Classicality, Markovianity, and local detailed balance from pure-state dynamics

P Strasberg, A Winter, J Gemmer, J Wang - Physical Review A, 2023 - APS
When describing the effective dynamics of an observable in a many-body system, the
repeated randomness assumption, which states that the system returns in a short time to a …

First principles numerical demonstration of emergent decoherent histories

P Strasberg, TE Reinhard, J Schindler - Physical Review X, 2024 - APS
Within the histories formalism the decoherence functional is a formal tool to investigate the
emergence of classicality in isolated quantum systems, yet an explicit evaluation of it from …

Operational metric for quantum chaos and the corresponding spatiotemporal-entanglement structure

N Dowling, K Modi - PRX Quantum, 2024 - APS
Chaotic systems are highly sensitive to a small perturbation and are ubiquitous throughout
the biological sciences, the physical sciences, and even the social sciences. Taking this as …

Classicality with (out) decoherence: Concepts, relation to Markovianity, and a random matrix theory approach

P Strasberg - SciPost Physics, 2023 - scipost.org
Answers to the question how a classical world emerges from underlying quantum physics
are revisited, connected and extended as follows. First, three distinct concepts are …

Capturing long-range memory structures with tree-geometry process tensors

N Dowling, K Modi, RN Muñoz, S Singh, GAL White - Physical Review X, 2024 - APS
We introduce a class of quantum non-Markovian processes—dubbed process trees—that
exhibit polynomially decaying temporal correlations and memory distributed across …

Shearing Off the Tree: Emerging Branch Structure and Born's Rule in an Equilibrated Multiverse

P Strasberg, J Schindler - arxiv preprint arxiv:2310.06755, 2023 - arxiv.org
Within the many worlds interpretation (MWI) it is believed that, as time passes on, the
linearity of the Schr\" odinger equation together with decoherence generate an exponentially …

Temporal fluctuations of correlators in integrable and chaotic quantum systems

T LM Lezama, Y Bar Lev, LF Santos - SciPost Physics, 2023 - scipost.org
We provide bounds on temporal fluctuations around the infinite-time average of out-of-time-
ordered and time-ordered correlators of many-body quantum systems without energy gap …

A First Principles Numerical Demonstration of Emergent Decoherent Histories

P Strasberg, TE Reinhard, J Schindler - arxiv preprint arxiv:2304.10258, 2023 - arxiv.org
Within the histories formalism the decoherence functional is a formal tool to investigate the
emergence of classicality in isolated quantum systems, yet an explicit evaluation of it from …

Diagnosing chaos with projected ensembles of process tensors

P O'Donovan, N Dowling, K Modi… - arxiv preprint arxiv …, 2025 - arxiv.org
The process tensor provides a general representation of a quantum system evolving under
repeated interventions and is fundamental for numerical simulations of local many-body …

Quantum processes as thermodynamic resources: the role of non-Markovianity

G Zambon, G Adesso - arxiv preprint arxiv:2411.05559, 2024 - arxiv.org
Quantum thermodynamics studies how quantum systems and operations may be exploited
as sources of work to perform useful thermodynamic tasks. In real-world conditions, the …