Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2116
Title: Non-gravitating scalars and spacetime compactification
Authors: Demir, Durmuş Ali
Puliçe, Beyhan
Keywords: Vacuum expectation value
Scalar field theory
Space-time
Compactifications
Issue Date: Jun-2006
Publisher: Elsevier Ltd.
Source: Demir, D.A., and Puliçe, B. (2006). Non-gravitating scalars and spacetime compactification. Physics Letters B: Nuclear, Elementary Particle and High-Energy Physics, 638(1), 1-7. doi:10.1016/j.physletb.2006.05.015
Abstract: We discuss role of partially gravitating scalar fields, scalar fields whose energy-momentum tensors vanish for a subset of dimensions, in dynamical compactification of a given set of dimensions. We show that the resulting spacetime exhibits a factorizable geometry consisting of usual four-dimensional spacetime with full Poincaré invariance times a manifold of extra dimensions whose size and shape are determined by the scalar field dynamics. Depending on the strength of its coupling to the curvature scalar, the vacuum expectation value (VEV) of the scalar field may or may not vanish. When its VEV is zero the higher-dimensional spacetime is completely flat and there is no compactification effect at all. On the other hand, when its VEV is nonzero the extra dimensions get spontaneously compactified. The compactification process is such that a bulk cosmological constant is utilized for curving the extra dimensions.
URI: http://doi.org/10.1016/j.physletb.2006.05.015
http://hdl.handle.net/11147/2116
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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