TY - GEN

T1 - Canonical quantum gravity and effective theory

AU - Bojowald, Martin

PY - 2009

Y1 - 2009

N2 - Effective actions provide a powerful way to understand low-energy, semiclassical or other regimes of quantum field theories. Although canonical quantum gravity theories, such as loop quantum gravity, are not directly accessible to the usual techniques of computing effective actions, equivalent methods to derive an effective Hamiltonian and effective equations have recently been developed. This provides means to study the semiclassical limit of loop quantum gravity, demonstrating the correct approach to classical behavior and including quantum correction terms. Salient features of loop quantum gravity, its effective equations and applications in cosmological regimes are discussed.

AB - Effective actions provide a powerful way to understand low-energy, semiclassical or other regimes of quantum field theories. Although canonical quantum gravity theories, such as loop quantum gravity, are not directly accessible to the usual techniques of computing effective actions, equivalent methods to derive an effective Hamiltonian and effective equations have recently been developed. This provides means to study the semiclassical limit of loop quantum gravity, demonstrating the correct approach to classical behavior and including quantum correction terms. Salient features of loop quantum gravity, its effective equations and applications in cosmological regimes are discussed.

UR - http://www.scopus.com/inward/record.url?scp=84890142590&partnerID=8YFLogxK

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U2 - 10.1007/978-3-7643-8736-5_13

DO - 10.1007/978-3-7643-8736-5_13

M3 - Conference contribution

AN - SCOPUS:84890142590

SN - 9783764387358

T3 - Quantum Field Theory: Competitive Models

SP - 217

EP - 234

BT - Quantum Field Theory

PB - Birkhauser Verlag AG

T2 - 3rd Workshop on Recent Developments in Quantum Field Theory

Y2 - 20 July 2007 through 22 July 2007

ER -