Unitarity in Higher-Derivative Quantum Gravity

Details Unitarity in Higher-Derivative Quantum Gravity Unitarity in Higher-Derivative Quantum Gravity

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phrvl..52.1173t&link_type=abstract

Physical Review Letters, Volume 52, Issue 14, April 2, 1984, pp.1173-1176

Physics

58

Renormalization

Scientific paper

A Euclidean lattice formulation is presented of the general fourth-order gravitational action involving R2μν terms. This lattice theory is bounded and reflection positive. The existence of a positive Hilbert space and Hamiltonian, and hence unitarity, follow then from the standard nonperturbative Osterwalder-Schrader construction.

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