Imperial College London
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Claudia de Rham

Faculty of Natural Sciences, Department of Physics

Professor of Theoretical Physics
 
 
 
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Contact

 

c.de-rham CV

 
 
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Location

 

H506Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Alberte:2020:10.1007/jhep01(2020)131,
author = {Alberte, L and de, Rham C and Momeni, A and Rumbutis, J and Tolley, AJ},
doi = {10.1007/jhep01(2020)131},
journal = {The Journal of High Energy Physics},
pages = {1--57},
title = {EFT of interacting spin-2 fields},
url = {http://dx.doi.org/10.1007/jhep01(2020)131},
volume = {2020},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We consider the effective field theory of multiple interacting massive spin-2 fields. We focus on the case where the interactions are chosen so that the cutoff is the highest possible, and highlight two distinct classes of theories. In the first class, the mass eigenstates only interact through potential operators that carry no derivatives in unitary gauge at leading order. In the second class, a specific kinetic mixing between the mass eigenstates is included non-linearly. Performing a decoupling and ADM analysis, we point out the existence of a ghost present at a low scale for the first class of interactions. For the second class of interactions where kinetic mixing is included, we derive the full Λ3-decoupling limit and confirm the absence of any ghosts. Nevertheless both formulations can be used to consistently describe an EFT of interacting massive spin-2 fields which, for a suitable technically natural tuning of the EFT, have the same strong coupling scale Λ3. We identify the generic form of EFT corrections in each case. By using Galileon Duality transformations for the specific case of two massive spin-2 fields with suitable couplings, the decoupling limit theory is shown to be a bi-Galileon.
AU  - Alberte,L
AU  - de,Rham C
AU  - Momeni,A
AU  - Rumbutis,J
AU  - Tolley,AJ
DO  - 10.1007/jhep01(2020)131
EP  - 57
PY  - 2020///
SN  - 1029-8479
SP  - 1
TI  - EFT of interacting spin-2 fields
T2  - The Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/jhep01(2020)131
UR  - https://link.springer.com/article/10.1007%2FJHEP01%282020%29131
UR  - http://hdl.handle.net/10044/1/77449
VL  - 2020
ER  -
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