Thermodynamics of warped AdS3_3 black hole in the brick wall method

The statistical entropy of a scalar field on the warped AdS$_3$ black hole in the cosmological topologically massive gravity is calculated based on the brick-wall method, which is different from the Wald's entropy formula giving the modified area law due to the higher-derivative corrections in that the entropy still satisfies the area law. It means that the entropy for scalar excitations on this background is independent of higher-order derivative terms or the conventional brick wall method has some limitations to take into account the higher-derivative terms.Comment: 12 pages, 1 figure; v2. to appear in Phys. Lett. B; v3. typos correcte

Note on cosmology of dimensionally reduced gravitational Chern-Simons

We present cosmological solutions from the dimensionally reduced Chern-Simons term and obtain the smooth transition solution from the decelerated phase (AdS) to the accelerated phase (dS).Comment: 3 pages, minor changes, references added, version to appear in PR