TY - JOUR AU - Alonso, J. L. AU - Fernández Pérez, Luis Antonio AU - Martín Mayor, Víctor PY - 2000 DO - 10.1016/S0370-2693(00)00398-1 SN - 0370-2693 UR - https://hdl.handle.net/20.500.14352/60067 T2 - Physics letters B AB - We study the linear response to an external electric field of a system of fermions in a lattice at zero temperature. This allows to measure numerically the Euclidean conductivity which turns out to be compatible with an analytical calculation for free... LA - eng M2 - 392 PB - Elsevier Science BV KW - Gross-Neveu model KW - Chiral-symmetry restoration KW - Temperature. TI - A measure of conductivity for lattice fermions at finite density TY - journal article VL - 480 ER -