Theoretical Physics Colloquium by Prof. Andreas Schmitt.
This presentation was held live on August 10, 2022 as part of the theoretical physics colloquium series hosted by Prof. Igor Shovkovy at the Arizona State University. The series features high-quality interactive presentations on current advances in theoretical physics by active researchers in the field of theoretical physics.
Abstract for this presentation:
Dense matter in the interior of compact stars is notoriously difficult to treat from first principles. Several candidate phases of Quantum Chromodynamics at large baryon density are known, but the exact phase structure is poorly understood. I will discuss a strong-coupling approach based on the gauge-string duality ("holography"), in particular within the so-called Witten-Sakai-Sugimoto model. Various phases have recently been studied in this approach, such as quarkyonic matter. I will present recent results for the phase structure with arbitrary baryon and isospin chemical potentials, and I will demonstrate that realistic neutron stars can be constructed entirely from matter described by holography, including the crust of the star.