2 papers
hep-th2026
On divergences in a four-derivative scalar field theory
Maegan Anderson, Sam Bateman, Franz Herzog +1
We perform a detailed diagrammatic analysis of the renormalisation of a family of asymptotically free, shift-symmetric four-derivative scalar field theories introduced by Holdom in…
hep-th2026
Escape from Ostrogradsky via Hidden Ghost Parity
Sam Bateman, Neil Turok
We present a counterexample to Ostrogradsky's famous "no go" theorem as usually interpreted in quantum field theory (QFT), namely a four-derivative, UV-complete QFT with a consiste…