IFIMAR   20926
INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
artículos
Título:
Dirac equation in a de Sitter expansion for massive neutrinos from modern Kaluza?Klein theory
Autor/es:
PABLO ALEJANDRO SÁNCHEZ; MARIANO ANABITARTE; MAURICIO BELLINI
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 709 p. 535 - 535
ISSN:
0370-2693
Resumen:
Using the modern Kaluza?Klein theory of gravity (or the Induced Matter theory), we study the Diracequation for massive neutrinos on a de Sitter background metric from a 5D Riemann-flat (and henceRicci-flat) extended de Sitter metric, on which is defined the vacuum for test massless 1/2-spin neutralfields minimally coupled to gravity and free of any other interactions. We obtain that the effective 4Dmasses of the neutrinos can only take three possible values, which are related to the (static) foliation of the fifth and noncompact extra dimension.
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