TY - GEN

T1 - Loop quantum cosmology and phenomenology

AU - Bojowald, Martin

PY - 2010/8/23

Y1 - 2010/8/23

N2 - Loop quantum cosmology has provided a large set of insights about the dynamics of loop quantum gravity, based on symmetric (sometimes exactly solvable) model systems combined with advanced perturbation techniques around them. Starting with an exactly solvable, harmonic system (which happens to illustrate singularity resolution by providing examples for bouncing solutions) a systematic perturbation theory is set up. As a key challenge, it remains to formulate general inhomogeneities in a fully consistent way, respecting space-time covariance. Only if this is achieved can loop quantum gravity provide a valid proposal for a modified-gravity theory with quantum corrections, and by this gain access to observational constraints. Recent progress in this direction is described.

AB - Loop quantum cosmology has provided a large set of insights about the dynamics of loop quantum gravity, based on symmetric (sometimes exactly solvable) model systems combined with advanced perturbation techniques around them. Starting with an exactly solvable, harmonic system (which happens to illustrate singularity resolution by providing examples for bouncing solutions) a systematic perturbation theory is set up. As a key challenge, it remains to formulate general inhomogeneities in a fully consistent way, respecting space-time covariance. Only if this is achieved can loop quantum gravity provide a valid proposal for a modified-gravity theory with quantum corrections, and by this gain access to observational constraints. Recent progress in this direction is described.

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U2 - 10.1063/1.3473880

DO - 10.1063/1.3473880

M3 - Conference contribution

AN - SCOPUS:77955672136

SN - 9780735408050

T3 - AIP Conference Proceedings

SP - 66

EP - 80

BT - Gravitational Physics

T2 - 8th Mexican School on Gravitation and Mathematical Physics

Y2 - 6 December 2009 through 12 December 2009

ER -