TY - JOUR
T1 - Bubble dynamics and space-time structure in extended inflation
AU - Sakai, Nobuyuki
AU - Maeda, Kei Ichi
PY - 1993/1/1
Y1 - 1993/1/1
N2 - Developing a thin-wall formalism, we study the evolution of bubbles in extended inflation. We find the following two results. (1) Any true vacuum bubble expands, contrary to the results of Goldwirth and Zaglauer, who claim that bubbles created initially later collapse. We show that their initial conditions for collapsing bubbles are physically inconsistent. (2) Concerning the global space-time structure of the Universe in extended inflation, we show that wormholes are produced as in old inflation, resulting in the multiproduction of universes.
AB - Developing a thin-wall formalism, we study the evolution of bubbles in extended inflation. We find the following two results. (1) Any true vacuum bubble expands, contrary to the results of Goldwirth and Zaglauer, who claim that bubbles created initially later collapse. We show that their initial conditions for collapsing bubbles are physically inconsistent. (2) Concerning the global space-time structure of the Universe in extended inflation, we show that wormholes are produced as in old inflation, resulting in the multiproduction of universes.
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U2 - 10.1103/PhysRevD.48.5570
DO - 10.1103/PhysRevD.48.5570
M3 - Article
AN - SCOPUS:4243942649
SN - 1550-7998
VL - 48
SP - 5570
EP - 5575
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 12
ER -