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Wojciech De Roeck
Researcher at Katholieke Universiteit Leuven
Publications - 94
Citations - 3790
Wojciech De Roeck is an academic researcher from Katholieke Universiteit Leuven. The author has contributed to research in topics: Hamiltonian (quantum mechanics) & Quantum. The author has an hindex of 28, co-authored 92 publications receiving 3037 citations. Previous affiliations of Wojciech De Roeck include ETH Zurich & Harvard University.
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Exponentially Slow Heating in Periodically Driven Many-Body Systems.
TL;DR: It is shown that, for systems with local interactions, the energy absorption rate decays exponentially as a function of driving frequency in any number of spatial dimensions, implying that topological many-body states in periodically driven systems, although generally metastable, can have very long lifetimes.
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Stability and instability towards delocalization in many-body localization systems
TL;DR: In this article, the stability of a many-body localized material in contact with an ergodic grain was investigated and it was shown that the ergodics are always present as Griffiths regions where disorder is anomalously small, and hence, the authors conclude that the localized phase in such materials is unstable, strictly speaking.
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Effective Hamiltonians, prethermalization, and slow energy absorption in periodically driven many-body systems
TL;DR: In this paper, it was shown that a quantum many-body system with a high-frequency periodic driving has a quasiconserved extensive quantity, which plays the role of an effective static Hamiltonian, and that the energy absorption rate is exponentially small in the driving frequency.
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A Rigorous Theory of Many-Body Prethermalization for Periodically Driven and Closed Quantum Systems
TL;DR: In this paper, the authors considered the Fermi-Hubbard model with periodic driving at high frequency and showed that up to a quasi-exponential time, the system barely absorbs energy.
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Theory of many-body localization in periodically driven systems
TL;DR: In this article, a theory of periodically driven, many-body localized (MBL) systems is presented, where the Floquet operator (evolution operator over one driving period) can be represented as an exponential of an effective time-independent Hamiltonian, which is a sum of quasi-local terms and is itself fully MBL.