2 papers
quant-ph2026
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…
hep-th2026
Area Scaling of Dynamical Degrees of Freedom in Regularised Scalar Field Theory
Oliver Friedrich, Kristina Giesel, Varun Kushwaha
How many canonical degrees of freedom does a quantum field theory actually use during its Hamiltonian evolution? For a UV/IR-regularised classical scalar field, we address this que…