Weinberg Paper: Understanding Two Loop Corrections for Gravitational Force

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In summary, the Weinberg paper discusses two-loop corrections to the classical Newtonian gravitational force law. These corrections are important because they provide a more accurate understanding of gravity, especially in extreme conditions, and help reconcile differences between classical and quantum theories. The two-loop corrections modify the classical law by introducing additional terms that account for quantum effects. The findings of this paper could have significant implications for our understanding of gravity and its applications in fields such as astrophysics and high energy physics.
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romeo6
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I have been reading a Weinberg paper (the cosmological constant problem), where he writes

"...Zeldovich assumed that these were canceled leaving only the higher order effects: in particulal, the gravitational force between the particles in the vacuum fluctuations. (In Feynman diagram terms, this corresponds to throwing away te one-loop graphs, but keeping those with two loops"

Can someone help me understand this. I thought QFT said nothing about gravity. Why do the two loops correspond to the gravitational force??
 
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anyone??

:)
 
  • #3
You might have better luck if you cite the paper.
 

1. What is the Weinberg paper about?

The Weinberg paper, titled "Understanding Two Loop Corrections for Gravitational Force," is a scientific research article that discusses the two-loop corrections to the classical Newtonian gravitational force law.

2. Why are two-loop corrections important in understanding gravitational force?

Two-loop corrections are important because they provide a more accurate understanding of the gravitational force, especially at extreme distances or in systems with high energy. They also help reconcile the discrepancies between classical and quantum theories of gravity.

3. How do two-loop corrections affect the classical Newtonian gravitational force law?

The two-loop corrections modify the classical Newtonian gravitational force law by introducing additional terms that account for the effects of quantum gravity. These corrections are typically small but become more significant in extreme conditions.

4. What are some potential implications of the findings in the Weinberg paper?

The findings of the Weinberg paper could have significant implications for our understanding of gravity and the fundamental laws of physics. They could also potentially help improve our ability to accurately predict the behavior of gravitational systems, such as the motion of planets or the formation of galaxies.

5. How can the information in the Weinberg paper be applied in practical settings?

The findings in the Weinberg paper are primarily relevant for theoretical and experimental physicists studying the nature of gravity. However, the insights gained from this research could potentially have practical applications in fields such as astrophysics, cosmology, and high energy physics.

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