680 citations · 3.3k across the 37 of their papers we have counts for
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Signature-change events in emergent spacetimes with anisotropic scaling
Silke Weinfurtner, Angela White, Matt Visser
We investigate the behaviour of quantum fields coupled to a spacetime geometry exhibiting finite regions of Euclidean (Riemannian) signature. Although from a gravity perspective th…
Phenomenologically viable Lorentz-violating quantum gravity
Thomas P. Sotiriou, Matt Visser, Silke Weinfurtner
Horava's "Lifschitz point gravity" has many desirable features, but in its original incarnation one is forced to accept a non-zero cosmological constant of the wrong sign to be com…
Birkhoff-like theorem for rotating stars in (2+1) dimensions
Jozef Skakala, Matt Visser
Consider a rotating and possibly pulsating "star" in (2+1) dimensions. If the star is axially symmetric, then in the vacuum region surrounding the star, (a region that we assume at…
Lorentz symmetry breaking as a quantum field theory regulator
Matt Visser
Perturbative expansions of relativistic quantum field theories typically contain ultraviolet divergences requiring regularization and renormalization. Many different regularization…