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arXiv 2004-04-30 0 views

'TeV Gamma-ray Crisis' and an Anisotropic Space Model

Cho, Gi-Chol · Kamoshita, Jun-ichi · Matsunaga, Mariko · Sugamoto, Akio · Watanabe, Isamu

Original · EN

To solve the `TeV gamma crisis', we examine a model whose one spatial direction is discretized at a high energy scale. Assuming the standard extra-galactic IR photon distribution, we evaluate the mean free-path of a energetic photon which acquires an effective mass in the model. For a wide range of the value of the lattice energy scale between a few TeV and around 10¹⁰ GeV, the mean free-path of a TeV energy photon can be enlarged enough to solve the `crisis'. Taking into account the effects of the universe expansion, we find bounds of the lattice constant.

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