Higgs inflation with the Holst and the Nieh–Yan term

摘要: The action of loop quantum gravity includes the Holst term and/or Nieh--Yan in addition to Ricci scalar. These terms are expected couple nonminimally Higgs. Thus and contribute classical equations motion, they can have a significant impact on inflation. We derive inflationary predictions parameter space nonminimal couplings, including coupled up dimension 4. Successful inflation is possible even with zero or negative coupling Notably, supported by alone gives almost same observables as original metric formulation plateau Higgs A cannot give successful When all three considered, for spectral index tensor-to-scalar ratio span whole range probed upcoming experiments. This not true running index, many cases highly tuned.