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Preon Stars

A preon star is a hypothetical star composed of the hypothetical particles called preons. Preons have been proposed in the 1970s as the building blocks of quarks and leptons to address some of the problems not resolved by the Standard Model. It fell out of favour in the 1980s and 90s because of the lack of experimental evidence and the seemingly more promising theory
Preon Star of superstring. More recently in the 2000s, confidence in string theory has waned in some quarters, leading to renewed interest in alternative approaches, including preon models (see Wikipedia for more about preon theory). There are now several proposed methods to test the preon theory and preon star. An obvious test is for the LHC to break up the quark into its constituent preons. While preon star can be detected via gravitational lensing or gravitational waves with its special signatures. Figure 08-20e compares the size and density of the various degeneracy stars. The data for the preon star are highly speculative especially when no one knows the

Figure 08-20e Degeneracy Stars
[view large image]

mass of the preons. It is also suggested nevertheless that preon stars could possibly account for some of the dark matter in the universe.

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