6 papers
Higher derivative holography and temperature dependence of QGP viscosities
Thomas Apostolidis, Umut Gürsoy, Edwan Préau
Recent Bayesian analyses of heavy ion collision data have established a non-trivial temperature dependence of the shear and bulk viscosity per entropy. Motivated by this, we consid…
Mutual information from modular flow in CFTs
Cesar A. Agon, Horacio Casini, Umut Gürsoy +1
The operator product expansion (OPE) of twist operators in the replica trick framework enables a long-distance expansion of the mutual information (MI) in conformal field theories…
A supersymmetric spin current
Casey Cartwright, Domingo Gallegos, Umut Gürsoy +2
We study the supersymmetric structure of the spin current in four dimensional supersymmetric theories. By coupling the stress tensor multiplet to a vierbein multipl…
Perturbing a quantum black hole
Casey Cartwright, Umut Gürsoy, Juan F. Pedraza +1
We analyze the analytic structure of correlators in the field theory dual to the quantum Bañados-Teitelboim-Zanelli (qBTZ) black hole, a braneworld model incorporating exact backr…
Quantum induced superradiance
Casey Cartwright, Umut Gürsoy, Juan F. Pedraza +1
Superradiance, the phenomenon enabling energy extraction through radiation amplification, is not universal to all black holes. We show that semi-classical backreaction can induce s…
Universal rapidity scaling of entanglement entropy inside hadrons from conformal invariance
Umut Gürsoy, Dmitri E. Kharzeev, Juan F. Pedraza
When a hadron is probed at high energy, a nontrivial quantum entanglement entropy inside the hadron emerges due to the lack of complete information about the hadron wave function e…