Janus Cosmological Model
December 16, 2014
January 7, 2015
January 10, 2014
February 26, 2015
March 6, 2015
April 24, 2015: fourth goal
I stopped updating my website a year ago, almost exactly. There is a very simple reason. I started a battle to publish scientific works
For some days now, "new ideas are making a buzz".
There are essentially two:
- Canadian researchers have just launched a "revolutionary", "shocking" idea that is making a buzz internationally.
Michel de Pracontal comments on this work, in Mediapart, dated December 13, 2014:
Is there a parallel universe in which time would be reversed and would go from the future to the past? Although it seems strange, this hypothesis could explain the direction of the arrow of time, according to British physicist Julian Barbour and his colleagues Tim Koslowski and Flavio Mercati.
The researchers have built a model in which the universe, starting from the big bang, splits into two branches, each with a time arrow oriented in the opposite direction of the other. In other words, the direction of time, which our intuitive experience shows us as flowing inevitably from the past to the future, could reverse.
It is thus learned that at the Big Bang, not one universe but two were created, and that in this second universe, time would flow backwards.
Internet messages show that the idea is fascinating. However, it is not new. The first to have published an article on this subject was Andrei Sakharov, in 1967.
A.D. Sakharov, ZhETF Pis’ma 5 : 32 ; JETP Lett. 5 : 24 ( 1967 )
A.D.Sakharov , ZhETF Pis’ma 76 : 1172 (1979) ; JETP 49 : 594 (1979)
A.D. Sakharov (1980).
Cosmological Model of the Universe with a Time Vector Inversion
. ZhETF (Tr. JETP 52, 349-351) (79): 689–693
Personally, I had, with great surprise, discovered this work only in 1982, in a book entirely in French, published by the Editions Anthropos, titled "A.D.Sakharov, Oeuvres Scientifiques". The publisher no longer exists today. You may perhaps find this book in a library. In fact, this book was the translation of the English edition, published by the Library of Congress:
A.D.Sakharov, Collected scientific works, Library of Congress Cataloging in publication Data. 1982.
The second introduction of such a startling idea corresponds to the two following publications, dating from 1977:
J.P.Petit:
"Enantiomorphic universes with opposite proper times"
, CRAS of May 8, 1977, vol. 285 pp. 1217-1221
J.P.Petit: "
Universes interacting with their image in the mirror of time
". CRAS of June 6, 1977, vol. 284, series A, pp. 1413-1416
I had spoken of two ideas. The second refers to the concept of negative mass. There, this work has just been published, on November 14, 2014, in a highly rated journal: Physical Review D. Here is the reference.
Negative mass bubbles in de Sitter space-time
. Saoussen Mbarek, M. B. Paranjape.
Journal reference: Phys. Rev. D 90, 101502(R), 2014
Nov. 14
DOI: 10.1103/PhysRevD.90.101502
Report number: UdeM-GPP-TH-14-235
The articles, if you try to download them from the journal's website, are paywalled (about twenty dollars). However, there is a preprint online site, the site arXiv. If you click on this link, you will immediately have access to the article in question:
.
http://arxiv.org/abs/1407.1457
There, this article is the subject of numerous comments in different blogs, around the world. For example:
https://www.sciencenews.org/article/negative-mass-might-not-defy-einstein
Translation: "Negative mass might not defy Einstein's theory"
In September, two articles were published in two high-level journals, Astrophysics and Space Science and Modern Physics Letters A:
J.P.Petit and G.D’Agostini :
Negative mass hypothesis and the nature of dark energy.
Astrophysics and Space Science (2014) 354 : 611-615 20 Sept 2014 DOI 10.1007/s10509-014-2106-5
Abstract:
The observed acceleration of the universe raises a puzzling question. What is the nature of a dark energy that would cause this phenomenon? We recall the arguments against the existence of negative matter on General Relativity grounds. They vanish if the universe is considered as a manifold M4 associated to two coupled metrics, solutions of a coupled field equation system. We build a non-steady solution where the positive species accelerates while the negative one decelerates. So that dark energy is replaced by (dominant) negative matter action.
J.P.Petit and G.D’Agostini :
Cosmological bimetric model with interacting positive and negative masses and two different speeds of light in agreement with the observed acceleration of_the Universe.
Modern Physics Letters A. Modern Physics Letters A Vol. 29, No. 34 (24 oct. 2014) 1450182 (15 pages) DOI: 10.1142/S021773231450182X
Abstract:
An extension of a previously published model of bimetric universe is presented, where the speeds of light associated to positive and negative mass species are different. As presented earlier, the dissymmetry of the model explains the acceleration of the positive species, while the negative one slows down. Dissymmetry affects scale factors linked to lengths, times and speeds of light, so that if craft’s mass inversion could be achieved interstellar travels could become non-impossible, at a velocity less that the speed of light corresponding to the negative sector, possibly much higher than the one of the positive sector.
Translation:
First paper: J.P.Petit and Gilles d'Agostini: Bimetric cosmological model with interaction between positive and negative masses, these two entities being associated with different speeds of light. Model in agreement with the observation of the cosmic acceleration.
Abstract:
The fact that the acceleration of the universe has been observed remains an embarrassing question (this discovery was awarded a Nobel Prize in 2011). What could be the nature of this "dark energy" that would be the engine of this acceleration? We start by recalling the arguments, coming from General Relativity, that oppose the existence of negative masses in the universe. These arguments fall if we consider the universe as a four-dimensional manifold (M4) with two metrics, solutions of a system of two coupled field equations. We build an exact, non-steady solution of this system, showing that the positive mass species (us) accelerate, while the negative mass species decelerate. Thus the "dark energy" effect is replaced by the action (dominant) of negative mass.
Second paper: J.P.Petit and Gilles d'Agostini:
The hypothesis of negative mass and the nature of dark energy.
Astrophysics and Space Science, September 20, 2014.
Abstract:
This is an extension of the previous article, which referred to a bimetric description of the universe, but where we associate different speeds of light to the positive and negative mass species. As it had been presented in the previous article, this model explains the observed acceleration, concerning the positive masses. We find its corollary: the negative mass entities decelerate. This asymmetry affects not only the limitations to a light speed, but also the f...