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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   +3 more sources

Platonic field theories [PDF]

Journal of High Energy Physics, 2019
We study renormalization group (RG) fixed points of scalar field theories endowed with the discrete symmetry groups of regular polytopes. We employ the functional perturbative renormalization group (FPRG) approach and the ϵ-expansion in d = d c − ϵ.
Riccardo Ben Alì Zinati, Alessandro Codello, Giacomo Gori   +2 more
doaj   +3 more sources

Group field theories [PDF]

Proceedings of 3rd Quantum Gravity and Quantum Geometry School — PoS(QGQGS 2011), 2011
Group field theories are particular quantum field theories defined on D copies of a group which reproduce spin foam amplitudes on a space-time of dimension D.
Krajewski, Thomas
core   +4 more sources

Noncommutative Field Theories and (Super)String Field Theories [PDF]

Particles and Fields, 2001
In this lecture notes we explain and discuss some ideas concerning noncommutative geometry in general, as well as noncommutative field theories and string field theories.
Aref'eva, I. Ya., Belov, D. M., Giryavets, A. A., Koshelev, A. S., Medvedev, P. B.   +4 more
core   +3 more sources

Interpolating String Field Theories [PDF]

Modern Physics Letters A, 1992
A minimal area problem imposing different length conditions on open and closed curves is shown to define a one parameter family of covariant open-closed quantum string field theories.
Zwiebach, Barton
core   +2 more sources

Field theories on null manifolds

Journal of High Energy Physics, 2020
We argue that generic field theories defined on null manifolds should have an emergent BMS or conformal Carrollian structure. We then focus on a simple interacting conformal Carrollian theory, viz. Carrollian scalar electrodynamics.
Arjun Bagchi, Rudranil Basu, Aditya Mehra, Poulami Nandi   +3 more
doaj   +3 more sources

Field Theory and Theories

Forum for Group Psychotherapies and Processes
The study presented in this section aims at exploring a reflection focused on the conditions of the origins and development of the Identity, in its many two-dimensional characterizations: personal/social, corporeal/mental, active/ representative ...
Daniele Reggianini
doaj   +2 more sources

Productive Imagination in Painting from Ricoeur's Point of View [PDF]

Journal of Philosophical Investigations, 2023
The study of imagination has always had a significant role in the study of art and aesthetics. And imagination plays a central role in Ricoeur's philosophical system; a subject that has received less attention.
Mohammad Sadegh Gheysari, Amir Maziar
doaj   +1 more source

The Scalar, Vector and Tensor Fields in Theory of Elasticity and Plasticity [PDF]

Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2014
This article is devoted to an analysis of scalar, vector and tensor fields, which occur in the loaded and deformed bodies. The aim of this article is to clarify and simplify the creation of an understandable idea of some elementary concepts and ...
František FOJTÍK, Radim HALAMA
doaj   +1 more source

AdS field theory from conformal field theory [PDF]

Journal of High Energy Physics, 2013
Abstract We provide necessary and sufficient conditions for a Conformal Field Theory to have a description in terms of a perturbative Effective Field Theory in AdS. The first two conditions are well-known: the existence of a perturbative ‘1/N ’ expansion and an approximate Fock space of states generated by a finite number of low ...
Fitzpatrick, A. Liam, Kaplan, Jared
openaire   +2 more sources