De Sitter brane gravity: from close-up to panorama
نویسندگان
چکیده
منابع مشابه
de Sitter Brane Gravity: from Close-Up to Panorama
We find explicitly the induced graviton propagator on de Sitter branes embedded in various five-dimensional spacetimes; de Sitter branes in AdS and Minkowski space are particular cases. By studying the structure of the momentum-space propagator, we are able to extract interesting physics, much of which is qualitatively different from that of flat branes. We find that 1) there can be a set of gr...
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We consider a single brane embedded in five dimensions with vanishing and positive bulk cosmological constant. In this setup, the existence of dS4 brane is allowed. We explore the gravitational fluctuations on the brane, and we point out that the usual four-dimensional gravity can be reproduced by a normalizable zero mode and that the continuous massive modes are separated by a mass gap from ze...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2001
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(01)00233-7