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gr-qc2024

Structure and statistical properties of the semiclassical Einstein equations

Daniel R. Terno

We treat the semiclassical Einstein equation as a quantum-classical hybrid and demonstrate the formal equivalence of its two derivation methods. This approach identifies the left-h…

gr-qc2024

Semi-classical imprints on quasinormal mode spectra

Fil Simovic, Daniel R. Terno

We compute quasinormal mode frequencies for static limits of physical black holes - semi-classical black hole solutions to Einstein-Hilbert gravity characterized by the finite form…

gr-qc2024

Paradoxes before the paradox: surface gravity and the information loss problem

Robert B. Mann, Sebastian Murk, Daniel R. Terno

The information loss paradox is widely regarded as one of the biggest open problems in theoretical physics. Several classical and quantum features must be present to enable its for…

quant-ph2024

Unification of energy concepts in generalised phase space theories

Libo Jiang, Daniel R. Terno, Oscar Dahlsten

We consider how to describe Hamiltonian mechanics in generalised probabilistic theories with the states represented as quasi-probability distributions. We give general operational…

quant-ph2024

From reasonable postulates to generalised Hamiltonian systems

Libo Jiang, Daniel R. Terno, Oscar Dahlsten

Hamiltonian mechanics describes the evolution of a system through its Hamiltonian. The Hamiltonian typically also represents the energy observable, a Noether-conserved quantity ass…

quant-ph2024

Classical-Quantum Hybrid Models

Daniel R. Terno

Hybrid classical-quantum models are computational schemes that investigate the time evolution of systems, where some degrees of freedom are treated classically, while others are de…