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Post-measurement Quantum Monte Carlo
Kriti Baweja, David J. Luitz, Samuel J. Garratt
We show how the effects of large numbers of measurements on many-body quantum ground and thermal states can be studied using Quantum Monte Carlo (QMC). Density matrices generated b…
Quantum many-body Jarzynski equality and dissipative noise on a digital quantum computer
Dominik Hahn, Maxime Dupont, Markus Schmitt +2
The quantum Jarzynski equality and the Crooks relation are fundamental laws connecting equilibrium processes with nonequilibrium fluctuations. They are promising tools to benchmark…
Information Dynamics in a Model with Hilbert Space Fragmentation
Dominik Hahn, Paul A. McClarty, David J. Luitz
The fully frustrated ladder - a quasi-1D geometrically frustrated spin one half Heisenberg model - is non-integrable with local conserved quantities on rungs of the ladder, inducin…
Operator entanglement entropy of the time evolution operator in chaotic systems
Tianci Zhou, David J. Luitz
We study the growth of the operator entanglement entropy (EE) of the time evolution operator in chaotic, many-body localized and Floquet systems. In the random field Heisenberg mod…
Anomalous thermalization in ergodic systems
David J. Luitz, Yevgeny Bar Lev
It is commonly believed that quantum isolated systems satisfying the eigenstate thermalization hypothesis (ETH) are diffusive. We show that this assumption is too restrictive, sinc…
Universal behavior beyond multifractality in quantum many-body systems
David J. Luitz, Fabien Alet, Nicolas Laflorencie
How many states of a configuration space contribute to a wave-function? Attempts to answer this ubiquitous question have a long history in physics and chemistry, and are keys to un…