We discuss some issues arising in studying (linearized) gravity on non-BPS higher codimension branes in an infinite-volume bulk. In particular, such backgrounds are badly singular for codimension-3 and higher delta-function-like branes with non-zero tension. As we discuss in this note, non-trivial issues arise in smoothing out such singularities. Thus, adding higher curvature terms might be necessary in this context.
A remark on smoothing out higher codimension branes / Corradini, Olindo; Iglesias, Alberto; Kakushadze, Zurab; Langfelder, Peter. - In: MODERN PHYSICS LETTERS A. - ISSN 0217-7323. - A17 (2002):(2002), pp. 795-801. [10.1142/S0217732302006904]
A remark on smoothing out higher codimension branes
CORRADINI, Olindo;
2002
Abstract
We discuss some issues arising in studying (linearized) gravity on non-BPS higher codimension branes in an infinite-volume bulk. In particular, such backgrounds are badly singular for codimension-3 and higher delta-function-like branes with non-zero tension. As we discuss in this note, non-trivial issues arise in smoothing out such singularities. Thus, adding higher curvature terms might be necessary in this context.
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