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Extremal effective field theories [PDF]

open access: yesJournal 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
doaj   +3 more sources

Effective Field Theories [PDF]

open access: yesParticles, 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
doaj   +3 more sources

Holographic Effective Field Theories [PDF]

open access: yesJournal of High Energy Physics, 2016
We derive the four-dimensional low-energy effective field theory governing the moduli space of strongly coupled superconformal quiver gauge theories associated with D3-branes at Calabi-Yau conical singularities in the holographic regime of validity.
Martucci, Luca, Zaffaroni, Alberto
core   +3 more sources

Effective Field Theories [PDF]

open access: yes, 1992
Effective field theories encode the predictions of a quantum field theory at low energy. The effective theory has a fairly low ultraviolet cutoff.
A. Hasenfratz   +33 more
core   +6 more sources

Computing tools for effective field theories [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields
In 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
doaj   +2 more sources

Effective Field Theories and Inflation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2003
We investigate the possible influence of very-high-energy physics on inflationary predictions focussing on whether effective field theories can allow effects which are parametrically larger than order H^2/M^2, where M is the scale of heavy physics and H ...
  +89 more
core   +2 more sources

Entanglement and effective field theories

open access: yesPhysics Letters B
We 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
doaj   +3 more sources

Effective Field Theories from QCD [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1994
We present a method for extracting effective Lagrangians from QCD. The resulting effective Lagrangians are based on exact rewrites of cut-off QCD in terms of these new collective field degrees of freedom.
Sollacher, R.
core   +2 more sources

Off-shell renormalization in Higgs effective field theories

open access: yesJournal of High Energy Physics, 2018
The off-shell one-loop renormalization of a Higgs effective field theory possessing a scalar potential ∼Φ†Φ−υ22N $$ \sim {\left({\Phi}^{\dagger}\Phi -\frac{\upupsilon^2}{2}\right)}^N $$ with N arbitrary is presented. This is achieved by renormalizing the
Daniele Binosi, Andrea Quadri
doaj   +3 more sources

Effective field theories in R ξ gauges [PDF]

open access: yesJournal 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
doaj   +3 more sources

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