Islands in multiverse models
Keyword(s):
Abstract We consider multiverse models in two-dimensional linear dilaton-gravity theories as toy models of false vacuum eternal inflation. Coupling conformal matter we calculate the Von Neumann entropy of subregions. When these are sufficiently large we find that an island develops covering most of the rest of the multiverse, leading to a Page-like transition. This resonates with a description of multiverse models in semiclassical quantum cosmology, where a measure for local predictions is given by saddle point geometries which coarse-grain over any structure associated with eternal inflation beyond one’s patch.
2009 ◽
Vol 07
(05)
◽
pp. 959-968
Keyword(s):
1994 ◽
Vol 11
(5)
◽
pp. 1243-1253
◽
2008 ◽
Vol 17
(13n14)
◽
pp. 2501-2505
◽
Keyword(s):
Keyword(s):
2020 ◽
Vol 24
(04)
◽
pp. 880-887
Keyword(s):
2008 ◽
Vol 23
(02)
◽
pp. 91-98
◽
Keyword(s):