De Sitter braneworld and gravitational waves
نویسندگان
چکیده
We study the braneworld theory constructed by multi scalar fields. The model contains a smooth and infinitely large extra dimension, allowing background fields propagating in it. give de Sitter solution for four-dimensional cosmology as good approximation to early universe inflation. show that graviton has localizable massless mode, series of continuous massive modes, separated mass gap. There could be normalizable depending on solution. gravitational waves mode evolve same four dimensional theory, while modes greatly different from mode.
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ژورنال
عنوان ژورنال: Canadian Journal of Physics
سال: 2021
ISSN: ['0008-4204', '1208-6045']
DOI: https://doi.org/10.1139/cjp-2021-0266