4 papers · 1 filter
Sp(4,Z) actions on 3d U(1)^2 symmetric theories: Order-five duality and bilayer quantum Hall hierarchies
Yasin F. Alam, Andreas Karch, Da-Chuan Lu +1
The electromagnetic duality of 4d Maxwell theory induces theory-generating operations on 3d theories with global symmetry. For theories with $U(1…
One-point functions in 2D and 4D SUSY Janus
Andreas Karch, Ainesh Sanyal, Ryan C. Spieler +1
We calculate one-point functions of the marginal operators dual to the space-varying dilaton in 4D and 2D holographic Janus interfaces, extending the results of \cite{Clark_2005}.…
Wet Hair: Global Symmetries in Entanglement Islands
Hao Geng, Jesús Huertas, Andreas Karch +2
A central conjecture in quantum gravity is the non-existence of global symmetries. As a fully unitary theory, there is no information loss in a UV complete quantum gravity theory.…
Universality of Dissipation across Holographic Interfaces
Andreas Karch, Mianqi Wang
Motivated by recent results in spin chains we study dissipation and relaxation in a two-dimensional \ak{holographic} interface conformal field theory (ICFT) in which degrees of fre…