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Computing tools for effective field theories [PDF]

European 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, Matteo Fael, Javier Fuentes-Martìn, Anders Eller Thomsen, Javier Virto, Lukas Allwicher, Supratim Das Bakshi, Hermès Bélusca-Maïto, Jorge de Blas, Mikael Chala, Juan Carlos Criado, Athanasios Dedes, Renato M. Fonseca, Angelica Goncalves, Amon Ilakovac, Matthias König, Sunando Kumar Patra, Paul Kühler, Marija Mador-Božinović, Mikołaj Misiak, Víctor Miralles, Ignacy Nałȩcz, Méril Reboud, Laura Reina, Janusz Rosiek, Michal Ryczkowski, José Santiago, Luca Silvestrini, Peter Stangl, Dominik Stöckinger, Peter Stoffer, Avelino Vicente, Matthias Weißwange   +32 more
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Effective Field Theories from QCD [PDF]

, 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

Journal 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

Extremal effective field theories

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
doaj   +1 more source

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, Adam Martin, Runqing Wang   +2 more
doaj   +1 more source

Effective Field Theories

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
doaj   +1 more source

Spin supplementary condition in quantum field theory: covariant SSC and physical state projection

Journal of High Energy Physics, 2023
The spin supplementary conditions are constraints on spin degrees of freedom in classical relativity which restricts physical degrees of freedom to rotations.
Jung-Wook Kim, Jan Steinhoff
doaj   +1 more source

Bell violation in 2 → 2 scattering in photon, gluon and graviton EFTs

Journal of High Energy Physics, 2023
In this paper, we explore Bell inequality violation for 2 → 2 scattering in Effective Field Theories (EFTs) of photons, gluons, and gravitons. Using the CGLMP Bell parameter (I 2), we show that, starting from an appropriate initial non-product state, the
Diptimoy Ghosh, Rajat Sharma
doaj   +1 more source

Amplitude’s positivity vs. subluminality: causality and unitarity constraints on dimension 6 & 8 gluonic operators in the SMEFT

Journal of High Energy Physics, 2023
We derive the causality and unitarity constraints on dimension 6 and dimension 8 Gluon field strength operators in the Standard Model Effective Field Theory (SMEFT). In the first part of the paper, we use the ‘amplitude analysis’ i.e. dispersion relation
Diptimoy Ghosh, Rajat Sharma, Farman Ullah   +2 more
doaj   +1 more source

Holographic Effective Field Theories [PDF]

, 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   +1 more source