Speaker
Yegor Korovin
Description
Gravitational theories with higher derivative corrections in AdS are dual to non-unitary QFTs. In particular, these may provide holographic examples of scale but not conformally invariant field theories (SFT). A distinct signature of a SFT is the non-vanishing scale anomaly R^2, which may be computed holographically. We perform a systematic near-boundary analysis of relevant gravitational theories. Generically the R^2 anomaly is not present. However we identify a very special class of theories (e.g. Chern-Simons gravity in 5d) with non-standard near-boundary behaviour. For these theories the R^2 anomaly may be present.
