Breaking time-translation symmetry in nonunitary Gaussian circuits yields a fractal critical phase with tunable logarithmic entanglement growth, while specially designed random circuits keep robust volume-to-area transitions.
Newhouse phenomena in the Fibonacci trace map
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abstract
We study dynamical properties of the Fibonacci trace map - a polynomial map that is related to numerous problems in geometry, algebra, analysis, mathematical physics, and number theory. Persistent homoclinic tangencies, stochastic sea of full Hausdorff dimension, infinitely many elliptic islands - all the conservative Newhouse phenomena are obtained for many values of the Fricke-Vogt invariant. The map has all the essential properties that were obtained previously for the Taylor-Chirikov standard map, and can be suggested as another candidate for the simplest conservative system with highly non-trivial dynamics.
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Entanglement transitions in structured and random nonunitary Gaussian circuits
Breaking time-translation symmetry in nonunitary Gaussian circuits yields a fractal critical phase with tunable logarithmic entanglement growth, while specially designed random circuits keep robust volume-to-area transitions.