384 citations · 1.8k across the 60 of their papers we have counts for
3 papers · 1 filter
Starobinsky cosmological model in Palatini formalism
Aleksander Stachowski, Marek Szydlowski, Andrzej Borowiec
We classify singularities in FRW cosmologies, which dynamics can be reduced to the dynamical system of the Newtonian type. This classification is performed in terms of geometry of…
Twisted bialgebroids versus bialgebroids from a Drinfeld twist
Andrzej Borowiec, Anna Pachol
Bialgebroids (resp. Hopf algebroids) are bialgebras (Hopf algebras) over noncommutative rings. Drinfeld twist techniques are particularly useful in the (deformation) quantization o…
Central tetrads and quantum spacetimes
Andrzej Borowiec, Tajron Juric, Stjepan Meljanac +1
In this paper, we perform a parallel analysis to the model proposed in [25]. By considering the central co-tetrad (instead of the central metric), we investigate the modifications…