SCOAP3 Repository 9 records found  Search took 0.02 seconds. 
1. Palatini frames in scalar–tensor theories of gravity / Kozak, Aleksander ; Borowiec, Andrzej
A new systematic approach extending the notion of frames to the Palatini scalar–tensor theories of gravity in various dimensions n>2 is proposed. [...]
Published in EPJC 79 (2019) 335 10.1140/epjc/s10052-019-6836-y
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2. κ -deformed BMS symmetry / Borowiec, Andrzej ; Brocki, Lennart ; Kowalski-Glikman, Jerzy ; Unger, Josua
We present the quantum κ -deformation of BMS symmetry, by generalizing the lightlike κ -Poincaré Hopf algebra. [...]
Published in Physics letters B 790 (2019) 415-420 10.1016/j.physletb.2019.01.063
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3. Galaxy rotation curves via conformal factors / Sporea, Ciprian A. ; Borowiec, Andrzej ; Wojnar, Aneta
We propose a new formula to explain circular velocity profiles of spiral galaxies obtained from the Starobinsky model in the Palatini formalism. [...]
Published in EPJC 78 (2018) 308 10.1140/epjc/s10052-018-5792-2
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4. Observables and dispersion relations in κ -Minkowski spacetime / Aschieri, Paolo ; Borowiec, Andrzej ; Pachoł, Anna
We revisit the notion of quantum Lie algebra of symmetries of a noncommutative spacetime, its elements are shown to be the generators of infinitesimal transformations and are naturally identified with physical observables. [...]
Published in JHEP 1710 (2017) 152 10.1007/JHEP10(2017)152 arXiv:1703.08726
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5. Emergence of running dark energy from polynomial f ( R ) theory in Palatini formalism / Szydłowski, Marek ; Stachowski, Aleksander ; Borowiec, Andrzej
We consider FRW cosmology in f(R)=R+γR2+δR3 modified framework. [...]
Published in EPJC 77 (2017) 603 10.1140/epjc/s10052-017-5181-2
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6. Starobinsky cosmological model in Palatini formalism / Stachowski, Aleksander ; Szydłowski, Marek ; Borowiec, Andrzej
We classify singularities in FRW cosmologies, which dynamics can be reduced to the dynamical system of the Newtonian type. [...]
Published in EPJC 77 (2017) 406 10.1140/epjc/s10052-017-4981-8
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7. Addendum to “Quantum deformations of D = 4 Euclidean, Lorentz, Kleinian and quaternionic o⋆(4) symmetries in unified o(4;C) setting” [Phys. Lett. B 754 (2016) 176–181] / Borowiec, Andrzej ; Lukierski, Jerzy ; Tolstoy, Valeriy N.
In our previous paper [1] we obtained a full classification of nonequivalent quasitriangular quantum deformations for the complex D=4 Euclidean Lie symmetry o(4;C) . [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.04.070
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8. Do sewn up singularities falsify the Palatini cosmology? / Szydłowski, Marek ; Stachowski, Aleksander ; Borowiec, Andrzej ; Wojnar, Aneta
We investigate further (cf. [...]
Published in EPJC 76 (2016) 567 10.1140/epjc/s10052-016-4426-9
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9. Yang-Baxter sigma models and Lax pairs arising from κ-Poincaré r -matrices / Borowiec, Andrzej ; Kyono, Hideki ; Lukierski, Jerzy ; Sakamoto, Jun-ichi ; et al
We study Yang-Baxter sigma models with deformed 4D Minkowski spacetimes arising from classical r -matrices associated with κ -deformations of the Poincaré algebra. [...]
Published in JHEP 1604 (2016) 079 10.1007/JHEP04(2016)079 arXiv:1510.03083
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3 Borowiec, A.
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