31 citations · 58 across the 7 of their papers we have counts for
7 papers
The relation between classical and quantum Lyapunov exponent and the bound on chaos in classically chaotic quantum systems
Fabian Haneder, Gerrit Caspari, Juan Diego Urbina +1
Out-of-Time-Ordered Commutators (OTOCs), representing a key diagnostic for scrambling as a facet of short-time quantum chaos, have attracted wide-ranging interest, from many-body p…
Beyond the ensemble paradigm in low dimensional quantum gravity: Schwarzian density, quantum chaos and wormhole contributions
Fabian Haneder, Juan Diego Urbina, Camilo Moreno +2
Based on periodic orbit theory we address the individual-system versus ensemble interpretation of quantum gravity from a quantum chaos perspective. To this end we show that the spe…
Unorientable topological gravity and orthogonal random matrix universality
Torsten Weber, Jarod Tall, Fabian Haneder +2
The duality of Jackiw-Teitelboim (JT) gravity and a double scaled matrix integral has led to studies of the canonical spectral form factor (SFF) in the so called scaled limit o…
Constraining Weil-Petersson volumes by universal random matrix correlations in low-dimensional quantum gravity
Torsten Weber, Fabian Haneder, Klaus Richter +1
Based on the discovery of the duality between Jackiw-Teitelboim quantum gravity and a double-scaled matrix ensemble by Saad, Shenker and Stanford in 2019, we show how consistency b…
Path integral renormalisation in loop quantum cosmology
Norbert Bodendorfer, Muxin Han, Fabian Haneder +1
A coarse graining technique akin to block spin transformations that groups together fiducial cells in a homogeneous and isotropic universe has been recently developed in the contex…
A note on coarse graining and group representations
Norbert Bodendorfer, Fabian Haneder
A coarse graining operation of spatially homogeneous quantum states based on an SU(1,1) Lie group structure has recently been proposed in [1] and used in [2] to compute an explicit…
Coarse graining as a representation change
Norbert Bodendorfer, Fabian Haneder
We discuss how SU coherent states from the discrete series allow for a natural coarse graining operation. The physical application are quantum theories based on a set of thr…