Pre-inflation from the multiverse: can it solve the quadrupole problem in the cosmic microwave background?João Morais, Mariam Bouhmadi-López, Manuel Krämer and Salvador Robles-PérezEur. Phys. J. C, 78 3 (2018) 240DOI: https://doi.org/10.1140/epjc/s10052-018-5698-z