RT Journal Article
T1 A measure of conductivity for lattice fermions at finite density
A1 Alonso, J. L.
A1 Fernández Pérez, Luis Antonio
A1 Martín Mayor, Víctor
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 fermions. The numerical method is generalizable to systems with dynamical interactions where no analytical approach is possible.
PB Elsevier Science BV
SN 0370-2693
YR 2000
FD 2000-05-11
LK https://hdl.handle.net/20.500.14352/60067
UL https://hdl.handle.net/20.500.14352/60067
LA eng
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NO © 2000 Elsevier Science B.V. This work was triggered during a discussion with F. Guinea to whom we are indebted for many suggestions, discussions and bibliographical help. The numerical calculations have being carried-out in the RTNN machines at the universities of Zaragoza and Complutense de Madrid. This work has been partially supported by CICYT, contracts AEN97- 1680,1693,1708.
NO CICYT, Spain
DS Docta Complutense
RD 28 abr 2024