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Consistency of matter models with asymptotically safe quantum gravity

P. Donà
(
- SISSA, Trieste and
- INFN, Trieste
)
,
Astrid Eichhorn
(
- Perimeter Inst. Theor. Phys.
)
,
Roberto Percacci
(
- INFN, Trieste and
- SISSA, Trieste
)

Oct 16, 2014

7 pages

Part of Proceedings, Satellite Conference on Theory Canada 9 : Waterloo, Canada, June 12-15, 2014, 988-994

Published in:

Can.J.Phys. 93 (2015) 9, 988-994

Contribution to:

Satellite Conference on Theory Canada 9, 988-994

Published: Feb 18, 2015

e-Print:

1410.4411 [gr-qc]

DOI:

10.1139/cjp-2014-0574

View in:

ADS Abstract Service

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Abstract: (NRC Research Press)

We discuss the compatibility of quantum gravity with dynamical matter degrees of freedom. Specifically, we present bounds we obtained in Donà et al. (Phys. Rev. D, 89, 084035 (2014) doi:10.1103/PhysRevD.89.084035) on the allowed number and type of matter fields within asymptotically safe quantum gravity. As a novel result, we show bounds on the allowed number of spin-3/2 (Rarita–Schwinger) fields (e.g., the gravitino). These bounds, obtained within truncated renormalization group flows, indicate the compatibility of asymptotic safety with the matter fields of the standard model. Further, they suggest that extensions of the matter content of the standard model are severely restricted in asymptotic safety. This means that searches for new particles at colliders could provide experimental tests for this particular approach to quantum gravity.

Note:

prepared for the proceedings of Theory Canada 9; new results on the gravitino, 8 pages, 1 figure, 1 table

04.60.-m
04.60.Bc
04.65.+e
11.10
renormalization group: flow
quantum gravity
asymptotic safety
Rarita-Schwinger equation
new particle
gravitation

References(42)

Figures(1)

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(
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- INFN, Trieste
)
,
Astrid Eichhorn
(
- Perimeter Inst. Theor. Phys.
)
,
Roberto Percacci
(
- SISSA, Trieste and
- INFN, Trieste
)

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•
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•
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(
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,
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)

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