skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Creation and evolution of magnetic helicity

Abstract

Projecting a non-Abelian SU(2) vacuum gauge field--a pure gauge constructed from the group element U--onto a fixed (electromagnetic) direction in isospace gives rise to a nontrivial magnetic field, with nonvanishing magnetic helicity, which coincides with the winding number of U. Although the helicity is not conserved under Maxwell (vacuum) evolution, it retains one-half its initial value at infinite time. (c) 2000 The American Physical Society.

Authors:
 [1];  [2]
  1. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)
  2. Physics Department, Boston University, Boston, Massachusetts 02215 (United States)
Publication Date:
OSTI Identifier:
20216449
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 10; Other Information: PBD: 15 May 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUANTUM FIELD THEORY; HELICITY; GAUGE INVARIANCE; SU-2 GROUPS; VACUUM STATES; MAGNETIC FIELDS; THEORETICAL DATA

Citation Formats

Jackiw, R., and Pi, So-Young. Creation and evolution of magnetic helicity. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.105015.
Jackiw, R., & Pi, So-Young. Creation and evolution of magnetic helicity. United States. doi:10.1103/PhysRevD.61.105015.
Jackiw, R., and Pi, So-Young. Mon . "Creation and evolution of magnetic helicity". United States. doi:10.1103/PhysRevD.61.105015.
@article{osti_20216449,
title = {Creation and evolution of magnetic helicity},
author = {Jackiw, R. and Pi, So-Young},
abstractNote = {Projecting a non-Abelian SU(2) vacuum gauge field--a pure gauge constructed from the group element U--onto a fixed (electromagnetic) direction in isospace gives rise to a nontrivial magnetic field, with nonvanishing magnetic helicity, which coincides with the winding number of U. Although the helicity is not conserved under Maxwell (vacuum) evolution, it retains one-half its initial value at infinite time. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.105015},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 10,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}