TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.15.5.190
TI  - Probing chaos in the spherical p-spin glass model
PY  - 2023/11/13
UR  - https://scipost.org/SciPostPhys.15.5.190
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 15
IS  - 5
SP  - 190
A1  - Correale, Lorenzo
AU  - Polkovnikov, Anatoli
AU  - Schirò, Marco
AU  - Silva, Alessandro
AB  - We study the dynamics of a quantum $p$-spin glass model starting from initial states defined in microcanonical shells, in a classical regime. We compute different chaos estimators, such as the Lyapunov exponent and the Kolmogorov-Sinai entropy, and find a marked maximum as a function of the energy of the initial state. By studying the relaxation dynamics and the properties of the energy landscape we show that the maximal chaos emerges in correspondence with the fastest spin relaxation and the maximum complexity, thus suggesting a qualitative picture where chaos emerges as the trajectories are scattered over the exponentially many saddles of the underlying landscape. We also observe hints of ergodicity breaking at low energies, indicated by the correlation function and a maximum of the fidelity susceptibility.
ER  -

@Article{10.21468/SciPostPhys.15.5.190,
	title={{Probing chaos in the spherical p-spin glass model}},
	author={Lorenzo Correale and Anatoli Polkovnikov and Marco Schirò and Alessandro Silva},
	journal={SciPost Phys.},
	volume={15},
	pages={190},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.15.5.190},
	url={https://scipost.org/10.21468/SciPostPhys.15.5.190},
}