Universe / Cosmic Inflation



COSMIC EXPANSION

Inflation theory was first proposed by Alan Guth in 1979 at Cornell University US.

In Physics "universe expansion" is the exponential growth of the space in the universe. The inflationary epoch lasted from about 10^-36 seconds from the big bang event to sometimes between 10^-33 to 10^-32 seconds after the big bang singularity.

Cosmic Inflation explains various critical conepts 

  1.  Why universe is Homegeneous ?
  2. Why universe is flat ?
  3. Why Cosmic Mirowave Background Radiations (CMBR) disturbed ?

Eternal Inflation:

Eternal inflation is a hypotheical inflationary universe model, which is itself an outgrowth or extension of the big bang theory.
According to the eternal inflation. The inflation phase of the universe lasts forever throughout the universe.

Three Puzzles:

Cosmic inflation give answer to the following puzzles or mysteries of the universe.
  1. The universe is so uniform on large scale. Normally different objects are same because they have been in contact some time in the past.  But the universe is same throughout although different part of the universe have not communicated.
  2. The geometry of the universe is so flat.
  3. lumps on the large scales of universe, which have turned into galaxies and stars from where did these fluctuation came from.

Universe After Inflation:

The universe had to roll down from the peak of the Mexican Hat Diagram one way or another causing the forces of nature to split from each other and then the exponentiation growth of the universe ended
After the cosmic inflation the universe became 10^50 larger then before inflation.

Reference : https://en.wikipedia.org/wiki/Inflation_(cosmology)


 

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