Inflation from Quantum Geometry

Martin Bojowald

doi:10.1103/PhysRevLett.89.261301

Inflation from Quantum Geometry

Martin Bojowald

Research output: Contribution to journal › Article › peer-review

165 Scopus citations

Abstract

Quantum geometry predicts that a universe evolves through an inflationary phase at small volume before exiting gracefully into a standard Friedmann phase. This does not require the introduction of additional matter fields with ad hoc potentials; rather, it occurs because of a quantum gravity modification of the kinetic part of ordinary matter Hamiltonians. An application of the same mechanism can explain why the present day cosmological acceleration is so tiny.

Original language	English (US)
Journal	Physical review letters
Volume	89
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.89.261301
State	Published - 2002

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.89.261301

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title = "Inflation from Quantum Geometry",

abstract = "Quantum geometry predicts that a universe evolves through an inflationary phase at small volume before exiting gracefully into a standard Friedmann phase. This does not require the introduction of additional matter fields with ad hoc potentials; rather, it occurs because of a quantum gravity modification of the kinetic part of ordinary matter Hamiltonians. An application of the same mechanism can explain why the present day cosmological acceleration is so tiny.",

author = "Martin Bojowald",

note = "Funding Information: The author is grateful to A. Ashtekar for a careful reading of the manuscript. This work was supported in part by NSF Grant No. PHY00-90091 and the Eberly research funds of Penn State.",

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N2 - Quantum geometry predicts that a universe evolves through an inflationary phase at small volume before exiting gracefully into a standard Friedmann phase. This does not require the introduction of additional matter fields with ad hoc potentials; rather, it occurs because of a quantum gravity modification of the kinetic part of ordinary matter Hamiltonians. An application of the same mechanism can explain why the present day cosmological acceleration is so tiny.

AB - Quantum geometry predicts that a universe evolves through an inflationary phase at small volume before exiting gracefully into a standard Friedmann phase. This does not require the introduction of additional matter fields with ad hoc potentials; rather, it occurs because of a quantum gravity modification of the kinetic part of ordinary matter Hamiltonians. An application of the same mechanism can explain why the present day cosmological acceleration is so tiny.

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JO - Physical review letters

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Inflation from Quantum Geometry

Abstract

All Science Journal Classification (ASJC) codes

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