1.8k citations · 3k across the 17 of their papers we have counts for
18 papers
Mixed signals in the IR: Positivity bounds with indefinite species
Claudia de Rham, Sumer Jaitly, Greg Kaplanek
In theories with multiple particle species standard fixed-t positivity bounds do not directly apply to 2-to-2 definite species scattering amplitudes when the initial and final stat…
A cautionary case of casual causality
Calvin Y. -R. Chen, Claudia de Rham, Aoibheann Margalit +1
We distinguish between the notions of asymptotic causality and infrared causality for gravitational effective field theories, and show that the latter gives constraints consistent…
QED positivity bounds
Lasma Alberte, Claudia de Rham, Sumer Jaitly +1
We apply positivity bounds directly to a gauge theory with charged scalars and charged fermions, i.e. QED, minimally coupled to gravity. Assuming that the massless -chann…
Positivity Bounds and the Massless Spin-2 Pole
Lasma Alberte, Claudia de Rham, Sumer Jaitly +1
The presence of a massless spin-2 field in an effective field theory results in a -channel pole in the scattering amplitudes that precludes the application of standard positivit…
Positivity Constraints on Interacting Pseudo-Linear Spin-2 Fields
Lasma Alberte, Claudia de Rham, Arshia Momeni +2
We explore the effective field theory for single and multiple interacting pseudo-linear spin-2 fields. By applying forward limit positivity bounds, we show that among the parameter…
Positivity Constraints on Interacting Spin-2 Fields
Lasma Alberte, Claudia de Rham, Arshia Momeni +2
The consistency of the EFT of two interacting spin-2 fields is checked by applying forward limit positivity bounds on the scattering amplitudes to exclude the region of parameter s…