Braneworlds with a timelike extra dimension
نویسندگان
چکیده
منابع مشابه
Newton’s law in braneworlds with an infinite extra dimension
We study the behavior of the four−dimensional Newton’s law in warped braneworlds. The setup considered here is a (3 + n)-brane embedded in (5 + n) dimensions, where n extra dimensions are compactified and a dimension is infinite. We show that the wave function of gravity is described in terms of the Bessel functions of (2+n/2)-order and that estimate the correction to Newton’s law. In particula...
متن کاملGravitational Stability and Extra Timelike Dimensions
Tachyonic Kaluza-Klein modes normally appear from the compactification of extra timelike dimensions with scale L and lead to some instabilities of physical systems. We calculate the contribution of tachyonic gravitons to the self energies of spherical massive bodies of radius R and discuss their possible gravitational stability. We find that some spherical bodies can be stable at critical radii...
متن کاملCosmology with an Extra-dimension
The purpose of this contribution is to give an introduction to a new vision of extra-dimensions: the so-called “braneworld” picture. In this scenario, ordinary matter is trapped in a threedimensional space, called ‘brane’, embedded in a higher dimensional space. This idea must be contrasted with the traditional view of extra dimensions, the KaluzaKlein picture, where matter fields live everywhe...
متن کاملGravitational Stability and Screening Effect from D Extra Timelike Dimensions
We study (3+ 1)+D dimensional spacetime, where D extra dimensions are timelike. Compactification of the D timelike dimensions leads to tachyonic Kaluza-Klein gravitons. We calculate the gravitational self-energies of massive spherical bodies due to the tachyonic exchange, discuss their stability, and find that the gravitational force is screened in a certain number of the extra dimensions. We a...
متن کاملModel Independent Extra - dimension signatures with ATLAS ∗
The generic missing transverse energy signals at LHC for theories having large extra dimensions are discussed. Final states of jets plus missing energy and photons plus missing energy are simulated in the ATLAS detector. The discovery limit of LHC and the methods to determine the parameters of the underlying model are discussed.
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: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.083531