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Deformed spaces and loop cosmology

Marco Valerio Battisti

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The non-singular bouncing solution of loop quantum cosmology is reproduced by a deformed minisuperspace Heisenberg algebra. This algebra is a realization of the Snyder space, is almost unique and is related to the k-Poincaré one. Since the sign of the deformation parameter it is not fixed, the Friedmann equation of braneworlds theory can also be obtained. Moreover, the sign is the only freedom in the picture and these frameworks are the only ones which can be reproduced by our deformed scheme. A generalized uncertainty principle for loop quantum cosmology is also proposed.


PACS

98.80.Qc Quantum cosmology

04.60.Pp Loop quantum gravity, quantum geometry, spin foams

02.10.-v Logic, set theory, and algebra

11.25.Wx String and brane phenomenology

95.30.Sf Relativity and gravitation

Subjects

Mathematical physics

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 1 (2009)



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