TRANSVERSE TRANSPORT IN COUPLED STRONGLY CORRELATED ELECTRONIC CHAINS

One-particle interchain hopping in a system of coupled Luttinger liqui ds is investigated by use of exact diagonalizations techniques [1]. We give numerical evidence that inter-chain coherent hopping (defined by a nonvanishing splitting) can be totally suppressed for the Luttinger liquid exponent alpha similar to 0.4 or even smaller alpha values. Th e transverse conductivity is shown to exhibit a strong incoherent part even when coherent inter-chain hopping is believed to occur. Implicat ions for the optical experiments in quasi-1D organic or high-T-c super conductors is outlined.