R-invariant topological inflation

We propose a topological inflation model in the framework of supergravity w ith R invariance. This topological inflation model is not only free from th e initial value problem of the inflaton field but also gives a low reheatin g temperature, which is favored in supergravity, since in this case the ove rproduction of gravitinos is avoided. Furthermore, the predicted spectrum o f the density fluctuations is found to be generally tilted. This result can be tested by future observations concerning CMB anisotropies and the large scale structure of the universe.