# Bulletin of the American Physical Society

# APS April Meeting 2019

## Volume 64, Number 3

## Saturday–Tuesday, April 13–16, 2019; Denver, Colorado

### Session S01: Poster Session III (14:00-17:00)

2:00 PM,
Monday, April 15, 2019

Sheraton
Room: Plaza Foyer

### Abstract: S01.00030 : Conservation of angular momentum and expansion speed of the universe

#### Presenter:

Han yong Quan

(15611860790)

#### Author:

Han yong Quan

(15611860790)

The celestial body with absolute mass is only the universe, and the universe expands in rotation, so the angular momentum of the universe is absolutely conserved. We can also conclude that the ratio of the radius of the universe equals the ratio of the density of the universe to the inverse of the cube. The density of the universe 10^{-43}seconds after the big bang is 10^{94} grams per cubic centimeter, and the density of the universe is now 10^{-31} grams per cubic centimeter. According to the law of conservation of angular momentum, M1V1R1=M2V2R2, where M1, V1, and R1 represent the mass, rotation speed, and radius of 10^{-43 }seconds after the Big Bang, respectively. M2, V2, and R2 represent the mass, rotation speed, and radius. Since M1=M2, the law of conservation of angular momentum of the universe can be simplified as: V1R1=V2R2, and the deformation is: V1/V2=R2/R1=4.65×10^{41}. The universe is not radiated outward, so the rotation speed of the cosmic edge is not less than the speed of light, that is, V2 is calculated according to the speed of light, then V1=4.65×10^{41}×V2=4.65×10^{41}×3×10^{8}=1.4×10^{50}, that is, after the big bang The rotation speed of the universe in 10^{-43} seconds is not less than 1.4 × 10^{50} meters per second.

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