Microscopic quantum int eractions between elementary particles control transport in macroscopic st ates of matter\, such as in fluids and plasmas. In numerous states of inte rest\, these microscopic interactions are strong\, including in water\, am ong electrons in graphene and in quark-gluon plasma &mdash\; a state of nu clear matter that filled the early Universe and that is currently being re created in particle colliders. While macroscopic theories describing the d ynamics of such states\, in particular\, hydrodynamics (of fluids) and mag netohydrodynamics (of magnetized plasmas) have been partially understood\, a full description of transport also requires a certain microscopic knowl edge of its underlying quantum physics. After more than a century of strik ing advance in quantum theories\, our theoretical understanding of these m icroscopic processes remains mostly limited to states with weak interactio ns. Recently\, however\, string theory also enabled explorations of strong ly interacting states through the mathematical statement of holographic du ality\, which translates otherwise intractable problems into simpler analy ses of black holes and gravitational waves. \; \; \;

\n\nIn my talk\, I will first discuss new aspects of the macroscopic theory of hydrodynamics\, focusing on the properties of the infinite seri es of higher-order corrections to the infamous Navier-Stokes equations. By using a novel concept of generalized global symmetries\, which can encode the fact that the number of magnetic flux lines in Nature is conserved\, I will then describe the construction of a new\, comprehensive theory of m agnetohydrodynamics. This reformulation has led to a number of general the oretical and experimental predictions for transport in magnetized plasmas. I will then move on to discuss the microscopic physics responsible for tr ansport in strongly interacting states. Beginning with an introduction of holographic duality\, this section will summarize holographic insights int o the problem of the &ldquo\;unreasonable effectiveness of hydrodynamics&r dquo\; for the description of quark-gluon plasma. Then\, I will discuss ho w the descriptions of microscopic physics and transport transition between strongly and weakly interacting pictures. Finally\, by utilizing the math ematical structure behind our new theory of magnetohydrodynamics\, a holog raphic dual of magnetized plasmas will be presented along with the first a nalyses of strongly interacting magnetized transport.

\n DTSTART:20200115T203000Z LOCATION:Physics Building\, Room 204 SUMMARY:The holographic view on transport in strongly interacting plasmas END:VEVENT END:VCALENDAR