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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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Effective field theories in R ξ gauges [PDF]
Journal of High Energy Physics, 2019 In effective quantum field theories, higher dimensional operators can affect the canonical normalization of kinetic terms at tree level. These contributions for scalars and gauge bosons should be carefully included in the gauge fixing procedure, in order
M. Misiak +4 more
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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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Computing tools for effective field theories [PDF]
European Physical Journal C: Particles and FieldsIn recent years, theoretical and phenomenological studies with effective field theories have become a trending and prolific line of research in the field of high-energy physics.
Jason Aebischer +32 more
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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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Effective field theories as Lagrange spaces
Journal of High Energy Physics, 2023 We present a formulation of scalar effective field theories in terms of the geometry of Lagrange spaces. The horizontal geometry of the Lagrange space generalizes the Riemannian geometry on the scalar field manifold, inducing a broad class of affine ...
Nathaniel Craig +3 more
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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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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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Renormalons in effective field theories [PDF]
Physical Review D, 1995 Minor changes ...
Luke, Michael +2 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.
J. B. Habashi, S. Fleming, U. van Kolck
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