4 papers
Bayesian Geometrical Modeling of IXPE Polarization Angle Curves of the Magnetars 1E 2259+586 and 1E 1547.0-5408
Biao-Peng Li, Zhi-Fu Gao, Wen-Qi Ma +2
X-ray polarimetry directly probes the radiation geometry and large-scale magnetic configuration of magnetars. We present a uniform Bayesian comparison between a dipole-dominated cl…
Is there a chiral dark dynamo in the universe induced by quantum correction, Nieh-Yan gravity and Barbero-Immirzi field?
Zhi Fu Gao, Biao Peng Li, L. C. Garcia de Andrade
Bombagcino investigated the role of Immirzi parameter when promoted to a field in Einstein-Cartan-Holst black hole and they found that the Immirzi field acts similar to the axion f…
Reheating chiral dynamos with spin-0 and massive spin-1 torsions via chiral asymmetry
Zhi-Fu Gao, Biao-Peng Li, L. C. Garcia de Andrade
Recently, Syderenko et al. (JCAP, 10: 018, 2016) investigated magnetogenesis and chiral asymmetry in the early hot universe. This study explores the impact of minimally coupling a…
Dark photons and tachyonic instability induced by Barbero-Immirzi parameter and axion-torsion transmutation
Zhi-Fu Gao, Biaopeng Li, L. C. Garcia de Andrade
In this paper, we investigate Holst gravity by examining two distinct examples. The first example involves minimal coupling to torsion, while the second explores non-minimal coupli…