De Sitter braneworld and gravitational waves
Keyword(s):
Mass Gap
◽
We study the braneworld theory constructed by multi scalar fields. The model contains a smooth and infinitely large extra dimension, allowing the background fields propagating in it. We give a de Sitter solution for the four-dimensional cosmology as a good approximation to the early universe inflation. We show that the graviton has a localizable massless mode, and a series of continuous massive modes, separated by a mass gap. There could be a normalizable massive mode, depending on the background solution. The gravitational waves of massless mode evolve the same as the four dimensional theory, while that of the massive modes evolve greatly different from the massless mode.
Keyword(s):
Keyword(s):
Keyword(s):
2009 ◽
Vol 06
(02)
◽
pp. 367-368
Keyword(s):
2013 ◽
Vol 73
(10)
◽
1989 ◽
Vol 04
(11)
◽
pp. 1033-1041
◽
Keyword(s):
2017 ◽
Vol 26
(14)
◽
pp. 1750168
2013 ◽
Vol 28
(18)
◽
pp. 1350084
◽
Keyword(s):
2007 ◽
Vol 46
(10)
◽
pp. 2617-2625
◽
Keyword(s):