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cond-mat.quant-gas2025
The Infra-Red Road to Quantum Gravity
Samin Tajik, Michael. j. Desrochers, Philip C. E. Stamp
We review work in areas ranging from condensed matter physics to quantum gravity, with the following interconnected questions in mind: (i) what is the nature of the vacuum in conde…
cond-mat.quant-gas2025
Vacuum tunneling of vortices in two-dimensional He superfluid films
Michael J. Desrochers, Dominic Marchand, P. C. E. Stamp
At low temperature T we expect vacuum tunneling processes to occur in superfluid He films. We distinguish between extrinsic processes, in which single vortices nucleate by t…