Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2197
Title: A symmetry for vanishing cosmological constant: Another realization
Authors: Erdem, Recai
Keywords: Space-time
Symmetry principle
Cosmological constant
Dimensions
Issue Date: Aug-2006
Publisher: Elsevier Ltd.
Source: Erdem, R. (2006). A symmetry for vanishing cosmological constant: Another realization. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 639(3-4), 348-353. doi:10.1016/j.physletb.2006.06.056
Abstract: A more conventional realization of a symmetry which had been proposed towards the solution of cosmological constant problem is considered. In this study the multiplication of the coordinates by the imaginary number i in the literature is replaced by the multiplication of the metric tensor by minus one. This realization of the symmetry as well forbids a bulk cosmological constant and selects out 2 (2 n + 1)-dimensional spaces. On contrary to its previous realization the symmetry, without any need for its extension, also forbids a possible cosmological constant term which may arise from the extra-dimensional curvature scalar provided that the space is taken as the union of two 2 (2 n + 1)-dimensional spaces where the usual 4-dimensional space lies at the intersection of these spaces. It is shown that this symmetry may be realized through space-time reflections that change the sign of the volume element. A possible relation of this symmetry to the E-parity symmetry of Linde is also pointed out.
URI: http://doi.org/10.1016/j.physletb.2006.06.056
http://hdl.handle.net/11147/2197
ISSN: 0370-2693
0370-2693
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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