Brane worlds: the gravity of escaping matter
نویسندگان
چکیده
منابع مشابه
Brane worlds: the gravity of escaping matter
In the framework of a five-dimensional model with one 3-brane and an infinite extra dimension, we discuss a process in which matter escapes from the brane and propagates into the bulk to arbitrarily large distances. An example is a decay of a particle of mass 2m residing on the brane into two particles of mass m that leave the brane and accelerate away. We calculate, in the linearized theory, t...
متن کاملSelf-gravity of Brane Worlds: A New Hierarchy Twist
We examine the inclusion of brane self-gravity in brane-world scenarios with three or more compact extra dimensions. If the brane is a thin, localized one, then we find that the geometry in its vicinity is warped in such a way that gravity on the brane can become very weak, independently of the volume of the extra dimensions. As a consequence, self-gravity can make the brane structure enter int...
متن کاملArtifact Dark Matter from Unified Brane Gravity
Adopting Dirac’s brane variation prescription, the energy-momentum tensor of a brane gets supplemented by a geometrical (embedding originated) dark component. While the masslessness of the graviton is preserved, and the Newton force law is recovered, the corresponding Newton constant is necessarily lower than the one which governs FRW cosmology. This has the potential to puzzle out cosmological...
متن کاملGravity in higher codimension de Sitter Brane Worlds
We study solutions of Einstein’s equations corresponding codimension n > 2 global topological defects with de Sitter slices. We analyze a class of solutions that are cylindrically symmetric and admit positive, negative or zero Bulk cosmological constant. We derive the relevant graviton equations. For an extended brane, the properties of the solution depend on appropriate boundary conditions tha...
متن کاملInduced gravity on intersecting brane-worlds Part II: Cosmology
We explore cosmology of intersecting braneworlds with induced gravity on the branes. We find the cosmological equations that control the evolution of a moving codimension one brane and a codimension two brane that sits at the intersection. We study the Friedmann equation at the intersection, finding new contributions from the six dimensional bulk. These higher dimensional contributions allow us...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2000
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/17/21/306