5 papers
A Quantum Computational Perspective on Spread Complexity
Cameron Beetar, Eric L Graef, Jeff Murugan +2
We establish a direct connection between spread complexity and quantum circuit complexity by demonstrating that spread complexity emerges as a limiting case of a circuit complexity…
Krylov complexity, path integrals, and instantons
Cameron Beetar, Eric L Graef, Jeff Murugan +2
Krylov complexity has emerged as an important tool in the description of quantum information and, in particular, quantum chaos. Here we formulate Krylov complexity for quant…
More on OTOCs and Chaos in Quantum Mechanics -- Magnetic Fields
Cameron Beetar, Jeff Murugan
We revisit thermal out-of-time-order correlators (OTOCs) in single-particle quantum systems, focusing on magnetic billiards. Using the stadium billiard as a testbed, we compute the…
(A)Symmetric Complexity and the Quantum Mpemba Effect
Cameron Beetar, Jeff Murugan, Hendrik J. R. van Zyl
The Quantum Mpemba Effect (QME) -- the counter-intuitive phenomenon where states further from equilibrium can relax faster than those closer to it -- challenges standard expectatio…
Double Copy in AdS3 from Minitwistor Space
Cameron Beetar, Mariana Carrillo González, Sumer Jaitly +1
The double copy relates gravitational theories to the square of gauge theories. While it is well understood in flat backgrounds, its precise realisation around curved spacetimes re…