4 papers
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…