Results 11 to 20 of about 2,133,710 (299)
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 +2 more
doaj +3 more sources
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. +4 more
core +3 more sources
Forum for Group Psychotherapies and ProcessesThe 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
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
Noncommutative field theory [PDF]
Reviews of Modern Physics, 2001 We review the generalization of field theory to space-time with noncommuting coordinates, starting with the basics and covering most of the active directions of research. Such theories are now known to emerge from limits of M theory and string theory, and to describe quantum Hall states.
Douglas, Michael R., Nekrasov, Nikita A.
openaire +2 more sources
FROM EUCLIDEAN FIELD THEORY TO QUANTUM FIELD THEORY [PDF]
Reviews in Mathematical Physics, 1999 In order to construct examples for interacting quantum field theory models, the methods of Euclidean field theory turned out to be powerful tools since they make use of the techniques of classical statistical mechanics. Starting from an appropriate set of Euclidean n-point functions (Schwinger distributions), a Wightman theory can be reconstructed by
openaire +2 more sources
International Journal of Modern Physics A, 2005 The scope of this review is to give a pedagogical introduction to some new calculations and methods developed by the author in the context of quantum groups and their applications. The review is self-contained and serves as a "first aid kit" before one ventures into the beautiful but bewildering landscape of Woronowicz's theory.
openaire +1 more source
Journal of High Energy Physics, 2009 The zero modes of closed strings on a torus --the torus coordinates plus dual coordinates conjugate to winding number-- parameterize a doubled torus. In closed string field theory, the string field depends on all zero-modes and so can be expanded to give an infinite set of fields on the doubled torus.
Hull, Chris, Zwiebach, Barton
openaire +5 more sources
Renormalons in integrable field theories
Journal of High Energy Physics, 2020 In integrable field theories in two dimensions, the Bethe ansatz can be used to compute exactly the ground state energy in the presence of an external field coupled to a conserved charge.
Marcos Mariño, Tomás Reis
doaj +1 more source