Physicists simulate critical 'reheating' period that kicksta

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Physicists simulate critical 'reheating' period that kicksta

Postby socrat44 on October 27th, 2019, 2:56 am 

October 25, 2019
Physicists simulate critical 'reheating' period that kickstarted the Big Bang
--
Recent observations have independently supported theories
for both the Big Bang and cosmic inflation. But the two
processes are so radically different from each other that
scientists have struggled to conceive of how
one followed the other.
Now physicists at MIT, Kenyon College, and elsewhere have
simulated in detail an intermediary phase of the early
universe that may have bridged cosmic inflation
with the Big Bang.
This phase, known as "reheating," occurred at the end
of cosmic inflation and involved processes that wrestled
inflation's cold, uniform matter into the ultrahot,
complex soup that was in place at the start of the Big Bang.
--
Kaiser and his colleagues simulated in detail how
multiple forms of matter would have interacted
during this chaotic period at the end of inflation.
Their simulations show that the extreme energy
that drove inflation could have been
redistributed just as quickly, within an even smaller
fraction of a second, and in a way that produced
conditions that would have been required
for the start of the Big Bang.
The team found this extreme transformation
would have been even faster and more efficient
if quantum effects modified the way that matter
responded to gravity at very high energies,
deviating from the way Einstein's theory of
general relativity predicts matter and gravity
should interact.
#
Before running their simulations, the team
added a slight "tweak" to the model's description of gravity.
--
/ by Jennifer Chu, Massachusetts Institute of Technology /
https://phys.org/news/2019-10-physicist ... eriod.html
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socrat44
Member
 
Posts: 398
Joined: 12 Dec 2015


Re: Physicists simulate critical 'reheating' period that kic

Postby socrat44 on October 27th, 2019, 4:07 am 

They . . . ''simulated in detail how multiple forms of matter
would have interacted'' from (during) ''. . . . .
Chaotic period + Inflation + a slight quantum "tweak" = Big Bang
#
Hmm . . it is really very ''complex soup '', especially if the
components of vegetables complex-soup are unknown
===
socrat44
Member
 
Posts: 398
Joined: 12 Dec 2015



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