6 papers
The black hole S-matrix in gauge/gravity duality
Emil J. Martinec
A variety of examples of gauge/gravity duality have a Coulomb branch for the gauge theory dynamics. We exploit this feature to construct an S-matrix, in which the initial state is…
BPS Fivebrane Stars and BTZ Black Holes
Emil J. Martinec, Yoav Zigdon
We construct a large new class of BPS supergravity solutions parametrized by arbitrary chiral wave profiles on fundamental string and Neveu-Schwarz fivebrane sources. The effective…
On the string theory of a single NS5-brane
Andrea Dei, Emil J. Martinec
We formulate a worldsheet description of string theory in the background of a single decoupled NS5-brane, which is a particularly simple example of ``little string'' holography. Th…
Effective Microstructure
Iosif Bena, Raphaël Dulac, Emil J. Martinec +3
In AdS/CFT duality, there are large families of smooth, horizonless microstate geometries that correspond to heavy pure states of the dual CFT. The metric and fluxes are co…
Cogito, ergo - strings: Supersymmetric ergoregions and their stringy excitations
Emil J. Martinec, Stefano Massai, David Turton
Supergravity solutions describing supersymmetric rotating bound states of NS fivebranes, fundamental strings and momentum can sometimes have an ergoregion but no horizon. In such s…
BPS Fivebrane Stars III: Effective Actions
Emil J. Martinec, Yoav Zigdon
An effective action for NS5-branes coupled to supergravity is used to derive the full 10d form of horizon-free BPS solutions of fivebranes carrying momentum waves, including both t…