How about: Can realistic boundary conditions cure the Casimir energy divergence?

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In summary, a new research paper has found that applying more realistic boundary conditions to the Casimir energy calculation can cause it to diverge near the plates. This has significant implications for the use of Casimir energy in sf devices, as it challenges the validity of calculations based on idealized boundary conditions. The paper also raises questions about the compatibility of these findings with the concept of quantum inequalities on negative energy densities.
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This new research paper shows that more realistic boundary conditions on the Casimir energy calculation can lead it to diverge in the neighborhood of the plates. Obvious applications to sf devices are left as an excercise
 
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Very interesting.

Does this still square with the "quantum inequalities" on negative energy densities?
 
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Originally posted by selfAdjoint
This new research paper shows that more realistic boundary conditions on the Casimir energy calculation can lead it to diverge...

You got it backwards: Realistic BCs are the cure, as one would expect. Here are the final two sentences in the abstract:

"This result implies that the energy depends in detail on the properties of the material, which are not captured by the idealized boundary conditions. This divergence...does invalidate calculations of Casimir stresses based on idealized boundary conditions."
 
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1. What is Casimir energy?

Casimir energy is a quantum mechanical effect that results in a small attractive force between two parallel uncharged conducting plates placed close to each other in a vacuum.

2. Why can Casimir energy diverge?

Casimir energy can diverge when the plates are brought infinitely close together, as the number of possible energy states for the quantum fluctuations between the plates increases, leading to an infinite amount of energy.

3. How is Casimir energy related to the vacuum?

Casimir energy is a manifestation of the vacuum energy, which refers to the lowest possible energy state of a quantum mechanical system. In the case of Casimir energy, the vacuum fluctuations between the plates contribute to the overall energy of the system.

4. What are the consequences of Casimir energy divergence?

Casimir energy divergence has implications for the stability of physical systems, as it can lead to a runaway effect and potentially disrupt the balance of forces in a system. It may also have implications for theoretical models in physics, such as the cosmological constant problem.

5. Can Casimir energy divergence be controlled or harnessed?

Currently, there are no known ways to control or harness Casimir energy divergence. However, ongoing research in quantum field theory and nanotechnology may lead to potential applications in the future.

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