activity
20092026
most citedGauge ambiguities imply Jaynes-Cummings physics remains valid in ultrastrong coupling QED

84 citations · 368 across the 24 of their papers we have counts for

collaborators

26 papers

quant-ph2026

Regularised Arbitrary Gauge non-Relativistic QED

Alex Chivers-White, Adam Stokes

We develop a regularised arbitrary-gauge formulation of nonrelativistic quantum electrodynamics and use it to compare Coulomb and multipolar descriptions with a Lorentzian form fac…

cond-mat.mes-hall2026

The role of polarization field terms in a model for a cavity quantum material

Arwen Lloyd, Adam Stokes, Alessandro Principi +1

Constructing models for cavity quantum materials requires a careful treatment of the light-matter coupling. In general, one must specify matrix elements constructed from the materi…

quant-ph2022★ 3 cited

Theory of photon condensation in an arbitrary gauge condensed matter cavity model

Dominic M. Rouse, Adam Stokes, Ahsan Nazir

We derive an arbitrary-gauge criterion under which condensed matter within an electromagnetic field may transition to a photon condensed phase. Previous results are recovered by se…

quant-ph2021★ 5 cited

Non-conjugate quantum subsystems

Adam Stokes

We introduce an alternative way to understand the decomposition of a quantum system into interacting parts and show that it is natural in several physical models. This enables us t…

quant-ph2021

Identification of Poincare-gauge and multipolar nonrelativistic theories of QED

Adam Stokes, Ahsan Nazir

For over six decades, quantum electrodynamics (QED) in multipolar form has been an invaluable tool for understanding quantum-scale atomic and molecular interactions. However, its r…

quant-ph2020★ 60 cited

Implications of gauge freedom for nonrelativistic quantum electrodynamics

Adam Stokes, Ahsan Nazir

Gauge freedom in quantum electrodynamics (QED) outside of textbook regimes is reviewed. It is emphasized that QED subsystems are defined relative to a choice of gauge. Each definit…