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of 38
pro vyhledávání: '"von Keyserlingk, Curt"'
In thermalizing many-body quantum systems without conservation laws such as ergodic Floquet and random unitary circuits, local expectation values are predicted to decay to their equilibrium values exponentially quickly. In this work we derive a relat
Externí odkaz:
http://arxiv.org/abs/2409.17251
Using artificial dissipation to tame entanglement growth, we chart the emergence of diffusion in a generic interacting lattice model for varying U(1) charge densities. We follow the crossover from ballistic to diffusive transport above a scale set by
Externí odkaz:
http://arxiv.org/abs/2408.08249
We study entanglement growth in a harmonic oscillator chain subjected to the weak measurement of observables which have been smeared-out over a length scale $R$. We find that entanglement grows diffusively ($S \sim t^{1/2}$) for a large class of init
Externí odkaz:
http://arxiv.org/abs/2403.04022
Publikováno v:
Phys. Rev. Research 6, 033226 (2024)
Having spectral correlations that, over small enough energy scales, are described by random matrix theory is regarded as the most general defining feature of quantum chaotic systems as it applies in the many-body setting and away from any semiclassic
Externí odkaz:
http://arxiv.org/abs/2402.19096
Charge and energy are expected to diffuse in interacting systems of fermions at finite temperatures, even in the absence of disorder, with the interactions inducing a crossover from the coherent and ballistic streaming of quasi-particles at early tim
Externí odkaz:
http://arxiv.org/abs/2310.16043
Autor:
Srivatsa, N. S., von Keyserlingk, Curt
Publikováno v:
Phys. Rev. B 109, 125149 (2024)
The operator growth hypothesis (OGH) is a technical conjecture about the behaviour of operators -- specifically, the asymptotic growth of their Lanczos coefficients -- under repeated action by a Liouvillian. It is expected to hold for a sufficiently
Externí odkaz:
http://arxiv.org/abs/2310.15376
The steady states of dynamical processes can exhibit stable nontrivial phases, which can also serve as fault-tolerant classical or quantum memories. For Markovian quantum (classical) dynamics, these steady states are extremal eigenvectors of the non-
Externí odkaz:
http://arxiv.org/abs/2308.15495
Publikováno v:
Phys. Rev. Lett. 121, 086808 (2018)
Entanglement properties are routinely used to characterize phases of quantum matter in theoretical computations. For example the spectrum of the reduced density matrix, or so-called "entanglement spectrum", has become a widely used diagnostic for uni
Externí odkaz:
http://arxiv.org/abs/1804.09725
Publikováno v:
Phys. Rev. X 8, 021013 (2018)
Thermalization and scrambling are the subject of much recent study from the perspective of many-body quantum systems with locally bounded Hilbert spaces (`spin chains'), quantum field theory and holography. We tackle this problem in 1D spin-chains ev
Externí odkaz:
http://arxiv.org/abs/1705.08910
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