41 citations · 66 across the 7 of their papers we have counts for
7 papers
Effective Field Theory and In-In Correlators
Daniel Green, Guanhao Sun
The predictions of inflation are usually defined in terms of equal time in-in correlation functions in an accelerating cosmological background. These same observables exist for qua…
Black hole superradiance with (dark) matter accretion
Lam Hui, Y. T. Albert Law, Luca Santoni +3
Studies of black hole superradiance often focus on the growth of a cloud in isolation, accompanied by the spin-down of the black hole. In this paper, we consider the additional eff…
An improved Noether's theorem for spacetime symmetries
Ioanna Kourkoulou, Alberto Nicolis, Guanhao Sun
We exploit an ambiguity somewhat hidden in Noether's theorem to derive systematically, for relativistic field theories, the stress-energy tensor's improvement terms that are associ…
A technical analog of the cosmological constant problem and a solution thereof
Ioanna Kourkoulou, Alberto Nicolis, Guanhao Sun
The near vanishing of the cosmological constant is one of the most puzzling open problems in theoretical physics. We consider a system, the so-called framid, that features a techni…
Scalar-tensor mixing from icosahedral inflation
Alberto Nicolis, Guanhao Sun
We study the mixed scalar-tensor two-point function in icosahedral inflation. Within the regime of validity of the effective field theory, this has to be perturbatively small; in p…
The coset construction for particles of arbitrary spin
Michael J. Landry, Guanhao Sun
When a Poincaré-invariant system spontaneously breaks continuous internal symmetries, Goldstones's theorem demands the existence of massless, spin-zero excitations in a one-to-one…
Impact of QCD jets and heavy-quark production in cosmic-ray proton atmospheric showers up to 10 eV
David d'Enterria, Tanguy Pierog, Guanhao Sun
The PYTHIA 6 Monte Carlo (MC) event generator, commonly used in collider physics, is interfaced for the first time with a fast transport simulation of a hydrogen atmosphere, with t…