Changes between Version 1 and Version 2 of SpinTwo
- Timestamp:
- Apr 6, 2012, 4:32:51 PM (12 years ago)
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SpinTwo
v1 v2 12 12 13 13 {{{ 14 15 14 #!latex 16 15 $\Lambda = \overline{M_{pl}} \sim 2.4 \times 10^{18} GeV$ … … 33 32 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: 34 33 {{{ 35 36 34 #!latex 37 35 $\Lambda = \overline{M_{pl}} \, e^{kR\pi}$ … … 39 37 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: 40 38 {{{ 41 42 39 #!latex 43 40 $m_n = k \, x_n \, e^{-kR\pi}$ … … 61 58 The graviton is massless in this class of theories and its coupling to the SM particles is given by -1/Λ: 62 59 {{{ 63 64 60 #!latex 65 61 $\Lambda = \overline{M_{pl}}(\mu^{*}) \sim \mu^{*} \sim 1 \, TeV.$
