Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-02-06
Physics
High Energy Physics
High Energy Physics - Theory
17 pages, latex, reference added
Scientific paper
A black hole-like solution to a toy model scalar field action for the pion is presented. It has a "horizon" that traps pion field information (it cannot escape in finite time) and is thermal, with a finite and calculable temperature, $T=\sqrt{2}/(\pi\alpha)$, with $\alpha$ a coupling parameter. The action is a scalar DBI action (D-brane action), coupled to a particular fixed source term. The DBI action by itself has "catenoid" solutions that have horizons with infinite temperature and trap only high energy information. It is also proven that the unique scalar action that admits thermal horizons is of DBI type at leading order, making the D-brane action special. The existence of this "pionless hole" solution means that {\em aparent} information loss is not a feature of gravity theories (via black holes), but even a simple scalar theory can exhibit it. This is as it should, since the "pionless hole" is a toy model for the AdS-CFT dual to a black hole.
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