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The spectral functions of tJ and tJ_{XY} models in the limit of J/t-> 0 andat finite temperatures T>>t are calculated using the spin-charge factorizedwave function. We find that the Luttinger-liquid like scaling behavior for afinite system with L sites is restricted below temperatures of the order T =J/L. We also observe weight redistribution in the photoemission spectralfunction in the energy range t, which is much larger than the temperature.Comment: revtex, 4 pages, 3 eps figure

Finite-temperature spectral functions of strongly correlated one-dimensional electron systems