On asymptotic behaviour of galactic rotation curves in superfluid vacuum theory
arXiv:2201.04135 · doi:10.1134/S1063772921100437
Abstract
The logarithmic superfluid theory of physical vacuum predicts that gravity is an induced phenomenon, which has a multiple-scale structure. At astronomical scales, as the distance from a gravitating center increases, gravitational potential and corresponding spacetime metric are dominated by a Newtonian (Schwarzschild) term, followed by a logarithmic term, finally by linear and quadratic (de Sitter) terms. Correspondingly, rotation curves are predicted to be Keplerian in the inner regions of galaxies, mostly flat in the outer regions, and non-flat in the utmost outer regions. We compare theory's predictions with the furthest rotation curves data points available for a number of galaxies: using a two-parameter fit, we perform a preliminary estimate which disregards the combined effect of gas and stellar disc, but is relatively simple and uses minimal assumptions for galactic luminous matter. The data strongly points out at the existence of a crossover transition from flat to non-flat regimes at galactic outskirts.
arXiv comment5 pages, 1 figure
References in corpus (16)
- Logarithmic nonlinearity in theories of quantum gravity: Origin of time and observational consequences
- Model for gravity at large distances
- Solving forward and inverse problems of the logarithmic nonlinear Schrodinger equation with PT-symmetric harmonic potential via deep learning
- Spontaneous symmetry breaking and mass generation as built-in phenomena in logarithmic nonlinear quantum theory
- Volume element structure and roton-maxon-phonon excitations in superfluid helium beyond the Gross-Pitaevskii approximation
- What is the price of abandoning dark matter? Cosmological constraints on alternative gravity theories
- An alternative to dark matter and dark energy: Scale-dependent gravity in superfluid vacuum theory
- Galaxies Rotation Curves in the Grumiller's Modified Gravity
- Resolving the puzzle of sound propagation in liquid helium at low temperatures
- On the dynamical nature of nonlinear coupling of logarithmic quantum wave equation, Everett-Hirschman entropy and temperature
- Temperature-driven dynamics of quantum liquids: Logarithmic nonlinearity, phase structure and rising force
- Singularity-free model of electric charge in physical vacuum: Non-zero spatial extent and mass generation
- Vacuum Cherenkov effect in logarithmic nonlinear quantum theory
- Ringlike vortices in a logarithmic generalized Maxwell theory
- Superfluid vacuum theory and deformed dispersion relations
- Superfluid stars and Q-balls in curved spacetime