Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983basi...11..214s&link_type=abstract
Astronomical Society of India, Bulletin, vol. 11, Sept. 1983, p. 214-220.
Astronomy and Astrophysics
Astronomy
Cosmology, Electromagnetic Interactions, Gravitational Constant, Unified Field Theory, Gauge Theory, High Energy Interactions, Quantum Chromodynamics, Relativity
Scientific paper
Recent progress in the unification of strong, weak and electromagnetic interactions suggests that the high energy behavior of these interactions would be different from their observed low energy characteristics. For instance their coupling constants would become a function of the energy (momentum) of the interacting particles and would become comparable at a particular large energy scale. Extension of these ideas to gravitation would imply that the high energy behavior of gravity (well described by Einstein's general relativity, which is a non-Abelian gauge theory at low energies) may also be different and in particular, the gravitational constant will become energy dependent. At very large energy scales involved in the earliest epochs of the universe and in gravitational collapse, i.e., near singularities, these modifications to the low energy theory could have interesting consequence for quantum gravity.
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