A universal Schwarzian sector in two-dimensional conformal field theories

A Ghosh, H Maxfield, GJ Turiaci - Journal of High Energy Physics, 2020 - Springer
A bstract We show that an extremely generic class of two-dimensional conformal field
theories (CFTs) contains a sector described by the Schwarzian theory. This applies to …

From CFTs to theories with Bondi-Metzner-Sachs symmetries: Complexity and out-of-time-ordered correlators

A Banerjee, A Bhattacharyya, P Drashni, S Pawar - Physical Review D, 2022 - APS
We probe the contraction from 2 d relativistic CFTs to theories with Bondi-Metzner-Sachs
(BMS) symmetries, or equivalently conformal Carroll symmetries, using diagnostics of …

The multi-faceted inverted harmonic oscillator: Chaos and complexity

A Bhattacharyya, W Chemissany, SS Haque… - SciPost Physics …, 2021 - scipost.org
The harmonic oscillator is the paragon of physical models; conceptually and computationally
simple, yet rich enough to teach us about physics on scales that span classical mechanics to …

Circuit complexity from cosmological islands

S Choudhury, S Chowdhury, N Gupta, A Mishara… - Symmetry, 2021 - mdpi.com
Recently, in various theoretical works, path-breaking progress has been made in recovering
the well-known page curve of an evaporating black hole with quantum extremal islands …

On the connection between hydrodynamics and quantum chaos in holographic theories with stringy corrections

S Grozdanov - Journal of High Energy Physics, 2019 - Springer
A bstract Pole-skipping is a recently discovered signature of many-body quantum chaos in
collective energy dynamics. It establishes a precise connection between resummed, all …

A model of randomly-coupled Pauli spins

M Hanada, A Jevicki, X Liu, E Rinaldi… - Journal of High Energy …, 2024 - Springer
A bstract We construct a model of Pauli spin operators with all-to-all 4-local interactions by
replacing Majorana fermions in the SYK model with spin operators. Equivalently, we replace …

Many-body quantum chaos and dual-unitarity round-a-face

T Prosen - Chaos: An Interdisciplinary Journal of Nonlinear …, 2021 - pubs.aip.org
We propose a new type of locally interacting quantum circuits—quantum cellular automata—
that are generated by unitary interactions round-a-face (IRF). Specifically, we discuss a set …

Complexity from the reduced density matrix: a new diagnostic for chaos

A Bhattacharyya, SS Haque, EH Kim - Journal of High Energy Physics, 2021 - Springer
A bstract We investigate circuit complexity to characterize chaos in multiparticle quantum
systems. In the process, we take a stride to analyze open quantum systems by using …

Quantum aspects of chaos and complexity from bouncing cosmology: A study with two-mode single field squeezed state formalism

P Bhargava, S Choudhury, S Chowdhury… - SciPost Physics …, 2021 - scipost.org
Abstract $ Circuit~ Complexity $, a well known computational technique has recently
become the backbone of the physics community to probe the chaotic behaviour and random …

Out-of-Time-Order correlators in driven conformal field theories

S Das, B Ezhuthachan, A Kundu, S Porey… - Journal of High Energy …, 2022 - Springer
A bstract We compute Out-of-Time-Order correlators (OTOCs) for conformal field theories
(CFTs) subjected to either continuous or discrete periodic drive protocols. This is achieved …