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Critical behaviour in random field gauge theory |
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| Authors: | C Guiot E Kehl H Satz B Waltl |
| Institution: | 1. INFN, Università di Torino, I-10100, Torino, Italy 2. Fakult?t für Physik, Universit?t Bielefeld, D-4800, Bielefeld, Federal Republic of Germany 3. Physics Department, Brookhaven National Laboratory, 11973, Upton, NY, USA |
| Abstract: | We study the thermodynamic behaviour of spin and gauge systems in the presence of a quenched external random field. In particular, we show that forZ(2) andSU (2) gauge theory in two space dimensions, the random field destroys the ordered phase and thus leads to a shift in the lower critical dimension, just as found for the corresponding Ising model. |
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