11 citations · 11 across the 7 of their papers we have counts for
7 papers
Might the radiation era extend back to the Big Bang? On dark matter production and the relic graviton background in quadratic gravity
Latham Boyle, Neil Turok, Vatsalya Vaibhav
Naive estimates based on Einstein gravity with Lagrangian suggest that, if the radiation era extended back to the Big Bang (i.e., as far back as the c…
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…
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…
The free boundary problem in general relativity
Kostas Tzanavaris, Latham Boyle, Neil Turok
We study the action principle for space-times whose boundary is singular. We suggest that it is natural to treat the singularity as a {\it free} boundary, where the variation is un…
Fixed points of classical gravity coupled with a Standard-Model-like theory
Latham Boyle, Neil Turok, Vatsalya Vaibhav
Coupling quantum field theory (QFT) \!-\! even free QFT \!-\! to gravity leads to well-known problems. In particular, the stress tensor (gravity's source) and its correlat…
Black Mirrors: CPT-Symmetric Alternatives to Black Holes
Kostas Tzanavaris, Latham Boyle, Neil Turok
Einstein's equations imply that a gravitationally collapsed object forms an event horizon. But what lies on the other side of this horizon? In this paper, we question the reality o…
Visions in Quantum Gravity
Luca Buoninfante, Benjamin Knorr, K. Sravan Kumar +36
To deepen our understanding of Quantum Gravity and its connections with black holes and cosmology, building a common language and exchanging ideas across different approaches is cr…