graham D, MURAYAMA, Hitoshi, STEINHARDT, Paul J
Format:	Artikel
Sprache:	eng
Schlagworte:	72 Astronomy ASYMMETRY BARYON NUMBER baryon number, current baryon, production BARYONS Charge conjugation, parity, time reversal, and other discrete symmetries Cosmology Earth, ocean, space Exact sciences and technology General relativity and gravitation General theory of fields and particles Gravitation GRAVITATIONAL INTERACTIONS gravitino, production Gravity in more than four dimensions, kaluza-klein theory, unified field theories alternative theories of gravity numerical calculations Particle-theory and field-theory models of the early universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.) Physics SCALARS Stellar systems. Galactic and extragalactic objects and systems. The universe Symmetry and conservation laws The physics of elementary particles and fields UNIVERSE violation, CPT
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Zusammenfassung:	We show that a gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current dynamically breaks CPT in an expanding Universe and, combined with baryon-number-violating interactions, can drive the Universe towards an equilibrium baryon asymmetry that is observationally acceptable.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.93.201301