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Effective Field Theories [PDF]
Particles, 2020 This paper represents a pedagogical introduction to low-energy effective field theories. In some of them, heavy particles are “integrated out” (a typical example—the Heisenberg–Euler EFT); in some, heavy particles remain but some of their degrees of ...
Andrey Grozin
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Extremal effective field theories [PDF]
Journal of High Energy Physics, 2021 Effective field theories (EFT) parameterize the long-distance effects of short-distance dynamics whose details may or may not be known. Previous work showed that EFT coefficients must obey certain positivity constraints if causality and unitarity are ...
Simon Caron-Huot, Vincent Van Duong
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Entanglement and effective field theories
Physics Letters BWe investigate the emergence of geometric phases in chiral transformations within gauge theories coupled to fermions. We begin by analyzing the Schwinger model in (1+1) dimensions, where chiral symmetry is explicitly modified due to the dynamical ...
Jorge Gamboa
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The effective field theory of vector-tensor theories [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Abstract We investigate a systematic formulation of vector-tensor theories based on the effective field theory (EFT) approach. The input of our EFT is that the spacetime symmetry is spontaneously broken by the existence of a preferred timelike direction in accordance with the cosmological principle. After clarifying the difference of the
Aoki, Katsuki +3 more
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Nonrelativistic effective field theory with a resonance field [PDF]
The European Physical Journal A, 2021 We discuss shallow resonances in the nonrelativistic scattering of two particles using an effective field theory (EFT) that includes an auxiliary field with the quantum numbers of the resonance. We construct the manifestly renormalized scattering amplitude up to next-to-leading order in a systematic expansion.
Habashi, J.B. +2 more
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Renormalons in effective field theories [PDF]
Physical Review D, 1995 Minor changes ...
Luke, Michael +2 more
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Constructing operator basis in supersymmetry: a Hilbert series approach
Journal of High Energy Physics, 2023 In this paper we introduce a Hilbert series approach to build the operator basis for a N = 1 supersymmetry theory with chiral superfields. We give explicitly the form of the corrections that remove redundancies due to the equations of motion and ...
Antonio Delgado +2 more
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The effective field theory of inflation [PDF]
Journal of High Energy Physics, 2008 26 pages.
Cheung, Clifford +4 more
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Effective field theories [PDF]
, 2008 These lectures introduce some of the basic notions of effective field theories, as used in particle physics. The topics discussed are the $ΔS=1$ and $ΔS =2$ weak interactions, and chiral perturbation theory as applied to mesons, baryons, and hadrons containing heavy quarks.
Mack, G. +3 more
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Causal effective field theories
Physical Review D, 2022 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
Mariana Carrillo González +3 more
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