Results 11 to 20 of about 2,908,361 (369)

Computing tools for effective field theories: SMEFT-Tools 2022 Workshop Report, 14-16th September 2022, Zürich. [PDF]

open access: yesEur Phys J C Part Fields, 2023
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.
Aebischer J   +32 more
europepmc   +4 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 freedom are “integrated out” (Bloch–Nordsieck EFT).
Andrey Grozin
openaire   +4 more sources

Causal effective field theories [PDF]

open access: yesPhysical 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
openaire   +5 more sources

Holographic Schwinger-Keldysh effective field theories [PDF]

open access: yesJournal of High Energy Physics, 2019
We construct a holographic dual of the Schwinger-Keldysh effective action for the dissipative low-energy dynamics of relativistic charged matter at strong coupling in a fixed thermal background.
Jan de Boer   +2 more
doaj   +2 more sources

Soft bootstrap and effective field theories [PDF]

open access: yesJournal of High Energy Physics, 2019
The soft bootstrap program aims to construct consistent effective field theories (EFT’s) by recursively imposing the desired soft limit on tree-level scattering amplitudes through on-shell recursion relations.
Ian Low, Zhewei Yin
doaj   +2 more sources

Effective field theories [PDF]

open access: green, 2008
These lectures introduce some of the basic notions of effective field theories, as used in particle physics. The topics discussed are the $ S=1$ and $ S =2$ weak interactions, and chiral perturbation theory as applied to mesons, baryons, and hadrons containing heavy quarks.
Aneesh V. Manohar
openaire   +7 more sources

Relativistic Corrections to Nonrelativistic Effective Field Theories [PDF]

open access: yesPhysical Review D, 2018
In this paper we develop a formalism for studying the nonrelativistic limit of relativistic field theories in a systematic way. By introducing a simple, nonlocal field redefinition, we transform a given relativistic theory, describing a real, self ...
Guth, Alan H.   +2 more
core   +4 more sources

Stochastic Behavior of Effective Field Theories Across Threshold [PDF]

open access: green, 1996
We explore how the existence of a field with a heavy mass influences the low energy dynamics of a quantum field with a light mass by expounding the stochastic characters of their interactions which take on the form of fluctuations in the number of (heavy
A. J. Leggett   +96 more
core   +2 more sources

A periodic table of effective field theories [PDF]

open access: yesJournal of High Energy Physics, 2017
We systematically explore the space of scalar effective field theories (EFTs) consistent with a Lorentz invariant and local S-matrix. To do so we define an EFT classification based on four parameters characterizing 1) the number of derivatives per interaction, 2) the soft properties of amplitudes, 3) the leading valency of the interactions, and 4) the ...
Cheung, Clifford   +4 more
openaire   +7 more sources

Effective field theory approach to pionium [PDF]

open access: greenPhysical Review D, 2000
24 pages, 4 figures, uses feynmf.sty and feynmf.mf, minor corrections in a few formulas, the text and ...
Eiras, Dolors, Soto Riera, Joan
openaire   +6 more sources

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