Ultra-large distance modification of gravity from Lorentz symmetry breaking at the Planck scale | Zendy

Dmitry Gorbunov | Zendy; Sergey Sibiryakov | Zendy

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Ultra-large distance modification of gravity from Lorentz symmetry breaking at the Planck scale

Author(s) -

Dmitry Gorbunov,

Sergey Sibiryakov

Publication year - 2005

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2005/09/082

Subject(s) - graviton , physics , tachyon , symmetry breaking , lorentz transformation , gravitation , planck mass , spontaneous symmetry breaking , planck length , massive gravity , classical mechanics , quantum electrodynamics , theoretical physics , planck scale , particle physics , quantum mechanics , quantum gravity , quantum

We present an extension of the Randall--Sundrum model in which, due tospontaneous Lorentz symmetry breaking, graviton mixes with bulk vector fieldsand becomes quasilocalized. The masses of KK modes comprising thefour-dimensional graviton are naturally exponentially small. This allows topush the Lorentz breaking scale to as high as a few tenth of the Planck mass.The model does not contain ghosts or tachyons and does not exhibit the vanDam--Veltman--Zakharov discontinuity. The gravitational attraction betweenstatic point masses becomes gradually weaker with increasing of separation andgets replaced by repulsion (antigravity) at exponentially large distances.Comment: 28 page

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