On the Significance of the Vector Potential Squared
Abstract
We consider the gauge potential A and argue that the minimum value of the volume integral of A^{2} (in Euclidean space) may have physical meaning, particularly in connection with the existence of topological structures. A lattice simulation comparing compact and noncompact ``photodynamics'' shows a jump in this quantity at the phase transition, supporting this idea.
 Publication:

Physical Review Letters
 Pub Date:
 March 2001
 DOI:
 10.1103/PhysRevLett.86.2220
 arXiv:
 arXiv:hepph/0010057
 Bibcode:
 2001PhRvL..86.2220G
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Theory;
 Quantum Physics
 EPrint:
 6 pages, one figure