ar X iv : c on d - m at / 0 11 04 95 v 2 2 4 O ct 2 00 1 On Low - temperature Dephasing by Electron - electron Interaction ∗

ar X iv : c on d - m at / 0 11 04 95 v 1 2 3 O ct 2 00 1 On Low - temperature Dephasing by Electron - electron Interaction ∗

The quantum coherence of electrons can be probed by studying weak localization corrections to the conductivity. Interaction effects lead to dephasing, with electron-electron interactions being the important intrinsic mechanism. A controversy exists whether or not the dephasing rate, as measured in a weak localization experiment, vanishes at low temperatures. We review the non-perturbative analy...

ar X iv : h ep - l at / 0 11 00 06 v 1 2 O ct 2 00 1 1 Matrix elements of ∆ S = 2 operators with Wilson fermions

ar X iv : h ep - l at / 0 11 00 06 v 2 3 O ct 2 00 1 1 Matrix elements of ∆ S = 2 operators with Wilson fermions

ar X iv : h ep - t h / 04 10 18 8 v 1 18 O ct 2 00 4 Spacetime quantization induced by axial currents

ar X iv : 0 71 0 . 04 88 v 1 [ he p - la t ] 2 O ct 2 00 7 On the ratio of string tensions in the 3 D Z 4 lattice gauge theory

It was recently pointed out that simple scaling properties of Polyakov correlation functions of gauge systems in the confining phase suggest that the ratios of k-string tensions in the low temperature region is constant up to terms of order T 3. Here we argue that, at least in a three-dimensional Z4 gauge model, the above ratios are constant in the whole confining phase. This result is obtained...