Popławski, Nikodem J. A nonsingular, anisotropic universe in a black hole with torsion and particle production. (English) Zbl 1482.83142 Gen. Relativ. Gravitation 53, No. 2, Paper No. 18, 14 p. (2021). MSC: 83F05 83C57 58A15 57Q10 83C60 83D05 83C75 PDFBibTeX XMLCite \textit{N. J. Popławski}, Gen. Relativ. Gravitation 53, No. 2, Paper No. 18, 14 p. (2021; Zbl 1482.83142) Full Text: DOI arXiv
Cubero, Jordan L.; Popławski, Nikodem J. Analysis of big bounce in Einstein-Cartan cosmology. (English) Zbl 1478.83242 Classical Quantum Gravity 37, No. 2, Article ID 025011, 12 p. (2020). MSC: 83F05 83D05 58A15 57Q10 83C60 83E05 80A10 PDFBibTeX XMLCite \textit{J. L. Cubero} and \textit{N. J. Popławski}, Classical Quantum Gravity 37, No. 2, Article ID 025011, 12 p. (2020; Zbl 1478.83242) Full Text: DOI arXiv
Popławski, Nikodem Primordial fluctuations of scale factor in closed Universe in Einstein-Cartan gravity. (English) Zbl 1405.83051 Mod. Phys. Lett. A 33, No. 40, Article ID 1850236, 13 p. (2018). MSC: 83D05 83F05 PDFBibTeX XMLCite \textit{N. Popławski}, Mod. Phys. Lett. A 33, No. 40, Article ID 1850236, 13 p. (2018; Zbl 1405.83051) Full Text: DOI arXiv
Popławski, Nikodem J. The energy and momentum of the universe. (English) Zbl 1292.83060 Classical Quantum Gravity 31, No. 6, Article ID 065005, 7 p. (2014). MSC: 83F05 83C40 83C05 83D05 83C45 83C57 85A40 83C55 PDFBibTeX XMLCite \textit{N. J. Popławski}, Classical Quantum Gravity 31, No. 6, Article ID 065005, 7 p. (2014; Zbl 1292.83060) Full Text: DOI arXiv
Popławski, Nikodem J. Big bounce from spin and torsion. (English) Zbl 1238.83042 Gen. Relativ. Gravitation 44, No. 4, 1007-1014 (2012). MSC: 83C60 83C75 83D05 83F05 83C55 PDFBibTeX XMLCite \textit{N. J. Popławski}, Gen. Relativ. Gravitation 44, No. 4, 1007--1014 (2012; Zbl 1238.83042) Full Text: DOI arXiv