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- W2115841398 abstract "Big bang nucleosynthesis requires a fine balance between equations of state for photons and relativistic fermions. Several corrections to equation of state parameters arise from classical and quantum physics, which are derived here from a canonical perspective. In particular, loop quantum gravity allows one to compute quantum gravity corrections for Maxwell and Dirac fields. Although the classical actions are very different, quantum corrections to the equation of state are remarkably similar. To lowest order, these corrections take the form of an overall expansion-dependent multiplicative factor in the total density. We use these results, along with the predictions of big bang nucleosynthesis, to place bounds on these corrections and especially the patch size of discrete quantum gravity states." @default.
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- W2115841398 date "2008-04-07" @default.
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- W2115841398 title "Dirac fields in loop quantum gravity and big bang nucleosynthesis" @default.
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- W2115841398 doi "https://doi.org/10.1103/physrevd.77.084003" @default.
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