# Changes between Version 1 and Version 2 of SpinTwo

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Timestamp:
04/06/12 16:32:51 (7 years ago)
Comment:

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Unmodified
 v1 {{{ #!latex $\Lambda = \overline{M_{pl}} \sim 2.4 \times 10^{18} GeV$ Theory with D = 4 + 1 dimensions, in which the extra dimension is spatial and assumed to be compactified to be a torus with radius R. Here, the total space-time has a warped metric and the size of the extra dimension  can be at the order of the Planck length. Again, only spin-2 particles can propagate through 5 dimensions, therefore, a massive KK tower of spin-2 particles appear in 4 dimensions. They can interact with the SM fields with a strong coupling constant given by -1/Λ: {{{ #!latex $\Lambda = \overline{M_{pl}} \, e^{kR\pi}$ where k is a scale of order of the Planck scale. In this model, the mass of the nth spin-2 particle is given by: {{{ #!latex $m_n = k \, x_n \, e^{-kR\pi}$ The graviton is massless in this class of theories and its coupling to the SM particles is given by -1/Λ: {{{ #!latex $\Lambda = \overline{M_{pl}}(\mu^{*}) \sim \mu^{*} \sim 1 \, TeV.$