Date : June 21, 2022, 16:00 CEST Giuseppe Policastro (École Normale) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 A semi-holographic model of non-Fermi liquids Abstract: In recent years, the holographic correspondence has been used in many contexts to explore properties of strongly coupled systems that are hard to explain by conventional methods. One instance of such systems is given by the […]

Date : June 7, 2022, 16:00 CEST David Lowe (Brown University) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Quantum Chaos and Unitary Black Hole Evaporation Abstract: The formation and evaporation of small AdS black holes in a theory with a holographic dual is governed by the usual rules of quantum mechanics. The eigenstate thermalization hypothesis explains the validity of semiclassical gravity […]

Date : May 31, 2022, 16:00 CEST Amos Yarom (Technion) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Hydrodynamics, spin currents and torsion Abstract: I will explain how to construct the canonical constitutive relations for a fluid description of a system with a spin current, valid in an arbitrary number of dimensions in the absence of parity breaking or time reversal […]

Date : June 28, 2022, 16:00 CEST Jörg Schmalian (Karlsruhe Institute of Technology) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Superconductivity without quasiparticles: Quantum critical Eliashberg theory and its holographic dual Abstract: Superconductivity is abundant near quantum-critical points, where fluctuations suppress the formation of Fermi liquid quasiparticles and the Bardeen-Cooper-Schrieffer theory no longer applies. Two very distinct approaches have been […]

Date : May 10, 2022, 16:00 CEST Andrei Parnachev (Trinity College Dublin) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Heavy and thermal states in CFT and holography Abstract: I will talk about heavy states in CFTs in d>2. Implications for holography, thermal physics and possible higher spin symmetries relevant for near lightcone correlators will be discussed.

Date : May 17, 2022, 16:00 CEST Robert Myers (Perimeter Institute) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Complexity = Anything2 Abstract: Motivated by holographic complexity, we examine a new class of gravitational observables in asymptotically AdS space associated with codimension-one slices or with codimension-zero regions. We argue that any of these observables is an equally viable candidate as the […]

Date : May 3, 2022, 16:00 CEST Daniel Grumiller (Vienna University of Technology) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Flat space holography in lower dimensions Abstract: I review progress on flat space holography in three and two bulk dimensions, focusing on the relation to the complex SYK model and a “twisted warped” geometric action analogous to the Schwarzian.

Date : March 29, 2022, 16:00 CEST Hong Liu (MIT) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Emergent times in holography Abstract: In holographic duality an eternal AdS black hole is described by two copies of the boundary CFT in the thermal field double state. We provide explicit constructions in the boundary theory of Kruskal-like time evolutions which can take […]

Date : March 22, 2022, 16:00 CET Derek Teaney (Stony Brook University) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Soft pions, hydrodynamics, and the chiral critical point Abstract:  I will first discuss chiral symmetry breaking and the evidence for the O(4) critical point from lattice QCD.  With this motivation, I will then describe the appropriate hydrodynamic theory well below the […]

Date : March 15, 2022, 16:00 CET Carlos Hoyos (University of Oviedo) Link: https://zoom.us/j/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Title: Space-dependent symmetries and fractons Abstract:  Fractons are excitations with unusual properties like restricted mobility in some or all spatial directions. Their presence is linked to symmetry transformations depending on the spatial coordinates, like dipole or subsystem symmetries, which sometimes are emergent […]