11:00-12:30,  Javier G. Subils

Title: Primordial Black Hole Formation during a Strongly Coupled Crossover

Abstract: The final mass distribution of primordial black holes is sensitive to the equation of state of the Universe at the scales accessible by the power spectrum. Motivated by the presence of phase transitions in several beyond the Standard Model theories, some of which are strongly coupled, we analyse the production of primordial black holes during such phase transitions, which we model using the gauge/gravity duality.

14:15-15:45h, Marija Tomasevic

Title: Holographic Duals to Evaporating Black Holes

Abstract: We describe the dynamical evaporation of a black hole as the classical evolution in time of a black hole in an Anti-de Sitter braneworld. A bulk black hole whose horizon intersects the brane yields the classical bulk dual of a black hole coupled to quantum conformal fields. The evaporation of this black hole happens when the bulk horizon slides off the brane, making the horizon on the brane shrink. We use a large-D effective theory of the bulk Einstein equations to solve the time evolution of these systems. With this method, we study the dual evaporation of a variety of black holes interacting with colder radiation baths. We also obtain the dual of the collapse of holographic radiation to form a black hole on the brane. Finally, we discuss the evolution of the Page curve of the radiation in our evaporation setups, with entanglement islands appearing and then shrinking during the decreasing part of the curve.  

16:00-17:30h, Antón F. Faedo

Title: A Holographic View on Monopoles and Confinement

Abstract: We present the phase diagram of a confining three-dimensional gauge theory with holographic dual corresponding to a known string theory solution. The theory possesses a global U(1) symmetry under which magnetic monopoles are charged. Introducing both temperature and an external magnetic field for monopoles one finds that there are deconfinement phase transitions as any of the two is increased, supporting monopole condensation as the possible mechanism for confinement. The transition as the magnetic field is increased is second order, providing the first example in holography of a deconfinement transition which is not first order. The phase diagram has a rich structure, with a triple point and a critical point where a line of first order transitions end. We also comment on the phase diagram at finite baryon density.