150 citations · 1.6k across the 43 of their papers we have counts for
43 papers
The two-dimensional disordered sigma model
Martí Berenguer, Felix M. Haehl, Elisa Tabor
We introduce a two-dimensional nonlinear sigma model with random Gaussian -body interactions. The model combines the structure of a two-dimensional bosonic SYK-type quant…
Holographic Black Hole Formation and Scrambling in Time-Ordered Correlators
Pratyusha Chowdhury, Felix M. Haehl, Adrián Sánchez-Garrido +1
We describe a holographic mechanism for black hole formation via the collision of two shock waves in three-dimensional anti-de Sitter spacetime. In the dual conformal field theory…
Mind the crosscap: -scaling in non-orientable gravity and time-reversal-invariant systems
Gabriele Di Ubaldo, Altay Etkin, Felix M. Haehl +1
Spectral statistics of quantum chaotic systems are governed by random matrix universality. In many cases of interest, time-reversal symmetry selects the Gaussian Orthogonal Ensembl…
Virasoro OPE Blocks, Causal Diamonds, and Higher-Dimensional CFT
Felix M. Haehl, Kuo-Wei Huang
In two-dimensional Conformal Field Theory (CFT), multi-stress tensor exchanges between probe operators give rise to the Virasoro identity conformal block, which is fixed by symmetr…
Modular-invariant random matrix theory and AdS wormholes
Jan Boruch, Gabriele Di Ubaldo, Felix M. Haehl +2
We develop a non-perturbative definition of RMT: a generalization of random matrix theory that is compatible with the symmetries of two-dimensional conformal field theory. Gi…
Records from the S-Matrix Marathon: Schwinger-Keldysh Formalism
Felix M. Haehl, Mukund Rangamani
These notes provide an overview of real-time techniques in quantum field theories and holography. We outline the general rationale and principles underlying the Schwinger-Keldysh f…
Euclidean wormholes in two-dimensional CFTs from quantum chaos and number theory
Felix M. Haehl, Wyatt Reeves, Moshe Rozali
We consider two-dimensional conformal field theories (CFTs), which exhibit a hallmark feature of quantum chaos: universal repulsion of energy levels as described by a regime of lin…
Symmetries and spectral statistics in chaotic conformal field theories II: Maass cusp forms and arithmetic chaos
Felix M. Haehl, Wyatt Reeves, Moshe Rozali
We continue the study of random matrix universality in two-dimensional conformal field theories. This is facilitated by expanding the spectral form factor in a basis of modular inv…
Operator growth and black hole formation
Felix M. Haehl, Ying Zhao
When two particles collide in an asymptotically AdS spacetime with high enough energy and small enough impact parameter, they can form a black hole. Motivated by dual quantum circu…
Effective description of sub-maximal chaos: stringy effects for SYK scrambling
Changha Choi, Felix M. Haehl, Márk Mezei +1
It has been proposed that the exponential decay and subsequent power law saturation of out-of-time-order correlation functions can be universally described by collective 'scramblon…
Symmetries and spectral statistics in chaotic conformal field theories
Felix M. Haehl, Charles Marteau, Wyatt Reeves +1
We discuss spectral correlations in coarse-grained chaotic two-dimensional CFTs with large central charge. We study a partition function describing the dense part of the spectrum o…
Collisions of localized shocks and quantum circuits
Felix M. Haehl, Ying Zhao
We study collisions between localized shockwaves inside a black hole interior. We give a holographic boundary description of this process in terms of the overlap of two growing per…
Spin liquid to spin glass crossover in the random quantum Heisenberg magnet
Maine Christos, Felix M. Haehl, Subir Sachdev
We study quantum SU() spins with all-to-all and random Heisenberg exchange interactions of root-mean-square strength . The model has a spin liquid grou…
The quantum -spin glass model: A user manual for holographers
Tarek Anous, Felix M. Haehl
We study a large- bosonic quantum mechanical sigma-model with a spherical target space subject to disordered interactions, more colloquially known as the -spin spherical mode…
Six-point functions and collisions in the black hole interior
Felix M. Haehl, Alexandre Streicher, Ying Zhao
In the eternal AdS black hole geometry, we consider two signals sent from the boundaries into the black hole interior shared between the two asymptotic regions. We compute three di…
Diagnosing collisions in the interior of a wormhole
Felix M. Haehl, Ying Zhao
Two distant black holes can be connected in the interior through a wormhole. Such a wormhole has been interpreted as an entangled state shared between two exterior regions. If Alic…
Size and momentum of an infalling particle in the black hole interior
Felix M. Haehl, Ying Zhao
The future interior of black holes in AdS/CFT can be described in terms of a quantum circuit. We investigate boundary quantities detecting properties of this quantum circuit. We di…
On the Virasoro six-point identity block and chaos
Tarek Anous, Felix M. Haehl
We study six-point correlation functions in two dimensional conformal field theory, where the six operators are grouped in pairs with equal conformal dimension. Assuming large cent…
Reparametrization modes, shadow operators, and quantum chaos in higher-dimensional CFTs
Felix M. Haehl, Wyatt Reeves, Moshe Rozali
We study two novel approaches to efficiently encoding universal constraints imposed by conformal symmetry, and describe applications to quantum chaos in higher dimensional CFTs. Th…
Nonlocal multi-trace sources and bulk entanglement in holographic conformal field theories
Felix M. Haehl, Eric Mintun, Jason Pollack +2
We consider CFT states defined by adding nonlocal multi-trace sources to the Euclidean path integral defining the vacuum state. For holographic theories, we argue that these states…
Effective Field Theory for Chaotic CFTs
Felix M. Haehl, Moshe Rozali
We derive an effective field theory for general chaotic two-dimensional conformal field theories with a large central charge. The theory is a specific and calculable instance of a…
An Inflow Mechanism for Hydrodynamic Entropy
Felix M. Haehl, R. Loganayagam, Mukund Rangamani
We argue that entropy production in hydrodynamics can be understood via a superspace inflow mechanism. Our arguments are based on a recently developed formalism for constructing ef…
Effective Action for Relativistic Hydrodynamics: Fluctuations, Dissipation, and Entropy Inflow
Felix M. Haehl, R. Loganayagam, Mukund Rangamani
We present a detailed and self-contained analysis of the universal Schwinger-Keldysh effective field theory which describes macroscopic thermal fluctuations of a relativistic field…
Fine-Grained Chaos in Gravity
Felix M. Haehl, Moshe Rozali
Quantum chaos can be characterized by an exponential growth of the thermal out-of-time-order four-point function up to a scrambling time . We discuss generalizations…