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20122026
most citedQuantum Mereology: Factorizing Hilbert Space into Subsystems with Quasi-Classical Dynamics

64 citations · 198 across the 19 of their papers we have counts for

collaborators

20 papers

physics.class-ph2026

Restoring Invariance to the Mechanical Wave Equation across Inertial Frames

Ashmeet Singh, Heather Romero Michel

The mechanical wave equation, derived from Newton's laws, takes its simplest form in the rest frame of the medium, and appears to lose that form entirely once expressed in the coor…

quant-ph2026

Wave packets from the spectrum

ChunJun Cao, Oliver Friedrich, Marin Girard +2

The freedom to change Fock basis seems to ensure a minimum amount of locality in lattice theories in the following sense: If for $i…

hep-th2024★ 2 cited

Holographic phenomenology via overlapping degrees of freedom

Oliver Friedrich, ChunJun Cao, Sean M. Carroll +2

The holographic principle suggests that regions of space contain fewer physical degrees of freedom than would be implied by conventional quantum field theory. Meanwhile, in Hilbert…

gr-qc2023★ 2 cited

Emergence of Gravitational Potential and Time Dilation from Non-interacting Systems Coupled to a Global Quantum Clock

Ashmeet Singh, Oliver Friedrich

We study gravitational back-reaction within the Page-Wootters formulation of quantum mechanics by treating time as a quantum degree of freedom. Our model introduces a distinction b…

gr-qc2022★ 3 cited

Toolkit for Scalar Fields in Universes with finite-dimensional Hilbert Space

Oliver Friedrich, Ashmeet Singh, Olivier Doré

The holographic principle suggests that the Hilbert space of quantum gravity is locally finite-dimensional. Motivated by this point-of-view, and its application to the observable U…

quant-ph2021

Probing the Quantum Nature of Gravity in the Microgravity of Space

Ashmeet Singh

Conventionally, experiments probing the quantum nature of gravity were thought to be prohibitive due to the extremely high energy scales involved. However, recent and rapid advance…