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Quantum corrections in Galileon theories

N. Brouzakis
(
- Athens U.
)
,
A. Codello
(
- SISSA, Trieste
)
,
N. Tetradis
(
- CERN and
- Athens U.
)
,
O. Zanusso
(
- Nijmegen U., IMAPP
)

Oct 1, 2013

7 pages

Published in:

Phys.Rev.D 89 (2014) 12, 125017

Published: Jun 18, 2014

e-Print:

1310.0187 [hep-th]

DOI:

10.1103/PhysRevD.89.125017

Report number:

CERN-PH-TH-2013-286

View in:

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Abstract: (APS)

We calculate the one-loop quantum corrections in the cubic Galileon theory, by using cutoff regularization. We confirm the expected form of the one-loop effective action and that the couplings of the Galileon theory do not get renormalized. However, new terms, not included in the tree-level action, are induced by quantum corrections. We also consider the one-loop corrections in an effective brane theory, which belongs to the Horndeski or generalized Galileon class. We find that new terms are generated by quantum corrections, while the tree-level couplings are also renormalized. We conclude that the structure of the generalized Galileon theories is altered by quantum corrections more radically than that of the Galileon theory.

Note:

8 pages; v2 minor typos corrected, references added; v3 minor clarifications; v4 version published in PRD

11.10.-z
correction: quantum
Galileon
tree approximation
effective action
regularization
membrane model

References(27)

Figures(0)

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