Temperature at beginning of Electroweak Epoch?

[thebigdog]

Now, I understand that any discussion of the very early Universe is entirely hypothetical and to say it is extremely speculative is being generous. However, there are a few concepts regarding the Grand Unified Epoch, the Inflationary Epoch, and the Electroweak Epoch that I am hoping someone will have the patience to explain…

 

According to http://en.wikipedia.org/wiki/Inflation_(28cosmology)

 

 

“Reheating”

“Inflation is a period of supercooled expansion, when the temperature drops by a factor of 100,000 or so. (The exact drop is model dependent, but in the first models it was typically from 10^27K down to 10^22K.) This relatively low temperature is maintained during the inflationary phase. When inflation ends the temperature returns to the pre-inflationary temperature; this is called reheating or thermalization because the large potential energy of the inflaton field decays into particles and fills the Universe with Standard Model particles, including electromagnetic radiation, starting the radiation dominated phase of the Universe.”​

 

My question is this: If, “during the period of supercooled expansion during the Inflationary Epoch the temperature dropped from 10^27K down to 10^22K, and when inflation ends the temperature RETURNS to the pre-inflationary temperature in the process called reheating....”

 

Does mean that, at the beginning of the next epoch – the Electroweak Epoch – the temperature ROSE BACK TO 10^27K (the temperature at the start of Inflation)? If that is correct, then what would the temperature have been at the END of the Electroweak Epoch?

 

Thanks in advance for your time and consideration,

 

Stan

[Mordred]

There is no clear answer on this, The temperature figures depends too much on predictions and knowledge of particle physics. In terms of what particles drop out of thermal equilibrium at what estimated temperatures. The figures you have are based on one of the original GUT models. Something Glashkow which is SO(5) as we don't fully know what caused inflation, we can only estimate the temperature of start and finish.

The problem with inflation is there is still 70+ good fit to observation models. So there is too much discrepancies between the start/stop and volume change. This also occurred prior to the dark ages which makes matters worse

[thebigdog]

There is no clear answer on this, The temperature figures depends too much on predictions and knowledge of particle physics. In terms of what particles drop out of thermal equilibrium at what estimated temperatures. The figures you have are based on one of the original GUT models. Something Glashkow which is SO(5) as we don't fully know what caused inflation, we can only estimate the temperature of start and finish.

The problem with inflation is there is still 70+ good fit to observation models. So there is too much discrepancies between the start/stop and volume change. This also occurred prior to the dark ages which makes matters worse

 

Thanks for your response, Mordred; it is greatly appreciated.

 

Yes, I DO understand that any numbers are inherently "model dependent." However, WikiPedia got their numbers SOMEWHERE. (I am assuming the model used to be Glashow's SO(5) model.) So I guess what I am asking is.....

 

"Using WikiPedia's figures of 27^10K at the beginning of Inflation and 10^22K at the end of Inflation, what would the temperature have risen to at the beginning of the Electroweak Epoch, and what would the temperature have been at the end of the Electroweak Epoch?"

 

Thanks again for your courtesy, my friend, and have a great day!

 

Stan

[Mordred]

The figures on wiki pages will usually be referenced, for the source, look under the page reference.

 

The Gut models today ie SO(10) break down the epocks differently, and at different temperature values

[swansont]

Yes, I DO understand that any numbers are inherently "model dependent." However, WikiPedia got their numbers SOMEWHERE.

Did you check reference 19? (also, I fixed your broken link in the OP)

 

edit: xpost with Mordred

[thebigdog]

The figures on wiki pages will usually be referenced, for the source, look under the page reference.

 

The Gut models today ie SO(10) break down the epocks differently, and at different temperature values

Thanks, amigo; I should have checked that reference in the first place; I hope it helps!

 

Thanks again,

 

Stan

 

Did you check reference 19? (also, I fixed your broken link in the OP)

 

edit: xpost with Mordred

Thank you, swansont; that reference should help me out.

 

Thank you for your time and patience,

 

Stan

[Airbrush]

Wow! In other words the temperature at the beginning was 10^27K which is about 2 OCTILLION Fahrenheit.