Show Summary Details
Page of

date: 28 November 2021

p. 11610. Questions for the 21st centurylocked

p. 11610. Questions for the 21st centurylocked

  • Frank Close


‘Questions for the 21st century’ looks at current trends in particle physics research. Up to 90% of the matter in the universe remains undetected, and many theories exist to explain what this ‘dark matter’ is. One theory is supersymmetry, which postulates that there is a unity between fermions (quarks and leptons) and bosons. Despite the lack of evidence, the theory solves a lot of problems in unifying quantum and particle physics. Alternatively, dark matter could be due to neutrinos spontaneously changing between generations. The Higgs boson may explain the fundamental nature of mass. Scientists also look for spontaneous appearances or disappearances, as this may suggest the existence of alternate dimensions.

Access to the complete content on Very Short Introductions online requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.