Heuristic Approach EFE: Why 10 DOF?

In summary, the reason we seek 10 degrees of freedom in a symmetric two index tensor is because in General Relativity there are four dimensions of spacetime and the metric is symmetric, leading to 10 independent equations out of 16. Out of these 10 degrees of freedom, 6 are accounted for and the remaining 4 allow for arbitrary coordinate transformations. However, this reasoning is not entirely correct and without specific references, the discussion cannot continue.
  • #1
binbagsss
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TL;DR Summary
Some sources state we seek 10 dof ( and so ofc this is a symmetric two index tensor.


My question is why we seek 10 dof in the first place ?


Many thanks
Some sources state we seek 10 dof ( and so ofc this is a symmetric two index tensor.My question is why we seek 10 dof in the first place ?Many thanks
 
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  • #2
binbagsss said:
Some sources

What sources? Please give specific references.
 
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  • #3
The number of equations is because in General Relativity there are four dimensions of spacetime.
 
  • #4
The metric is symmetric, so there are only 10 independent equations out of 16. That accounts for 6 degrees of freedom. The remaining 4 degrees of freedom are to allow for arbitrary coordinate transformations.
 
  • #5
Daverz said:
The metric is symmetric, so there are only 10 independent equations out of 16. That accounts for 6 degrees of freedom. The remaining 4 degrees of freedom are to allow for arbitrary coordinate transformations.

No, this is not correct. First, 10 independent equations does not account for 6 degrees of freedom. Second, 4 degrees of freedom is not enough to allow for arbitrary coordinate transformations.
 
  • #6
In the absence of any references, this thread is closed.
 

FAQ: Heuristic Approach EFE: Why 10 DOF?

What is the Heuristic Approach EFE?

The Heuristic Approach EFE (Effective Field Theory) is a mathematical framework used in physics to describe the interactions between particles at different energy scales. It is based on the idea that the behavior of particles can be described by an effective theory at a certain energy scale, rather than using a more fundamental theory.

What is the significance of 10 DOF in the Heuristic Approach EFE?

10 DOF (Degrees of Freedom) refers to the number of independent variables or parameters that are needed to fully describe a physical system. In the Heuristic Approach EFE, 10 DOF is used to describe the interactions between particles at a specific energy scale, allowing for a more accurate and simplified description of the system.

How does the Heuristic Approach EFE differ from other approaches?

The Heuristic Approach EFE differs from other approaches in that it focuses on the effective theory at a specific energy scale, rather than trying to describe all possible energy scales. This allows for a more efficient and simplified description of the system, making it easier to analyze and understand.

What are the advantages of using the Heuristic Approach EFE?

One of the main advantages of using the Heuristic Approach EFE is that it allows for a more accurate and simplified description of physical systems, making it easier to analyze and understand complex interactions between particles. It also provides a framework for incorporating new data and observations into the theory.

How is the Heuristic Approach EFE used in practical applications?

The Heuristic Approach EFE is used in a variety of practical applications, including particle physics, cosmology, and condensed matter physics. It has been used to make predictions and calculations in areas such as the behavior of particles at high energies, the evolution of the universe, and the properties of materials at the nanoscale.

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