Massless entanglement islands in cone holography

A bstract It is controversial whether entanglement islands can exist in massless gravity theories. Recently, it found that the island appears wedge holography with DGP on branes. In this paper, we generalize discussions to codim-n named cone holography. For simplicity, focus case a codim-2 E brane and codim-1 Q brane. We discuss effective action, mass spectrum holographic entropy for terms. verify there branes, recover non-trivial Page curves. Besides, work out parameter space which allows Compared holography, are several new features. First, one not add That because energy density has be constant branes Einstein bulk. Second, Hartman- Maldacena surface ends only Third, Hartman-Maldacena defined finite time. notice unusual situation also AdS/dCFT even AdS/CFT. Fortunately, does affect curve since happens after Our results provide more support consistent