3 papers
cond-mat.mes-hall2025
Propagation of Spin Waves in Doubly Periodic Magnonic Crystals
Adam G. Whitney, Joshua M. Lewis, Justin Dickovick +3
Towards the development of strategies for tailoring spin-wave band gaps in magnonic crystals, this work examines the band gap properties in a one-dimensional magnonic crystal with…
quant-ph2025
Lévy Light Cones and Critical Causality in Fractional Multiscale Quantum Ising Models
Joshua M Lewis, Zhexuan Gong, Lincoln D Carr
We study causality and criticality in a one-dimensional fractional multiscale transverse-field Ising model, where fractional derivatives generate long range interactions beyond the…
quant-ph2025
Classical and Quantum Phase Transitions in Multiscale Media: Universality and Critical Exponents in the Fractional Ising Model
Joshua M. Lewis, Lincoln D. Carr
Until now multiscale quantum problems have appeared to be out of reach at the many-body level relevant to strongly correlated materials and current quantum information devices. In…