2 papers
quant-ph2026
Transition-state lattice modes and the breakdown of adiabatic tunneling for hydrogen and deuterium in bcc Nb
P. Graham Pritchard, James M. Rondinelli
Interstitial hydrogen and deuterium in body-centered-cubic metals constitute archetypal quantum tunneling systems. Their relevance has been renewed by the connection between hydrog…
quant-ph2026
Lattice-Renormalized Tunneling Models for Superconducting Qubit Materials
P. G. Pritchard, James M. Rondinelli
We present a lattice-renormalized formalism for configurational tunneling two-level systems (TLS) that overcomes limitations of minimum-energy-path and light-particle models. Deriv…