Friday, August 15, 2014


I am confident that the knowledge and skills we shall acquire for this school will be crucial as we work to realize ours aspirations. According to this week, I have been happy to see some fundamental connections between formal theoritical physics and applied physics.

Certainly we have seen a lot of things but I just want to talk about big bang theory and Inflation in theory.

-Big Bang theory 

In one split second there was the Big Bang, and since then, most of Scientists said, nothing is as before. They back in time and observe the space to figure out what the big bang and what that spawned the phenomenon that gave birth to the universe and time.
The Big Bang is not over, we're still living it since the universe is still expanding. Big bang theory was deduced from observations and reflection of Hubble. Expanding our world has made ​​such a phenomenal rate that was forced to use the Planck time to study the Big Bang.
Indeed, only one unit of Planck after the creation of our world, the four forces governing our universe (gravity, electromagnetic force, strong nuclear force and low) differed to implement the creative process. Then an incredible fight to the death took place between matter and antimatter formed almost in equal parts at the Big Bang. The material that was not annihilated is the whole of this matter in our Universe.

-What about Inflation, in theory ?

According to the consensus theory in cosmology, the Universe expanded exponentially during its first moments. That inflation explains a lot of observed features of the cosmos, such as the remarkable uniformity of the CMB. CMB is the Cosmic Microwave Background. However, inflation is less a theory than a set of models with differences in details; worse still, other theories produce similar predictions and match the observations we have so far.

One possible way to distinguish between models is the presence or absence of primordial gravitational radiation. Inflation would have created substantial fluctuations in the structure of space-time, with their strength and properties depending on the details of the particular inflationary model. However, though astronomers have known for decades that gravitational waves exist, the evidence for them is indirect, so few expect to measure primordial gravitational radiation directly in the foreseeable future. 

I'll give more details in inflation on my next blog at the end of the weekend.


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