Loop Quantum Cosmology LQC the application of Loop
- Slides: 17
Loop Quantum Cosmology (LQC), the application of Loop Quantum Gravity (LQG) in symmetry-reduced form to cosmological models.
Background
Background
Background
Background
Quantum gravity Why do we need it? Resolving spacetime continuum below Planck scales is problematic. Information hidden by event horizon. Quantum physics leads to discrete energy levels for atoms. We expect quantum gravity to predict granular spacetime at Planck scale.
Steps towards quantum gravity
Background independence
Loop Quantum Gravity
Spin networks and spin foam
Results from LQG calculations
Loop Quantum Cosmology
Predictions and tests of LQG Probing the Planck scale, is it possible?
Predictions and tests of LQG Probing the Planck scale, is it possible? • Radiation from evaporating black holes. LQG predicts signature different from usual Hawking radiation. Hard but possible to detect with primordial black holes. Search is going on with Fermi Gamma-ray Space Telescope (FGST)
Predictions and tests of LQG Probing the Planck scale, is it possible?
Predictions and tests of LQG Probing the Planck scale, is it possible?
Reading material Books: Quantum Gavity, Carlo Rovelli (2004) The Road to Reality, Roger Penrose (2004) Three roads to quantum gravity, Lee Smolin (2001) Articles: Loop Quantum Gravity, Carlo Rovelli, Physics World, Nov 2003 Lectures on Loop Quantum Gravity, T. Thiemann, ar. Xiv: gr-qc/0210094, Oct 2002 Loop Quantum Cosmology, An Overview, A. Ashtekar, ar. Xiv: gr-qc/0812. 0177, Nov 2008 Loop Quantum Cosmology, M Bojowald, Living Reviews in Relativity, July 2008 Experimental Search for Quantum Gravity, S. Hossenfelder, ar. Xiv: gr-qc/1010. 3420, Oct 2010