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Euclidean thermal correlation functions in local QFT
Peter Lowdon
In this work we outline the general analytic characteristics satisfied by scalar correlation functions at finite temperature in local quantum field theory. We demonstrate that the…
Non-perturbative BRST symmetry and the spectral structure of the ghost propagator
Shirley Weishi Li, Peter Lowdon, Orlando Oliveira +1
In BRST-quantised Yang-Mills theory the existence of BRST symmetry imposes significant constraints on the analytic structure of the continuum theory. In particular, the presence of…
Spectral representation of the shear viscosity for local scalar QFTs at finite temperature
Peter Lowdon, Ralf-Arno Tripolt, Jan M. Pawlowski +1
In local scalar quantum field theories (QFTs) at finite temperature correlation functions are known to satisfy certain non-perturbative constraints, which for two-point functions i…
Analytic constraints on the energy-momentum tensor in conformal field theories
Cédric Lorcé, Peter Lowdon
In this work we investigate the matrix elements of the energy-momentum tensor for massless on-shell states in four-dimensional unitary, local, and Poincaré covariant quantum field…
Gravitational form factor constraints and their universality
Peter Lowdon, Sabrina Cotogno, Cédric Lorcé
By adopting a local QFT framework one can derive in a non-perturbative manner the constraints imposed by Poincaré symmetry on the form factors appearing in the Lorentz covariant de…
Universality of the Poincaré gravitational form factor constraints
Cédric Lorcé, Peter Lowdon
Relativistic spin states are convention dependent. In this work we prove that the zero momentum-transfer limits of the leading two form factors in the decomposition of the energy-m…