Perimeter Institute, Waterloo, Canada
Loop Quantum Gravity
The basic assumptions, principles and results of loop quantum gravity are presented. Recent progress is then described in applications to three
areas: 1) black hole entropy, 2) early universe cosmology and 3) Planck scale phenomenology. In cosmology results are reviewed which suggest that there may be observable corrections to CMB spectra from quantum gravity effects in the very early universe. There is also the possibility of tests of modifications of energy-momentum relations due to quantum gravity effects, coming from observations of gamma ray bursts and high energy cosmic rays. Recent progress deriving predictions for these tests will be described.