scholarly journals “Asymptotically non-minkowskian” bubbles with gravitational repulsion

1997 ◽  
Vol 113 (2) ◽  
pp. 1491-1496 ◽  
Author(s):  
A. T. Barnaveli ◽  
M. Ya. Gogberashvili
Keyword(s):  
Gravitational Repulsion

scholarly journals Antimatter gravity and the Universe

2019 ◽  
Vol 35 (08) ◽  
pp. 2030001
Author(s):  
Dragan Slavkov Hajdukovic
Keyword(s):  
Gravitational Acceleration ◽  
Quantum Vacuum ◽  
Cpt Symmetry ◽  
Cyclic Universe ◽  
Gravitational Repulsion ◽  
Antimatter Gravity ◽  
Gravitational Dipoles ◽  
First Time ◽  
Theoretical Paradigms ◽  
The Universe

The aim of this brief review is twofold. First, we give an overview of the unprecedented experimental efforts to measure the gravitational acceleration of antimatter; with antihydrogen, in three competing experiments at CERN (AEGIS, ALPHA and GBAR), and with muonium and positronium in other laboratories in the world. Second, we present the 21st Century’s attempts to develop a new model of the Universe with the assumed gravitational repulsion between matter and antimatter; so far, three radically different and incompatible theoretical paradigms have been proposed. Two of these three models, Dirac–Milne Cosmology (that incorporates CPT violation) and the Lattice Universe (based on CPT symmetry), assume a symmetric Universe composed of equal amounts of matter and antimatter, with antimatter somehow “hidden” in cosmic voids; this hypothesis produced encouraging preliminary results. The heart of the third model is the hypothesis that quantum vacuum fluctuations are virtual gravitational dipoles; for the first time, this hypothesis makes possible and inevitable to include the quantum vacuum as a source of gravity. Standard Model matter is considered as the only content of the Universe, while phenomena usually attributed to dark matter and dark energy are explained as the local and global effects of the gravitational polarization of the quantum vacuum by the immersed baryonic matter. An additional feature is that we might live in a cyclic Universe alternatively dominated by matter and antimatter. In about three years, we will know if there is gravitational repulsion between matter and antimatter; a discovery that can forever change our understanding of the Universe.

scholarly journals Antigravity, an Answer to Nature’s Phenomena including the Expansion of the Universe

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
C. K. Gamini Piyadasa
Keyword(s):  
Scientific Reasoning ◽  
Gravitational Force ◽  
Gravitational Attraction ◽  
Attraction Force ◽  
Heavy Particles ◽  
Slowing Down ◽  
Repulsion Force ◽  
Gravitational Repulsion ◽  
Expansion Of The Universe ◽  
The Universe

The gravitational attraction force being proportional to the mass has been experimentally shown for several hundred years now, but no gravitational repulsion has been identified within the accepted scientific reasoning. Here, we show that the gravitational repulsion force, similar to the gravitational attraction among particles has also been in existence in nature but, yet to be recognized. The results of experiments are shown in detail and are discussed in the recent series of-publications. It is also shown here that this gravitational repulsion force is proportional to the temperature which is an indicator of thermal energy of the particle, similar to the gravitational attraction that is proportional to the mass of the particle. The situations where heavy particles such as iodine, tungsten, and thorium in vacuum move against gravitational force have already been shown qualitatively. The increase in time-of-fall of water droplets (slowing down of fall) with rise in temperature is also quantitatively discussed. This article discusses two major phenomena observable in nature, clouds and the expansion of universe, which could be more preciously explained by the concept of antigravity.

Gravitational repulsion by Kerr and Kerr-Newman black holes

1985 ◽  
Vol 31 (12) ◽  
pp. 3135-3139 ◽  
Author(s):  
K. D. Krori ◽  
Madhumita Barua
Keyword(s):  
Black Holes ◽  
Gravitational Repulsion

On the intrinsic gravitational repulsion

2004 ◽  
Vol 20 (4) ◽  
pp. 683-700 ◽  
Author(s):  
Jakub Czajko
Keyword(s):  
Gravitational Repulsion

scholarly journals COSMOLOGICAL CONSTANT AND GRAVITATIONAL REPULSION EFFECT I: HOMOGENEOUS MODELS WITH RADIATION

1993 ◽  
Vol 02 (04) ◽  
pp. 443-450
Author(s):  
NGUYEN HONG CHUONG ◽  
NGUYEN VAN HOANG
Keyword(s):  
Cosmological Constant ◽  
Vacuum Energy Density ◽  
Elementary Functions ◽  
Homogeneous Cosmological Models ◽  
Gravitational Repulsion ◽  
Homogeneous Models ◽  
Gravitational Vacuum ◽  
Gravitating Systems ◽  
Gauge Theory Of Gravity ◽  
Repulsion Effect

Within the framework of the minimum quadratic Poincare gauge theory of gravity in the Riemann-Cartan spacetime, we study the influence of gravitational vacuum energy density (a cosmological constant) on the dynamics of various gravitating systems. It is shown that the inclusion of the cosmological term can lead to gravitational repulsion. For some simple cases of spatially homogeneous cosmological models with radiation, we obtain nonsingular solutions in the form of elementary functions and elliptic integrals.

Gravitational repulsion of spherical domain walls

1994 ◽  
Vol 100 (2) ◽  
pp. 1023-1029 ◽  
Author(s):  
A. Barnaveli ◽  
M. Gogberashvili
Keyword(s):  
Domain Walls ◽  
Spherical Domain ◽  
Gravitational Repulsion

Gravitational repulsion in the Einstein-zero-mass scalar theory

1984 ◽  
Vol 62 (7) ◽  
pp. 629-631 ◽  
Author(s):  
K. D. Krori ◽  
J. C. Sarmah ◽  
D. Goswami
Keyword(s):  
Scalar Field ◽  
Recent Work ◽  
Scalar Theory ◽  
Zero Mass ◽  
Gravitational Repulsion ◽  
Particle Velocities

In this paper we extend a recent work by McGruder by investigating gravitational repulsion in the Einstein-zero-mass scalar theory. We notice that in the presence of a scalar field, gravitational repulsion is possible for particle velocities lower than those required in the pure Einstein (Schwarzschild) field. The zero-mass scalar field has acquired particular importance recently because of a suggestion by Weinberg and Wilczek that there should exist a pseudoscalar boson, the so-called axion, of negligible mass. The work of Peccei and Quinn has lent further support to the idea of axions.

scholarly journals GRAVITATIONAL REPULSION AND THE COMET

Science ◽  
1918 ◽  
Vol 47 (1203) ◽  
pp. 70-71
Author(s):  
F. E. Nipher
Keyword(s):  
Gravitational Repulsion
Sign in / Sign up

Export Citation Format

Share Document