Thermoelectric effects in a Luttinger liquid (LL) wire adiabatically connec
ted to the leads of noninteracting electrons are considered. For a multicha
nnel LL a staircase-like behavior of the thermal conductance as a function
of chemical potential is found. The thermopower for a LL wire with an impur
ity is evaluated for two cases: (i) LL constriction, and (ii) infinite LL w
ire. We show that the thermopower is described a Mott-like formula renormal
ized by an interaction-dependent factor. For an infinite LL the renormaliza
tion factor decreases with increase of the interaction. However, for a real
istic situation, when a LL wire is connected to the leads of noninteracting
electrons (LL constriction), the repulsive electron-electron interaction e
nhances the thermopower. A nonlinear Peltier effect in a LL is briefly disc
ussed. (C) 2001 American Institute of Physics.