Results 91 to 100 of about 4,373,963 (233)
Effective field theory and fundamental interactions
, 2004 There are many possible gravitational applications of an effective approach to Quantum Field Theory (QFT) in curved space. We present a brief review of effective approach and discuss its impact for such relevant issues as the cosmological constant (CC ...
Shapiro, Ilya L.
core +2 more sources
Effective field theory for top physics [PDF]
, 2012 We study the top forward-backward asymmetry (FBA $\equiv A_{\rm FB}$) reported by CDF and D0 Collaborations in the effective lagrangian approach. Using dimension-6 effective largrangians for $q \bar{q} \rightarrow t \bar{t}$, we study the $t\bar{t ...
Ko, P.
core +2 more sources
LEX-EFT: the Light Exotics Effective Field Theory
Journal of High Energy Physics, 2023 We propose the creation of a Light Exotics Effective Field Theory (LEX-EFT) catalog. LEX-EFT is a generic framework to capture all interactions between the Standard Model (SM) and all (or at least a large class of) theoretically allowed exotic states ...
Linda M. Carpenter +2 more
doaj +1 more source
Effective field theory approach to pionium [PDF]
Physical 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 +4 more sources
Towards effective topological field theory for knots
Nuclear Physics B, 2015 Construction of (colored) knot polynomials for double-fat graphs is further generalized to the case when “fingers” and “propagators” are substituting R-matrices in arbitrary closed braids with m-strands. Original version of [25] corresponds to the case m=
A. Mironov, A. Morozov
doaj +1 more source
How (not) to renormalize integral equations with singular potentials in effective field theory [PDF]
, 2018 We discuss the connection between the perturbative and non-perturbative renormalization and related conceptual issues in the few-nucleon sector of the low-energy effective field theory of the strong interactions. General arguments are supported by examples from effective theories with and without pions as dynamical degrees of freedom.
arxiv +1 more source
On expansions in neutrino effective field theory
Journal of High Energy Physics, 2017 We match the seesaw model for generating neutrino masses onto the Standard Model Effective Field Theory (SMEFT). We perform this matching at tree level up to dimension seven in the operator expansion.
Gitte Elgaard-Clausen, Michael Trott
doaj +1 more source
Effective Field Theories for the Casimir Effect at Finite Temperature [PDF]
arXiv, 2001 We discuss corrections to the Casimir effect at finite temperature and effective field theory. Recently, it has been shown that effective field theories can reproduce radiative corrections to the Casimir energy calculated in full QED. We apply effective field theory methods at finite temperature and reproduce the Casimir free energy.
arxiv
A periodic table of effective field theories [PDF]
Journal 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 +6 more sources
Effective Field Theory description of Phantom Fields [PDF]
arXiv, 2018 In this work I show that a simple Field Theory on a non trivial gauge background may behave as a phantom field and contribute to an effective $w<-1$ state equation fluid contribution to cosmology.
arxiv