We expand our analysis of Newtonian Fractional-Dimension Gravity (NFDG), an extension the classical laws gravity to lower dimensional spaces, including those with fractional (i.e., non-integer) dimension. apply model four rotationally supported galaxies (NGC 5033, NGC 6674, 5055, 1090), in addition other three 7814, 6503, 3741) which were analyzed previous studies. NFDG is able fit rotation cur...

In this paper we studied the thermal negativity in a two-qubit XX spin ½ chain model and XXX spin1/2 chain model(isotropic Heisenberg model)spin-1/2 chain subjected to an external magnetic field inz direction. We calculate analytical relation for the thermal negativity for two qubit XX and XXX spinchain models in the external magnetic field. Effects of the magnetic field and temperature on then...