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Six Particles, Infinite Optimism: Towards Positivity Bounds for Six-Point Amplitudes
Stefan Kremminger, Andrew J. Tolley
The systematic generalisation of the well-established -matrix positivity and bootstrap bounds from scattering processes to higher-point amplitudes has, to date, remain…
Unitary Dual-Resonance S-matrices
Claudia de Rham, Andrew J. Tolley, Zhuo-Hui Wang +1
Dual-resonance models realize crossing symmetry, Regge behavior and infinitely many resonances in a compact analytic form but their canonical tree-level realizations fall short of…
Diffeomorphic Scalar Duality
Claudia de Rham, Andrew J. Tolley
We show that every local scalar effective field theory admits a new kind of duality to an infinite class of local scalar field theories with distinct Lagrangians. The duality map t…
Schwinger-Keldysh Path Integral for Gauge theories
Greg Kaplanek, Maria Mylova, Andrew J. Tolley
We develop the Schwinger-Keldysh path-integral formalism for open non-Abelian gauge theories that are gauge-fixed via the BRST method in covariant gauges. We focus on generic initi…
Graviton propagation in ghost-free massive gravity
Claudia de Rham, Jan Kożuszek, Andrew J. Tolley +1
We consider the ghost-free dRGT massive gravity with two of its three possible mass terms. This theory has five gravitational degrees of freedom. On Minkowski spacetime these modes…