2026-04-07 - 2026-04-10
Hier geht es zur AnmeldungJohn A. Peacock
University of Edinburgh
We have known for over 25 years that the expansion of the universe is accelerating. Therefore the cosmic energy density is dominated by a novel component with negative gravitational properties, termed Dark Energy. A frontier challenge in cosmology is to measure the properties of this component accurately, in the hope of illuminating its physical origin. This task requires in parallel accurate measurements of the other constituents of the universe: normal baryonic matter, and matter that can clump. New generations of experiment enable us to undertake these measurements, using data on fluctuations in the temperature of the cosmic microwave background, and maps of the large-scale galaxy distribution; this information has recently generated considerable publicity by claiming that the Dark Energy does indeed evolve. These lectures will review the physical models that allow such information on the cosmological model to be extracted, and will give a critical assessment of whether we can claim that the evolution of Dark Energy is established with confidence.
