2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52582The quantum creation probability and entropy of a 2-codimensional braneworld are calculated in the framework of no-boundary universe. The entropy can take an arbitrarily large value as the brane tensions increase, in violation of the conjectured "N-bound" in quantum gravity, even for a 4-dimensional ordinary universe.11 pagesHigh Energy Physics - TheoryAstrophysicsGeneral Relativity and Quantum Cosmologytext