Minimal massive 3D gravity unitarity redux
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Abstract
A geometrical analysis of the bulk and anti-de Sitter boundary unitarity conditions of 3D ‘minimal massive gravity’ (MMG) (which evades the ‘bulk/boundary clash’ of topologically massive gravity) is used to extend and simplify previous results, showing that unitarity selects, up to equivalence, a connected region in parameter space. We also initiate the study of flat-space holography for MMG. Its relevant flat space limit is a deformation of 3D conformal gravity; the deformation is both nonlinear and non-conformal, implying a linearization instability.
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Journal Title
Classical and Quantum Gravity
Conference Name
Journal ISSN
0264-9381
1361-6382
1361-6382
Volume Title
32
Publisher
IOP Publishing
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Except where otherwised noted, this item's license is described as Attribution 2.0 UK: England & Wales
Sponsorship
Science and Technology Facilities Council (ST/J000434/1)
Science and Technology Facilities Council (ST/L000385/1)
Science and Technology Facilities Council (ST/L000636/1)
Science and Technology Facilities Council (ST/L000385/1)
Science and Technology Facilities Council (ST/L000636/1)
A.S.A. and P.K.T. acknowledge support from the UK Science and Technology Facilities
Council (grant ST/L000385/1). A.S.A. also acknowledges support from Clare Hall
College, Cambridge, and from the Cambridge Trust. We are grateful to Eduardo Casali,
Elias Kiritsis and Alasdair Routh for helpful discussions, and to Eric Bergshoeff and
Wout Merbis for helpful correspondence.