Velocity curves of galaxies flatten for large redshifts

Sabine Hossenfelder gave a link to a popular article telling about new strange finding in cosmology. The rotation curves are declining for high redshifts meaning that the constant velocity of distant starts decreases for high redshifts. For the illustrations of the rotation curves see the popular article Declining Rotation Curves at High Redshift).

The decline of the rotation curves is predicted by TGD. In TGD framework the phenomenon would have the same origin as the finding that dark matter seems to be less influental in early Universe (see the popular article Dark Matter Less Influential in Galaxies in Early Universe). There is also the finding that Hubble constant is smaller in long length scales.

Some time ago also new finding about correlation of baryonic mass density with density of dark matter emerged. TGD explanation involves only the string tension of cosmic strings and predicts the behavior of baryonic matter on distance from the center of the galaxy ( see this for TGD explanation).

In standard cosmology based on single-sheeted GRT space-time large redshifts mean very early cosmology at the counterpart of single space-time sheet, and the findings are very difficult to understand. What about the interpretation of the results in TGD framework?

The basic difference between TGD based and standard cosmology is that many-sheeted space-time brings in fractality and length scale dependence. In zero energy ontology (ZEO) one must specify in what length scale the measurements are carried out. This means specifying causal diamond CD parameterized by moduli including the its size. The larger the size of CD, the longer the scale of the physics involved. This is of course not new for quantum field theorists. It is however a news for cosmologists. The twistorial lift of TGD allows to formulate the vision quantitatively.

1. TGD view resolves the paradox due to the huge value of cosmological constant in very small scales. Kähler action and volume energy cancel each other so that the effective cosmological constant suffers huge reduction in cosmic scales and solves the greatest (the “most gigantic” would be a better attribute) quantitative discrepancy that physics has ever encountered. The smaller value of Hubble constant in long length scales finds also an explanation.

2. The effective cosmological constant defining cosmic string tension identified as the sum of Kähler action and volume term decreases like inverse of the p-adic length scale squared because these terms compensate each other. As a consequence, the string tension of cosmic strings proportional to the effective cosmological constant is reduced in long length scales and galactic velocity curves decline. Furthermore, the acceleration of cosmic expansion decreases.

For background see chapters About twistor lift of TGD and Some questions related to the twistor lift of TGDof “Towards M-matrix” or the article with the same title.

For a summary of earlier postings see Latest progress in TGD.

Articles and other material related to TGD.