# Conserved Quantities in de Sitter ST

• aman02
In summary, Conserved quantities in de Sitter spacetime are physical properties that remain constant over time and play a crucial role in understanding the behavior and evolution of the universe. They are closely related to the symmetries of the system and examples include energy, momentum, and angular momentum. These quantities do not change over time as long as the underlying symmetries are preserved.
aman02
[SOLVED] Conserved Quantities

Last edited:
Use your two geodesic equations for $\ddot x$ and $\ddot t$. You should find that $dL/d\tau$ vanishes.

Oh - I was just being silly, thanks. I totally see what I was supposed to do now. Close please.

## What are conserved quantities in de Sitter spacetime?

Conserved quantities in de Sitter spacetime are physical properties that remain constant over time, regardless of the specific dynamics of the system. They are important in understanding the behavior and evolution of the universe.

## What is the significance of conserved quantities in de Sitter spacetime?

Conserved quantities play a crucial role in the study of de Sitter spacetime as they provide a way to characterize the behavior of the system and make predictions about its future evolution. They also help to identify symmetries and underlying laws of physics.

## What are some examples of conserved quantities in de Sitter spacetime?

Some examples of conserved quantities in de Sitter spacetime include energy, momentum, and angular momentum. Other conserved quantities may depend on the specific dynamics of the system, such as the number of particles or the total mass.

## How are conserved quantities related to the symmetries of de Sitter spacetime?

In de Sitter spacetime, conserved quantities are closely related to the symmetries of the system. This is because symmetries correspond to transformations that leave the conserved quantities unchanged. For example, the conservation of energy is related to the time translation symmetry of de Sitter spacetime.

## Can conserved quantities in de Sitter spacetime change over time?

No, by definition, conserved quantities in de Sitter spacetime remain constant over time. This means that even as the universe expands and evolves, these quantities will not change as long as the underlying symmetries are preserved.

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