It is shown that the gauge theory of relativistic 3-branes can be formulated in a conformally invariant way if the embedding space is six dimensional. The implementation of conformal invariance requires the use of a modified measure, independent of the metric in the action. Brane-world scenarios without the need of a cosmological constant in 6D are constructed. Thus, no “old” cosmological constant problem appears at this level.
Conformally invariant gauge theory of three-branes in 6-D and the cosmological constant / E. I., Guendelman; Spallucci, Euro. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - D70:(2004), pp. 026003-1-026003-9. [10.1103/PhysRevD.70.026003]
Conformally invariant gauge theory of three-branes in 6-D and the cosmological constant
SPALLUCCI, EURO
2004-01-01
Abstract
It is shown that the gauge theory of relativistic 3-branes can be formulated in a conformally invariant way if the embedding space is six dimensional. The implementation of conformal invariance requires the use of a modified measure, independent of the metric in the action. Brane-world scenarios without the need of a cosmological constant in 6D are constructed. Thus, no “old” cosmological constant problem appears at this level.Pubblicazioni consigliate
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