Nonsingular, big-bounce cosmology from spinor-torsion coupling

Popławski, Nikodem J.

doi:10.1103/physrevd.85.107502

Cited by 160 publications

(164 citation statements)

References 37 publications

(33 reference statements)

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“…(10) and (11) with respect to the transformations by eq. (27) and (28), respectively create the relationship (34) and after joining again with eq. (9) with renamed variables then displays perfect agreement with the results found before.…”

Section: Incorporating Relativistic Effectsmentioning

confidence: 99%

“…These FRW universes have a singularity at their beginning, which represents the BB. BHs are required to demonstrate singularities as well, untypical for a mathematical description of nature [26,27]; furthermore, in the case of a closed universe no light can escape, which is just the common definition of it in some accordance to the imagination in Greece mythology.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Idea to a World inside a Black Hole

Gerlitz¹,

Walden²

2017

IJP

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An investigation on black holes reveals interesting new data. Due to the many speculations about the inside of black holes a concept is developed to allow consideration of the properties occuring inside on a model consisting of an electromagnetic wave. The advantage of the current model is that the investigation is based on a mass originated from even that wave and rather avoids to base the study on an already existing massive mass, which then preliminary excludes any transparent imagination in that field. The theory starts on a classical treatment to later incorporate relativistic considerations leading finally to the transformation equations appropriate for a description of an anti-world. On the basis of the photo sphere the Schwarzschild radius can be determined, which is completely free and independent then on any preliminary given conditions those could ban further in-depth treatment of that task. It is shown each of the two frames reveals individually its own Schwarzschild radius, both of them being reciprocal to each other. In spite of their distinct characteristics of the frames inside and outside a black hole it can be stated out those radii touch each other. A comparison of the two frames can be established by a set of transformation equations to justify the physical properties of the two frames are ideally mirrored in accordance to CPT-operation. The possibility of an anti-universe inside a black hole is discussed.

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Section: Incorporating Relativistic Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Idea to a World inside a Black Hole

Gerlitz¹,

Walden²

2017

IJP

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“…A famous example is the Poincaré gauge theory of Gravity [30][31][32][33][34][35][36][37]. Some works have been done to develop a model of geometric dark energy in the Poincaré gauge theory framework [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. In [38][39][40][41][42][43] the effect of torsion is to introduce an extra-term into matter density and pressure which gives rise to an accelerated behavior of the universe.…”

Section: Jhep05(2016)024mentioning

confidence: 99%

“…Some works have been done to develop a model of geometric dark energy in the Poincaré gauge theory framework [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. In [38][39][40][41][42][43] the effect of torsion is to introduce an extra-term into matter density and pressure which gives rise to an accelerated behavior of the universe. However, the torsion contributes only a constant density, it is not possible to solve the coincidence and fine tuning problem.…”

Section: Jhep05(2016)024mentioning

confidence: 99%

Cosmology in Poincaré gauge gravity with a pseudoscalar torsion

Chee

2016

J. High Energ. Phys.

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A cosmology of Poincaré gauge theory is developed, where several properties of universe corresponding to the cosmological equations with the pseudoscalar torsion function are investigated. The cosmological constant is found to be the intrinsic torsion and curvature of the vacuum universe and is derived from the theory naturally rather than added artificially, i.e. the dark energy originates from geometry and includes the cosmological constant but differs from it. The cosmological constant puzzle, the coincidence and fine tuning problem are relieved naturally at the same time. By solving the cosmological equations, the analytic cosmological solution is obtained and can be compared with the ΛCDM model. In addition, the expressions of density parameters of the matter and the geometric dark energy are derived, and it is shown that the evolution of state equations for the geometric dark energy agrees with the current observational data. At last, the full equations of linear cosmological perturbations and the solutions are obtained.

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“…Einstein's theory implies the existence of black holes and gravitational singularities, where the quantities that are used to measure the gravitational field become infinite in such a way that does not depend on the coordinate system. According to general relativity, the initial state of the universe at the beginning of the Big Bang was a singularity ( [11]). Another type of singularity would be formed inside a black hole ( [5]).…”

Section: Introductionmentioning

confidence: 99%