The cosmological bootstrap: inflationary correlators from symmetries and singularities
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2020)105
Abstract: Scattering amplitudes at weak coupling are highly constrained by Lorentz invariance, locality and unitarity, and depend on model details only through coupling constants and the particle content of the theory. For example, four-particle amplitudes are… read more here.
Keywords: four point; point; exchange; inflationary correlators ... See more keywords
Higher spin supersymmetry at the cosmological collider: sculpting SUSY rilles in the CMB
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2019)156
Abstract: Abstract We study the imprint of higher spin supermultiplets on cosmological correlators, namely the non-Gaussianity of the cosmic microwave background. Supersymmetry is used as a guide to introduce the contribution of fermionic higher spin particles,… read more here.
Keywords: point function; higher spin; spin supersymmetry; spin ... See more keywords
A midpoint function and an end point function in continua
Sign Up to like & getrecommendations! Published in 2018 at "Topology and its Applications"
DOI: 10.1016/j.topol.2017.11.036
Abstract: Abstract In this paper we consider the hyperspace of arcs and singletons of a continuum and we study properties of an end point function and a midpoint function defined in such hyperspace. We investigate conditions… read more here.
Keywords: end point; function end; midpoint function; function ... See more keywords
Probing non-Gaussian stochastic gravitational wave backgrounds with LISA
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2018/11/034
Abstract: The stochastic gravitational wave background (SGWB) contains a wealth of information on astrophysical and cosmological processes. A major challenge of upcoming years will be to extract the information contained in this background and to disentangle… read more here.
Keywords: non gaussian; stochastic gravitational; point function; gravitational wave ... See more keywords
A study of non-linear Langevin dynamics under non-Gaussian noise with quartic cumulant
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Statistical Mechanics: Theory and Experiment"
DOI: 10.1088/1742-5468/ac4aef
Abstract: We consider a non-linear Langevin equation in presence of non-Gaussian noise originating from non-linear bath. We claim, the parameters in the Langevin equation are not physical. The physical parameters are obtained from a path-integral description… read more here.
Keywords: point function; non linear; gaussian noise; linear langevin ... See more keywords
Three-particle $N\pi\pi$ state contribution to the nucleon two-point function in lattice QCD
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.97.094507
Abstract: The three-particle $N\pi\pi$-state contribution to the QCD two-point function of standard nucleon interpolating fields is computed to leading order in chiral perturbation theory. Using the experimental values for two low-energy coefficients the impact of this… read more here.
Keywords: three particle; contribution; two point; state contribution ... See more keywords
One-point function estimates for loop-erased random walk in three dimensions
Sign Up to like & getrecommendations! Published in 2019 at "Electronic Journal of Probability"
DOI: 10.1214/19-ejp361
Abstract: In this work, we consider loop-erased random walk (LERW) in three dimensions and give an asymptotic estimate on the one-point function for LERW and the non-intersection probability of LERW and simple random walk in three… read more here.
Keywords: loop erased; erased random; three dimensions; point function ... See more keywords