Unit transformation of Cosmological Constant ?

In summary: It involves using the concept of scalar field inflation models and considering the energy densities of the universe. The conversions above can be used as a tool in this process. Additionally, by redefining units such as c and hbar, length and time have the same dimension as energy^-1, making it easier to compare energy densities with energy. This solution also addresses the reason for the small value of dark energy and predicts the future of our universe. You can read more about it at the Physics Forums Blog. In summary, using conversions and considering energy densities in scalar field inflation models can help solve the fine tuning problem and provide insights into the future of our universe.
  • #1
icarus2
10
0
Question : How to unit transformation of Cosmological Constant?

10-47 GeV4 ===> ? eV
or, x eV ===> ? GeV4


1) How compair ( X ) GeV4 with ( Y ) eV ?

2) How compair ( 10-29 g/cm3) with (Y eV)?

please, easely explain to me!
and, have a nice day!
 
Last edited:
Space news on Phys.org
  • #2
Try these conversions. They are a good tool when working with cosmology equations like scalar field inflation models.

Temperature: 1 GeV ---> 10^13 K
Mass: 1 GeV ---> 10^-25 g
Time: 1 GeV^-1 ---> 10^-24 sec
Length: 1 GeV^-1 ---> 10^-14 cm
 
  • #3
Thanks you!
I will try by them.

If reader have a better idea, please write down!
 
  • #4
You are comparing energies with energydensities. eV is of dimension energy.
But if c=hbar=1 (cosmologists tend to redefine their units like that), length and time have the same dimension, that is they are both of dimension energy^-1.

Thus, energy densities (energy/Length^3) have the same dimension as energy^4.
 
  • #5
Thanks Amanheis! good explain!

I have make a challenge to that fine tuning problem(the reason of that mass density of universe close to critical mass density), inflation mechanism(start and end), the reason of that dark energy has a small value, future of our universe, at Physics Forums Blog.
 
Last edited:
  • #6
edgepflow said:
Try these conversions. They are a good tool when working with cosmology equations like scalar field inflation models.

Temperature: 1 GeV ---> 10^13 K
Mass: 1 GeV ---> 10^-25 g
Time: 1 GeV^-1 ---> 10^-24 sec
Length: 1 GeV^-1 ---> 10^-14 cm

I got a solution
 
Last edited:

1. What is the unit transformation of the cosmological constant?

The unit transformation of the cosmological constant is the conversion from one unit to another unit for measuring the value of the cosmological constant. The most commonly used unit for the cosmological constant is the Planck unit, but other units such as meters, kilometers, or light-years can also be used.

2. How is the value of the cosmological constant measured in different units?

The value of the cosmological constant can be measured in different units by using conversion factors. These conversion factors are derived from the fundamental constants of nature, such as the speed of light and the gravitational constant. These factors allow for the transformation of the value of the cosmological constant from one unit to another.

3. What is the significance of unit transformation of the cosmological constant?

The unit transformation of the cosmological constant is significant because it allows for the comparison and understanding of the value of the cosmological constant in different units. This is important for accurately interpreting the value and implications of the cosmological constant in different contexts or theoretical frameworks.

4. How does the unit transformation affect our understanding of the cosmological constant?

The unit transformation does not affect our understanding of the cosmological constant itself, but it does affect how we measure and interpret its value. By using different units, we can gain a better understanding of the magnitude and significance of the cosmological constant in different scales and contexts.

5. Are there any challenges or limitations to unit transformation of the cosmological constant?

There may be some challenges or limitations to unit transformation of the cosmological constant, as it relies on the accuracy and precision of the conversion factors used. Additionally, some units may not be applicable in certain theoretical frameworks, which could limit our understanding of the cosmological constant in those contexts.

Similar threads

  • Special and General Relativity
Replies
4
Views
926
Replies
2
Views
846
Replies
5
Views
1K
Replies
1
Views
878
Replies
7
Views
1K
Replies
153
Views
10K
  • Cosmology
Replies
11
Views
2K
  • Cosmology
Replies
1
Views
1K
Back
Top