The hole wide multiverse

• Autores: Anil Ananthaswamy
• Localización: New scientist, ISSN 0262-4079, Nº. 3055, 2016, pág. 8
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Cosmologist have suggested that bubbles colliding with the universe could have left imprints in the cosmic microwave background, the leftover radiation of the big bang. However, such a signal would be very faint, and no conclusive evidence has yet been seen. Alex Vilenkin of Tufts University and his colleagues wondered if they could spot signs of the multiverse elsewhere in the universe. To investigate, they did a mathematical analysis of the fate of the bubbles formed during inflation. They found that bubbles that form with an internal inherent energy lower than the inherent energy in the inflating universe will indeed begin to expand: the tension of space-time outside the bubble is greater than that inside, so the bubble walls are pulled outwards