2003/10/31 by G. B. Lesovik, A. V. Lebedev, G. Blatter
Computer Science · Physics and Astronomy · #Biology #Cell biology #Condensed matter physics #Function (biology) #Geology #Mesoscopic physics #Nonlinear Dynamics and Pattern Formation #Physics #Quantum Information and Cryptography #Quantum Mechanics and Applications #cond-mat.mes-hall #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physrevb.71.125313
published as Phys. Rev. B 71, 125313 (2005) · 7 pages, 2 fugures
arxiv created 2005/01/15 · openalex publication_date 2005/03/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We determine the nonlocal in time and space current-current cross correlator ⟨\stackrel\ifmmode \else \\fiI(x1,t1)\stackrel\ifmmode \else \\fiI(x2,t2)⟩ in a mesoscopic conductor with a scattering center at the origin. Its excess part appearing at finite voltage exhibits a unique dependence on the retarded variable t1\ensuremath-t2\ensuremath-(\ensuremath|x1\ensuremath|\ensuremath-\ensuremath|x2\ensuremath|)∕vF, with vF the Fermi velocity. The nonmonotonic dependence of the retardation on x1 and its absence at the symmetric position x1=\ensuremath-x2 is a signature of an instantaneous wave function collapse, which thus becomes amenable to observation in a mesoscopic solid state device.