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Pjpic
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Is the theory that inflatons become dominate when gravity is strong (as in right after the big band) and when gravity is weak (as in driving the current expansion of the observable universe)?
Current models typically make use of General Relativity, with the stress-energy tensor during inflation dominated by the inflaton. That is, inflation models have no change in gravity at all, and the inflaton interacts with gravity just like everything else: through energy, momentum, pressure, and twisting forces.Pjpic said:Is the theory that inflatons become dominate when gravity is strong (as in right after the big band) and when gravity is weak (as in driving the current expansion of the observable universe)?
Chronos said:Matter had not yet come into existence at the time of inflation, so the role of gravity during inflation is not entirely clear. Guth suggests a special case of gravity during inflation - a repulsive form that drives inflation. In his version the energy driving inflation decays into the hot particle soup of the classical big bang.
Nope. The inflaton field is a bizarre creature with an unusual stress-energy content. In particular, [itex]p \propto -\rho[/itex]: it is a perfect fluid with a negative pressure. In the limit that [itex]p = -\rho/3[/itex], the density [itex]\rho[/itex] is constant.Pjpic said:a) The density of a black hole doesn't create the same effect?
Do you mean the current accelerated expansion? Nobody knows because we lack a well-understood and well-supported model describing this accelerated expansion.b) Does the energy driving the current expansion decay into particles?
Inflatons are hypothetical particles that are thought to be responsible for the rapid expansion of the universe during the inflationary period. They interact with gravity through their gravitational field, which can cause space-time to expand or contract.
The interaction between inflatons and gravity is believed to be the driving force behind the rapid expansion of the universe during the inflationary period. This expansion is thought to have smoothed out irregularities in the early universe and set the stage for the formation of galaxies and other structures we see today.
No, all particles with mass interact with gravity through their gravitational field. However, inflatons are unique in that they have a specific type of field that causes space-time to expand or contract, which is different from the gravitational fields of other particles.
Scientists study the interaction between inflatons and gravity through theoretical models and observations of the universe. They use mathematical equations to describe the behavior of inflatons and how they interact with gravity, and then test these theories against observations of cosmic microwave background radiation, galaxy distributions, and other data from the early universe.
Yes, there is strong evidence for the interaction between inflatons and gravity from observations of the cosmic microwave background radiation. These observations support the theory of inflation and provide evidence for the role of inflatons in driving the expansion of the universe. However, more research and observations are needed to fully understand the nature of this interaction.