scholarly journals Accidental dark matter: Case in the scale invariant localB−Lmodel

2015 ◽  
Vol 91 (11) ◽  
Author(s):  
Jun Guo ◽  
Zhaofeng Kang ◽  
P. Ko ◽  
Yuta Orikasa
Keyword(s):  
Dark Matter ◽  
Scale Invariant

scholarly journals Scale-invariant models with one-loop neutrino mass and dark matter candidates

2016 ◽  
Vol 94 (5) ◽  
Author(s):  
Amine Ahriche ◽  
Adrian Manning ◽  
Kristian L. McDonald ◽  
Salah Nasri
Keyword(s):  
Dark Matter ◽  
Neutrino Mass ◽  
Scale Invariant

scholarly journals Scale-invariant two-component dark matter

2019 ◽  
Vol 79 (2) ◽  
Author(s):  
Seyed Yaser Ayazi ◽  
Ahmad Mohamadnejad
Keyword(s):  
Dark Matter ◽  
Scale Invariant ◽  
Two Component

scholarly journals Scale-invariant dynamics of galaxies, MOND, dark matter, and the dwarf spheroidals

2019 ◽  
Vol 492 (2) ◽  
pp. 2698-2708 ◽  
Author(s):  
Andre Maeder ◽  
Vesselin G Gueorguiev
Keyword(s):  
Dark Matter ◽  
Gravitational Acceleration ◽  
Baryonic Matter ◽  
Scale Invariant ◽  
Radial Acceleration ◽  
Horizontal Asymptote ◽  
Dynamical Properties ◽  
Dwarf Spheroidals ◽  
Dynamics Of Galaxies ◽  
The Relationship

ABSTRACT The Scale-Invariant Vacuum (SIV) theory is based on Weyl’s Integrable Geometry, endowed with a gauge scalar field. The main difference between MOND and the SIV theory is that the first considers a global dilatation invariance of space and time, where the scale factor λ is a constant, while the second opens the likely possibility that λ is a function of time. The key equations of the SIV framework are used here to study the relationship between the Newtonian gravitational acceleration due to baryonic matter gbar and the observed kinematical acceleration gobs. The relationship is applied to galactic systems of the same age where the radial acceleration relation (RAR), between the gobs and gbar accelerations, can be compared with observational data. The SIV theory shows an excellent agreement with observations and with MOND for baryonic gravities gbar > 10−11.5 m s−2. Below this value, SIV still fully agrees with the observations, as well as with the horizontal asymptote of the RAR for dwarf spheroidals, while this is not the case for MOND. These results support the view that there is no need for dark matter and that the RAR and related dynamical properties of galaxies can be interpreted by a modification of gravitation.

Testing the velocity field in non-scale-invariant cold dark matter models

1995 ◽  
Vol 442 ◽  
pp. 469 ◽  
Author(s):  
Lauro Moscardini ◽  
Giuseppe Tormen ◽  
Sabino Matarrese ◽  
Francesco Lucchin
Keyword(s):  
Dark Matter ◽  
Velocity Field ◽  
Cold Dark Matter ◽  
Scale Invariant
Sign in / Sign up

Export Citation Format

Share Document