3 papers
quant-ph2026
Dynamical irreversibility and local decoherence in quantum many-body chaos
Jose Alfredo de Leon, Miguel Gonzalez, Carlos Diaz-Mejia
Typical dynamical quantum chaos probes are initial-state dependent (e.g., local observables or purities) and thus may fail to capture typical decoherent behavior one expects of a s…
quant-ph2026
Participation Ratio as a Quantum Probe of Hierarchical Stickiness
Ariel A. Galindo Duque, Miguel A. Prado Reynoso, Miguel Gonzalez +1
We investigate how quantum localization encodes the hierarchical stickiness that governs transport in mixed classical phase spaces. Using the periodically driven kicked top, we sho…
quant-ph2025
Phase space geometry of collective spin systems: Scaling and Fractality
Miguel Gonzalez, Miguel A. Bastarrachea-Magnani, Jorge G. Hirsch
We examine the scaling of the inverse participation ratio of spin coherent states in the energy basis of three collective spin systems: a bounded harmonic oscillator, the Lipkin-Me…