The shadow world of superstring theories
Abstract
Recent attempts to construct a superstring theory that unifies all the interactions of nature, including gravity, in a finite anomaly-free quantum theory have led to the speculation that there may exist another form of matter (`shadow matter') in the Universe, which only interacts with `ordinary matter' (for example, quarks, leptons) through gravity or gravitational-strength interactions. The existence of shadow matter would have many astrophysical and cosmological implications, some of which are discussed here.
- Publication:
-
Nature
- Pub Date:
- April 1985
- DOI:
- 10.1038/314415a0
- Bibcode:
- 1985Natur.314..415K
- Keywords:
-
- Big Bang Cosmology;
- Gravitation Theory;
- Matter (Physics);
- Particle Theory;
- Quantum Theory;
- Unified Field Theory;
- Baryons;
- Broken Symmetry;
- Missing Mass (Astrophysics);
- Nuclear Fusion;
- Solar System;
- Astrophysics