2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33772We consider ``brane universe'' with nonzero tension in the models with large extra dimensions. We find exact solutions of higher-dimensional Einstein equations with single flat Minkowsky brane of arbitrary large tension (or brane cosmological constant) and compact extra dimensions. The brane curves the bulk space-time in a small region around it. There is no fine tuning of energy scales in our model.10 pages, 1 figureGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext