A measure of conductivity for lattice fermions at finite density



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Alonso, J. L. and Fernández Pérez, Luis Antonio and Martín Mayor, Víctor (2000) A measure of conductivity for lattice fermions at finite density. Physics letters B, 480 (3-4). pp. 392-398. ISSN 0370-2693

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Official URL: http://doi.org/10.1016/S0370-2693(00)00398-1


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.

Item Type:Article
Additional Information:

© 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.

Uncontrolled Keywords:Gross-Neveu model; Chiral-symmetry restoration; Temperature.
Subjects:Sciences > Physics
Sciences > Physics > Physics-Mathematical models
ID Code:40448
Deposited On:19 Dec 2016 08:13
Last Modified:19 Dec 2016 08:13

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