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Effective Field Theories [PDF]

open access: yes, 2008
Effective field theories encode the predictions of a quantum field theory at low energy. The effective theory has a fairly low ultraviolet cutoff. As a result, loop corrections are small, at least if the effective action contains a term which is quadratic in the fields, and physical predictions can be read straight from the effective Lagrangean ...
Mack, G.   +3 more
openaire   +4 more sources

Renormalons in effective field theories [PDF]

open access: yesPhysical Review D, 1995
Minor changes ...
Aneesh V. Manohar   +2 more
openaire   +3 more sources

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

open access: yesJournal 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

The effective field theory of inflation [PDF]

open access: yesJournal of High Energy Physics, 2008
26 pages.
Cheung, Clifford   +4 more
openaire   +5 more sources

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

open access: yesJournal 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

On the development of effective field theory [PDF]

open access: yesThe European Physical Journal H, 2021
AbstractEditor’s note: One of the most important developments in theoretical particle physics at the end of the 20th century and beginning of the twenty-first century has been the development of effective field theories (EFTs). Pursuing an effective field theory approach is a methodology for constructing theories, where a set of core principles is ...
openaire   +3 more sources

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

open access: yesJournal 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   +2 more
doaj   +1 more source

The bases of effective field theories [PDF]

open access: yesNuclear Physics B, 2013
v2:Revised to include additional references, comments on renormalization, other minor changes.
Martin B. Einhorn   +2 more
openaire   +3 more sources

Effective field theories and inflationary magnetogenesis

open access: yesPhysics Letters B, 2021
The effective approach is applied to the analysis of inflationary magnetogenesis. Rather than assuming a particular underlying description, all the generally covariant terms potentially appearing with four space-time derivatives in the effective action ...
Massimo Giovannini
doaj   +1 more source

A Lagrangian effective field theory [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2015
19 pages, 3 ...
Vlah, Zvonimir   +2 more
openaire   +5 more sources

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