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7 papers · 2 filters
Neutrino mixing and mass hierarchy in Gaussian landscapes
Lawrence J. Hall, Michael P. Salem, Taizan Watari
The flavor structure of the Standard Model may arise from random selection on a landscape. In a class of simple models, called "Gaussian landscapes," Yukawa couplings derive from o…
Skyrme Branes
Jose J. Blanco-Pillado, Handhika S. Ramadhan, Noriko Shiiki
We obtain static selfgravitating solitonic 3-brane solutions in the Einstein-Skyrme model in 7D. These solitons correspond to a smooth version of the previously discussed cosmic p-…
Holographic Multiverse
J. Garriga, A. Vilenkin
We explore the idea that the dynamics of the inflationary multiverse is encoded in its future boundary, where it is described by a lower dimensional theory which is conformally inv…
Boltzmann brains and the scale-factor cutoff measure of the multiverse
Andrea De Simone, Alan H. Guth, Andrei Linde +3
To make predictions for an eternally inflating "multiverse", one must adopt a procedure for regulating its divergent spacetime volume. Recently, a new test of such spacetime measur…
Predicting the cosmological constant with the scale-factor cutoff measure
Andrea De Simone, Alan H. Guth, Michael P. Salem +1
It is well known that anthropic selection from a landscape with a flat prior distribution of cosmological constant Lambda gives a reasonable fit to observation. However, a realisti…
Anthropic prediction for a large multi-jump landscape
Delia Schwartz-Perlov
The assumption of a flat prior distribution plays a critical role in the anthropic prediction of the cosmological constant. In a previous paper we analytically calculated the distr…