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Entanglement of spin and orbital Kondo effect is investigated on the basis ofa Kondo-type exchange model with twofold orbital degeneracy. By using Wilson'snumerical renormalization-group method, we examine dynamical and thermalproperties respecting the difference in time-reversal property of multipoleoperators. In the presence of particle-hole symmetry, the model has a newnon-Fermi-liquid fixed point with a fractional entropy. The spectral intensityof the quadrupole susceptibility diverges in the zero-frequency limit, whilethe dipole susceptibility shows a Fermi-liquid-like behavior. This isunderstood by mapping to the two-channel Kondo model, in which the dipolemoment is mapped onto the operators with the scaling dimension $\Delta_m=1$,while the quadrupole moment onto the operators with another scaling dimension$\Delta_e=1/2$. Even for a fairly particle-hole asymmetric case with theFermi-liquid ground state, the non-Fermi-liquid behavior has significantinfluences in electric and thermal properties.Comment: 7 pages, 9 figures, to appear in J. Phys Soc. Jpn. Vol. 68 No. 12,  title changed and some corrections mad

Crossover between Fermi Liquid and Non-Fermi Liquid in Orbitally Degenerate Kondo Systems