Citation

BibTex format

@article{Gonzalez:2022:10.1103/PhysRevD.106.105018,
author = {Gonzalez, MC and de, Rham C and Pozsgay, V and Tolley, AJ},
doi = {10.1103/PhysRevD.106.105018},
journal = {Physical Review D: Particles, Fields, Gravitation and Cosmology},
pages = {1--25},
title = {Causal effective field theories},
url = {http://dx.doi.org/10.1103/PhysRevD.106.105018},
volume = {106},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Physical principles such as unitarity, causality, and locality can constrain the space of consistent effective field theories (EFTs) by imposing two-sided bounds on the allowed values of Wilson coefficients. In this paper, we consider the bounds that arise from the requirement of low energy causality alone, without appealing to any assumptions about UV physics. We focus on shift-symmetric theories, and consider bounds that arise from the propagation around both a homogeneous and a spherically symmetric scalar field background. We find that low energy causality, namely the requirement that there are no resolvable time advances within the regime of validity of the EFT, produces two-sided bounds in agreement with compact positivity constraints previously obtained from 2→2 scattering amplitude dispersion relations using full crossing symmetry.
AU  - Gonzalez,MC
AU  - de,Rham C
AU  - Pozsgay,V
AU  - Tolley,AJ
DO  - 10.1103/PhysRevD.106.105018
EP  - 25
PY  - 2022///
SN  - 1550-2368
SP  - 1
TI  - Causal effective field theories
T2  - Physical Review D: Particles, Fields, Gravitation and Cosmology
UR  - http://dx.doi.org/10.1103/PhysRevD.106.105018
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000964364500008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.106.105018
UR  - http://hdl.handle.net/10044/1/106018
VL  - 106
ER  -
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