Results 81 to 90 of about 704,837 (230)

Quantum impurity models from conformal field theory [PDF]

Journal of High Energy Physics, 2019
Abstract The coupling between localized magnetic moments and itinerant electrons presents a plethora of interesting physics. The low-energy physics of some quantum impurity systems can be described using conformal field theory (CFT). In this paper, the connection between quantum impurity models and CFT is further strengthened as we
Wu, Ying-Hai, Tu, Hong-Hao
openaire   +3 more sources

No particle production in two dimensions: recursion relations and multi-Regge limit

Journal of High Energy Physics, 2019
We introduce high-energy limits which allow us to derive recursion relations fixing the various couplings of Lagrangians of two-dimensional relativistic quantum field theories with no tree-level particle production in a very straightforward way. The sine-
Barak Gabai, Dalimil Mazáč, Andrei Shieber, Pedro Vieira, Yehao Zhou   +4 more
doaj   +1 more source

Fermion geometry and the renormalization of the Standard Model Effective Field Theory

Journal of High Energy Physics, 2023
The geometry of field space governs on-shell scattering amplitudes. We formulate a geometric description of effective field theories which extends previous results for scalars and gauge fields to fermions.
Benoît Assi, Andreas Helset, Aneesh V. Manohar, Julie Pagès, Chia-Hsien Shen   +4 more
doaj   +1 more source

On gauge theories for non-semisimple groups

, 1995
We consider analogs of Yang-Mills theories for non-semisimple real Lie algebras which admit invariant non-degenerate metrics. These 4-dimensional theories have many similarities with corresponding WZW models in 2 dimensions and Chern-Simons theories in 3
A.A. Tseytfin, Abbott, Alvarez-Gaume, Antoniadis, Boulware, Cangemi, Cangemi, Cangemi, Caswell, de Wit, Deser, Deser, DeWitt, Figueroa-O'Farrill, Giavarini, Gross, Halpern, Halpern, Hooft, Ichinose, Jackiw, Jones, Kehagias, Kiritsis, Kiritsis, Knizhnik, Kogan, Kogan, Kogan, Lee, Lee, Leutwyler, McKeon, Mohammedi, Moore, Morozov, Nappi, Niemi, Olive, Pisarski, Politzer, Redlich, Schonfeld, Schwarz, Sfetsos, Sfetsos, Sfetsos, Sfetsos, Shifman, Tseytlin, Tseytlin, Weinberg, Witten, Witten   +53 more
core   +2 more sources

Flowing in Group Field Theory Space: a Review [PDF]

, 2016
We provide a non-technical overview of recent extensions of renormalization methods and techniques to Group Field Theories (GFTs), a class of combinatorially non-local quantum field theories which generalize matrix models to dimension $d \geq 3$.
Carrozza, Sylvain
core   +3 more sources

Field Theory as a Matrix Model

, 2000
A new formulation of four dimensional quantum field theories, such as scalar field theory, is proposed as a large N limit of a special NxN matrix model.
Ambjorn, Banks, Bhanot, Das, Das, David, Eguchi, Gonsález-Arroyo, Gross, Ishibashi, Ishibashi, Itzykson, Kazakov, Kazakov, Parisi, Vladimir Kazakov, Witten   +16 more
core   +2 more sources

Quantum Simulating Continuum Field Theories with Large-Spin Lattice Models

PRX Quantum
Simulating the real-time dynamics of quantum field theories (QFTs) is one of the most promising applications of quantum simulators. Regularizing a bosonic QFT for quantum simulation purposes typically involves a truncation in Hilbert space in addition to
Gabriele Calliari, Marco Di Liberto, Hannes Pichler, Torsten V. Zache   +3 more
doaj   +1 more source

PHYSICS: WHAT DOES ONE NEED TO KNOW?

Zygon, 1996
. For the basic areas of physics‐classical mechanics, classical field theories, and quantum mechanics‐there are local dynamical theories that offer complete descriptions of systems when the proper subsidiary conditions also are provided.
doaj   +2 more sources

Group field theories

, 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   +1 more source

A Plasma Analogy and Berry Matrices for Non-Abelian Quantum Hall States

, 1997
We present an approach to the computation of the non-Abelian statistics of quasiholes in quantum Hall states, such as the Pfaffian state, whose wavefunctions are related to the conformal blocks of minimal model conformal field theories.
Arovas, Blok, Chetan Nayak, Dotsenko, Dotsenko, Felder, Girvin, Laughlin, Mathur, Moore, Nayak, Read, Victor Gurarie, Wen, Wen, Wen, Wen, Wilczek, Witten, Zhang   +19 more
core   +1 more source