### Abstract

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.

Original language | English (US) |
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Title of host publication | Quantum Field Theory |

Subtitle of host publication | Competitive Models |

Pages | 217-234 |

Number of pages | 18 |

DOIs | |

State | Published - Dec 1 2009 |

Event | 3rd Workshop on Recent Developments in Quantum Field Theory - Leipzig, Germany Duration: Jul 20 2007 → Jul 22 2007 |

### Publication series

Name | Quantum Field Theory: Competitive Models |
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### Other

Other | 3rd Workshop on Recent Developments in Quantum Field Theory |
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Country | Germany |

City | Leipzig |

Period | 7/20/07 → 7/22/07 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Atomic and Molecular Physics, and Optics

### Cite this

*Quantum Field Theory: Competitive Models*(pp. 217-234). (Quantum Field Theory: Competitive Models). https://doi.org/10.1007/978-3-7643-8736-5-13

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*Quantum Field Theory: Competitive Models.*Quantum Field Theory: Competitive Models, pp. 217-234, 3rd Workshop on Recent Developments in Quantum Field Theory, Leipzig, Germany, 7/20/07. https://doi.org/10.1007/978-3-7643-8736-5-13

**Canonical quantum gravity and effective theory.** / Bojowald, Martin.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Canonical quantum gravity and effective theory

AU - Bojowald, Martin

PY - 2009/12/1

Y1 - 2009/12/1

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

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

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

ER -