37 citations · 175 across the 18 of their papers we have counts for
11 papers · 1 filter
OPE = QNM
Paolo Arnaudo, Cristoforo Iossa, Robin Karlsson +1
At microscopic scales the linear response of thermal states of large- CFTs is governed by a thermal operator product expansion (OPE), while at large scales response is governed…
Thermal Stress Tensor Correlators near Lightcone and Holography
Chantelle Esper, Kuo-Wei Huang, Robin Karlsson +2
We consider thermal stress-tensor two-point functions in holographic theories in the near-lightcone regime and analyse them using the operator product expansion (OPE). In the limit…
A thermal product formula
Matthew Dodelson, Cristoforo Iossa, Robin Karlsson +1
We show that holographic thermal two-sided two-point correlators take the form of a product over quasi-normal modes (QNMs). Due to this fact, the two-point function admits a natura…
Freedom near Lightcone and ANEC Saturation
Kuo-Wei Huang, Robin Karlsson, Andrei Parnachev +1
Averaged Null Energy Conditions (ANECs) hold in unitary quantum field theories. In conformal field theories, ANECs in states created by the application of the stress tensor to the…
Thermal Stress Tensor Correlators, OPE and Holography
Robin Karlsson, Andrei Parnachev, Valentina Prilepina +1
In strongly coupled conformal field theories with a large central charge important light degrees of freedom are the stress tensor and its composites, multi-stress tensors. We consi…
CFT correlators, -algebras and Generalized Catalan Numbers
Robin Karlsson, Manuela Kulaxizi, Gim Seng Ng +2
In two spacetime dimensions the Virasoro heavy-heavy-light-light (HHLL) vacuum block in a certain limit is governed by the Catalan numbers. The equation for their generating functi…
Thermalization in Large-N CFTs
Robin Karlsson, Andrei Parnachev, Petar Tadić
In d-dimensional CFTs with a large number of degrees of freedom an important set of operators consists of the stress tensor and its products, multi stress tensors. Thermalization o…
Stress Tensor Sector of Conformal Correlators
Robin Karlsson, Manuela Kulaxizi, Andrei Parnachev +1
An important part of a CFT four-point function, the stress tensor sector, comprises the exchanges of the stress tensor and its composites. The OPE coefficients of these multi-stres…
Multi-stress tensors and next-to-leading singularities in the Regge limit
Robin Karlsson
The stress tensor sector of a heavy-heavy-light-light scalar correlator in CFTs with a large central charge and a large gap is defined by the exchange of multi-stress tensor operat…
Leading Multi-Stress Tensors and Conformal Bootstrap
Robin Karlsson, Manuela Kulaxizi, Andrei Parnachev +1
Near lightcone correlators are dominated by operators with the lowest twist. We consider the contributions of such leading lowest twist multi-stress tensor operators to a heavy-hea…
Black Holes and Conformal Regge Bootstrap
Robin Karlsson, Manuela Kulaxizi, Andrei Parnachev +1
Highly energetic particles traveling in the background of an asymptotically AdS black hole experience a Shapiro time delay and an angle deflection. These quantities are related to…