4 papers · 1 filter
Causality from the spectrum: Emergence of causal order from process-matrix mereology
Varun Kushwaha, Nicolas Loizeau, Alexei Grinbaum +1
In Hamiltonian systems, the only basis-independent quantity is the spectrum. Given a spectrum, quantum mereology seeks preferred tensor-product decompositions into local subsystems…
Opening Krylov space to access all-time dynamics via dynamical symmetries
Nicolas Loizeau, Berislav BuÄa, Dries Sels
Solving short and long time dynamics of closed quantum many-body systems is one of the main challenges of both atomic and condensed matter physics. For locally interacting closed s…
Quantum mereology and subsystems from the spectrum
Nicolas Loizeau, Dries Sels
The minimal ingredients to describe a quantum system are a Hamiltonian, an initial state, and a preferred tensor product structure that encodes a decomposition into subsystems. We…
Quantum many-body simulations with PauliStrings.jl
Nicolas Loizeau, J. Clayton Peacock, Dries Sels
We present the Julia package PauliStrings ( https://github.com/nicolasloizeau/PauliStrings.jl ) for quantum many-body simulations, which performs fast operations on the Pauli group…