Fetching the paper…

Reading the bibliography…

Nonsingular, big-bounce cosmology from spinor-torsion coupling · Around

2011

Nonsingular, big-bounce cosmology from spinor-torsion coupling

Poplawski, Nikodem

Original
PDF
Post on X

Understand

The Einstein-Cartan-Sciama-Kibble theory of gravity removes the constraint of general relativity that the affine connection be symmetric by regarding its antisymmetric part, the torsion tensor, as a dynamical variable.

The minimal coupling between the torsion tensor and Dirac spinors generates a spin-spin interaction which is significant in fermionic matter at extremely high densities.
We show that such an interaction averts the unphysical big-bang singularity, replacing it with a cusp-like bounce at a finite minimum scale factor, before which the Universe was contracting.
This scenario also explains why the present Universe at largest scales appears spatially flat, homogeneous and isotropic.

Built on

A. Raychaudhuri, Phys. Rev. 98
1955
Earlier work this paper cites.
T. W. B. Kibble, J. Math. Phys. (N.Y.) 2
1964
Earlier work this paper cites.
F. W. Hehl and B. K. Datta, J. Math. Phys. (N.Y.) 12
1971
Earlier work this paper cites.
F. W. Hehl, P. von der Heyde, and G. D. Kerlick, Phys. Rev. D 10
1974
Earlier work this paper cites.
E. Schrödinger, Space-time Structure
1975
Earlier work this paper cites.
G. D. Kerlick, Phys. Rev. D 12
1976
Earlier work this paper cites.
R. F. O’Connell, Phys. Rev. D 16
1977
Earlier work this paper cites.

Similar

B. Kuchowicz, Gen. Relativ. Gravit. 9
1978
Cited alongside, same era.
M. Tsamparlis, Phys. Lett. A 75
1979
Cited alongside, same era.
R. M. Wald, General Relativity
1984
Cited alongside, same era.
I. S. Nurgaliev and W. N. Ponomariev, Phys. Lett. B 130
1986
Cited alongside, same era.
P. Minkowski, Phys. Lett. B 173
1986
Cited alongside, same era.
K. Nomura, T. Shirafuji, and K. Hayashi, Prog. Theor. Phys. 86
1991
Cited alongside, same era.
W. Kopczyński, Phys. Lett. A 39
1998
Cited alongside, same era.

Then

J. Rich, Fundamentals of Cosmology
2001
Later among the works it cites.
F. W. Hehl, Phys. Lett. A 36
2002
Later among the works it cites.
N. J. Popławski, Phys. Lett. B 690
2010
Later among the works it cites.
N. J. Popławski, Phys. Lett. B 687
2010
Later among the works it cites.
N. J. Popławski, Ann. Phys. (Berlin) 523
2011
Closest in time.
N. J. Popławski, Phys. Lett. B 694
2011
Closest in time.
N. J. Popławski, Gen. Relativ. Gravit. 44
2012
Closest in time.

Beyond the bibliography

alphaXiv searches the wider corpus for related work and actual follow-ups.

Open on alphaXiv

alphaXiv is searching for related work…