### Topics

- Hello. Recently I have proposed an interpretation of the acceleration of the universe's expansion, which can be seen at http://arxiv.org/abs/1111.0520. Thank you for your attention.
- Universe contains large-scale quantities of material with the task emale gravitational + /-im and the resultant force is repulsive, this explains the accelerated expansion of the universe k = im * (-im) / R ^ 2 = km ^ 2 / R ^ 2 > 0. Universe is dominated by small-scale gravitational field with one srcina type = im * kim / R ^ 2 =- km ^ 2 / R ^ 2 <0 This may explain some abnormal movement of matter in galaxies. Assuming that it contains matter with mass m = m1 + m2 gravitational load Sg = im1+ (-im2), m1> m2. Then a '= (im1-im2) * Kim / (m1 + m2) R ^ 2 =- (m1-m2) * km / (m1 + m2) R ^ 2 from the a =- km / R ^ 2 for classical gravitational one type of task. If im1= im2 then a '= 0 and the collision of two galaxies some movement in the field will continue to interact under inertia without gravity. Actually writing the classical expression for the gravitational force as F = SG1 * kSg2/R^2 more general with Sg=+/-im .startup is a generalization from a mathematical point
- If universe is assumed to be flat, irrespective of its original generating conditions, and found to accelerate, the logical interpretation is that it as a whole behaves like a vortex, where every bodily mass is moving away from any other one next to it. This condition may be achieved by a force of gravitational potential difference, as a black hole. Of course vortices require also a medium for their particular shapings.
- But what i studied in Hartle that pressure was coming negative ,and density was negative which was unacceptable for Einstein ,then he said that there must be cosmological constant.
- In my opinion a critical density is known only for a flat, open and closed universe, and what are you looking for maybe can be found in models of phase transitions (I mean transition from decelerating to accelerating phase ) which I think is difficult to find.
- There is a formula for Critical Density of a black hole which is equal to Schwarzschild's Radius divided by 2. If the universe is a black hole then this formula is useful.
- Dear Joe Clema, I suggest you to go through the entire conversation between Bill LaPorte-Bryan and myself regarding some topics of gravitation and astrophysics. This may help you to make some of your ideas clear. The entire conversation exists in researchgate and has not been deleted.

## All Answers (9)