Recently published an article discussing the fundamental possibility of committing
journey to the past without breaking the "paradox of killing grandpa" or paradox
the mutual relationship of the past event and the subsequent one.
This article by Germain Tobar and Fabio Costa is called "Reversible dynamics with
closed time-like curves and freedom of choice."
I will remind you that the paradox of the murdered grandfather is a time paradox
related to travel
in time, first described by science fiction writer Rene Barjavel in a 1943 book
"Careless traveler" (French Le voyageur imprudent). A man with a time machine went back
to the past, where he killed his biological grandfather before the latter met the
traveler's grandmother. The result suggests that one of the traveler's parents, and, as
a result, the traveler himself, would never have been born.
Tobarg and his disciple Dr. Costa, in the above-mentioned article, considered the
possibility of fundamentally not violating the principle of mutual communication when
traveling to the past.
Fundamentally new in their theoretical research, in my opinion, is that they
recalibration of events is allowed when travelling to the past.
That is, when affecting events in the past, the events are rebuilt or
are recalibrated in such a way that the final situation in subsequent events will not be
broken.
The conclusions of their work in particular say, "As a result, we have demonstrated that there are a number of scenarios in which numerous observers can communicate without causation within the classical framework."
This means, for example, if a person is in the past and wants to stop any epidemic. For example, to prevent the virus from spreading from a zero patient, then changes in subsequent events should occur.
In the paradox with Grandpa, I understand that Grandpa should never be eliminated. And the event chain of events, following the fact of the possible elimination of grandfather, should be directed towards countering the upcoming event.
I am not a specialist in the field of classical and quantum gravity, but some works on the topic "closed time-like curves" I was interested in and were read.
I have a question about those who have been or are interested in such problems.
Do I understand this question?
Is the evidence (authors Germain Tobar and Fabio Costa in their article) sufficient to not violate the grandfather paradox. And are the authors correct in asserting in their article the following:
"The most important outcome of our work is the discovery of various non-trivial quadripartite process functions that are compatible with the presence of CTC. This demonstrates that when several local regions interact with each other in the presence of the CTC, there are a wide range of communication scenarios that still allow free choice for observers in each region without developing logical inconsistencies, such as the grandfather paradox. "
Is it possible to create a time locator? or whether recalibration of events avoids
violations of the paradox of mutual communication?
Me be.. If You have good abilities and adapptang jointly with others
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