Phase structure of the Z(2) gauge and matter theory

D. Horn*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We discuss the Z(2) theory using a hamiltonian formulation and emphasize the roles of gauge invariance and duality. Whereas the phases of the pure gauge theory can be characterized as electric-or magnetic-confining, one finds that in the presence of matter the two resulting phases can be characterized as matter-or gauge-screening. We investigate their properties by considering the exact vacua at the limiting points of the parameter space. Using such vacua in a mean-field approach we display the existence of a finite line of first-order phase transitions in the matter-screening phase and discuss its physical meaning.

Original languageEnglish
Pages (from-to)103-107
Number of pages5
JournalPhysics Reports
Issue number1
StatePublished - Dec 1980


FundersFunder number
Israel Commission for Basic Research & U.S.-Israel Bi-National Science Foundation
United States-Israel Binational Science Foundation


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