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hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System · Around

2016

hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System

Zumalacarregui, Miguel, Bellini, Emilio, Sawicki, Ignacy et al.

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We present the public version of hi_class (www.hiclass-code.net), an extension of the Boltzmann code CLASS to a broad ensemble of modifications to general relativity.

In particular, hi_class can calculate predictions for models based on Horndeski's theory, which is the most general scalar-tensor theory described by second-order equations of motion and encompasses any perfect-fluid dark energy, quintessence, Brans-Dicke, $f(R)$ and covariant Galileon models.
hi_class has been thoroughly tested and can be readily used to understand the impact of alternative theories of gravity on linear structure formation as well as for cosmological parameter extraction.

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