384 citations · 1.8k across the 60 of their papers we have counts for
60 papers
Quantum Calculi: differential forms and vector fields in noncommutative geometry
Andrzej Borowiec
In this paper, we revise the concept of noncommutative vector fields introduced previously in Ref. [1,2], extending the framework, adding new results and clarifying the old ones. U…
Scalar-tensor cosmologies in a minisuperspace formulation: a case study
Andrzej Borowiec, Aleksander Kozak
We revisit a general minisuperspace (MSS) formalism for scalar-tensor (ST) FLRW type cosmological models in arbitrary frame with perfect fluid source. We discuss how to impose Cauc…
3-dimensional -BMS Symmetry and its Deformations
A. Borowiec, J. Kowalski-Glikman, J. Unger
In this paper we study quantum group deformations of the infinite dimensional symmetry algebra of asymptotically AdS spacetimes in three dimensions. Building on previous results in…
BMS algebras in 4 and 3 dimensions, their quantum deformations and duals
A. Borowiec, L. Brocki, J. Kowalski-Glikman +1
BMS symmetry is a symmetry of asymptotically flat spacetimes in the vicinity of the null boundary of spacetime and it is expected to play a fundamental role in physics. It is inter…
Dispersion Relations in -Noncommutative Cosmology
Paolo Aschieri, Andrzej Borowiec, Anna Pachoł
We study noncommutative deformations of the wave equation in curved backgrounds and discuss the modification of the dispersion relations due to noncommutativity combined with curva…
New class of hybrid metric-Palatini scalar-tensor theories of gravity
Andrzej Borowiec, Aleksander Kozak
A class of scalar-tensor theories (STT) including a non-metricity that unifies metric, Palatini and hybrid metric-Palatini gravitational actions with non-minimal interaction is pro…