DBI equations and holographic DC conductivity

Autor: Ballon-Bayona, Alfonso, Ferreira, Cristine N., Otoya, Victor J. Vasquez

We provide a simple method for writing the Dirac-Born-Infeld (DBI) equations of a Dp-brane in an arbitrary static background whose metric depends only on the holographic radial coordinate z. Using this method we revisit the Karch-O'Bannon's procedure

Externí odkaz: http://arxiv.org/abs/1302.0802

Aspects of nonmetricity in gravity theories

Autor: Sobreiro, Rodrigo F., Otoya, Victor J. Vasquez

Publikováno v: Brazilian Journal of Physics v.40 n.4 2010
Brazilian Journal of Physics
Sociedade Brasileira de Física (SBF)
instacron:SBF
Brazilian Journal of Physics, Volume: 40, Issue: 4, Pages: 370-374, Published: DEC 2010

In this work, we show that a class of metric-affine gravities can be reduced to a Riemann-Cartan one. The reduction is based on the cancelation of the nonmetricity against the symmetric components of the spin connection. A heuristic proof, in the Ein

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e06ebe51f1b9ae67c624978464d10d44
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400002