Results 71 to 80 of about 2,649,928 (108)

Instanton liquid properties from lattice QCD

Journal of High Energy Physics, 2018
We examined the instanton contribution to the QCD configurations generated from lattice QCD for N F = 0, N F = 2 + 1 and N F = 2 + 1 + 1 dynamical quark flavors from two different and complementary approaches.
A. Athenodorou, Ph. Boucaud, F. De Soto, J. Rodríguez-Quintero, S. Zafeiropoulos   +4 more
doaj   +1 more source

On Instantons in Holographic QCD [PDF]

arXiv, 2007
We examine instantons and solitons of the effective action of probe D8-branes in the background of $N_c$ D4-branes which has served as a holographic description of QCD. We show that the 4d instantons sit at the minimum of the Euclidean 5d action. Restricting to the static solitons of the five-dimensional model we are led to consider monopoles in a 3 ...
arxiv  

Moduli spaces of instantons in flag manifold sigma models. Vortices in quiver gauge theories

Journal of High Energy Physics
In this paper, we discuss lumps (sigma model instantons) in flag manifold sigma models. In particular, we focus on the moduli space of BPS lumps in general Kähler flag manifold sigma models. Such a Kähler flag manifold, which takes the form U n 1 + ⋯ + n
Toshiaki Fujimori, Muneto Nitta, Keisuke Ohashi   +2 more
doaj   +1 more source

Solitons and Other Extended Field Configurations [PDF]

arXiv, 2005
Article for the forthcoming Encyclopedia of Mathematical Physics, to be published by Elsevier. Covers kinks & breathers, sigma-models & Skyrmions, abelian-Higgs vortices, monopoles, Yang-Mills instantons, and Q-balls.
arxiv  

Transplanckian censorship and global cosmic strings

Journal of High Energy Physics, 2017
Large field excursions are required in a number of axion models of inflation. These models also possess global cosmic strings, around which the axion follows a path mirroring the inflationary trajectory. Cosmic strings are thus an interesting theoretical
Matthew J. Dolan, Patrick Draper, Jonathan Kozaczuk, Hiren Patel   +3 more
doaj   +1 more source

TASI Lectures on Solitons [PDF]

arXiv, 2005
These lectures cover aspects of solitons with focus on applications to the quantum dynamics of supersymmetric gauge theories and string theory. The lectures consist of four sections, each dealing with a different soliton. We start with instantons and work down in co-dimension to monopoles, vortices and, eventually, domain walls.
arxiv  

Instanton and QCD-monopole Trajectory in the Abelian Dominating System [PDF]

arXiv, 1995
Correlation between instantons and QCD-monopoles is studied in the abelian-gauge-fixed QCD. From a simple topological consideration, instantons are expected to appear only around the QCD-monopole trajectory in the abelian-dominating system. The QCD-monopole in the multi-instanton solution is studied in the Polyakov-like gauge, where $A_4(x)$ is ...
arxiv  

Cosmic string in Abelian-Higgs model with enhanced symmetry - Implication to the axion domain-wall problem. [PDF]

J High Energy Phys, 2020
Hiramatsu T, Ibe M, Suzuki M.
europepmc   +1 more source

Zero modes of Overlap fermions, instantons, and monopoles [PDF]

PoS (LATTICE2014) 341, 2014
The purpose of this study is to investigate the relations between instantons, monopoles, and Chiral symmetry breaking. The monopoles are important topological configurations existing in QCD which are believed to produce colour confinement. The groups of University of Kanazawa and Pisa have produced by Lattice simulations many results supporting the ...
arxiv  

JNR Skyrmions

Journal of High Energy Physics
The JNR ansatz provides a simple formula to obtain families of charge N self-dual SU(2) Yang-Mills instantons in four-dimensional Euclidean space, from the free data of N + 1 distinct points with associated positive weights.
Paul Sutcliffe
doaj   +1 more source