Results 11 to 20 of about 115,577 (299)
Effective field theories in R ξ gauges [PDF]
Journal 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 +7 more sources
Effective Field Theories [PDF]
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 +4 more sources
Extremal effective field theories [PDF]
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 +4 more sources
Effective field theories as Lagrange spaces [PDF]
Journal of High Energy Physics, 2023 We present a formulation of scalar effective field theories in terms of the geometry of Lagrange spaces. The horizontal geometry of the Lagrange space generalizes the Riemannian geometry on the scalar field manifold, inducing a broad class of affine ...
Nathaniel Craig +3 more
doaj +6 more sources
Computing tools for effective field theories [PDF]
European Physical Journal C: Particles and FieldsIn 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 +3 more sources
Entanglement and effective field theories
Physics Letters BWe 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 +4 more sources
Effective Field Theories [PDF]
, 1992 Effective field theories encode the predictions of a quantum field theory at low energy. The effective theory has a fairly low ultraviolet cutoff.
T. Kalkreuter +7 more
core +3 more sources
Effective field theories on solitons of generic shapes
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2015 A class of effective field theories for moduli or collective coordinates on solitons of generic shapes is constructed. As an illustration, we consider effective field theories living on solitons in the O(4) non-linear sigma model with higher-derivative ...
Gudnason, Sven Bjarke +4 more
core +2 more sources
Effective field theories [PDF]
, 2013 This book is a broad-based text intended to help the growing student body interested in topics such as gravitational effective theories, supersymmetric effective theories, applications of effective theory techniques to problems in condensed matter ...
Blechman, Andrew E, Petrov, Alexey A
core +2 more sources
The effective field theory of vector-tensor theories [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Abstract We investigate a systematic formulation of vector-tensor theories based on the effective field theory (EFT) approach. The input of our EFT is that the spacetime symmetry is spontaneously broken by the existence of a preferred timelike direction in accordance with the cosmological principle. After clarifying the difference of the
Aoki, Katsuki +3 more
openaire +3 more sources