EFT of interacting spin-2 fields
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2020)131
Abstract: We consider the effective field theory of multiple interacting massive spin-2 fields. We focus on the case where the interactions are chosen so that the cutoff is the highest possible, and highlight two distinct classes… read more here.
Keywords: interacting spin; spin; class; massive spin ... See more keywords
Twistor formulation of massless 6D infinite spin fields
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2021.115576
Abstract: We construct massless infinite spin irreducible representations of the six-dimensional Poincaré group in the space of fields depending on twistor variables. It is shown that the massless infinite spin representation is realized on the two-twistor… read more here.
Keywords: twistor; massless infinite; infinite spin; spin ... See more keywords
Probing higher-spin fields from inflation with higher-order statistics of the CMB
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/06/050
Abstract: We investigate the degree to which the Cosmic Microwave Background (CMB) can be used to constrain primordial non-Gaussianity coming from the presence of spinning particles coupled to the inflaton. We compute the $\langle TTT \rangle$… read more here.
Keywords: order; probing higher; higher spin; spin ... See more keywords
Master equations and quasinormal modes of spin- 3/2 fields in Schwarzschild (A)dS black hole spacetimes
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.104018
Abstract: In this work, we consider spin-3/2 fields in Schwarzschild (anti-)de Sitter [(A)dS] black hole spacetimes. As this spacetime is different from the Ricci-flat cases, it is necessary to modify the covariant derivative to the supercovariant… read more here.
Keywords: black hole; hole spacetimes; fields schwarzschild; spin fields ... See more keywords
Spin-2 fields and the weak gravity conjecture
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DOI: 10.1103/physrevd.100.104033
Abstract: Recently, it has been argued that application of the Weak Gravity Conjecture (WGC) to spin-2 fields implies a universal upper bound on the cutoff of the effective theory for a single spin-2 field. We point… read more here.
Keywords: spin fields; weak gravity; spin; gravity conjecture ... See more keywords
Stochastic gravitational waves from spin- 3/2 fields
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.095032
Abstract: Stochastic gravitational waves can be produced during the preheating when out-of-equilibrium particles are produced with an anisotropic stress tensor. We discuss the case where these particles carry spin 3/2. We compute the spectrum of the… read more here.
Keywords: waves spin; spin fields; gravitational waves; stochastic gravitational ... See more keywords
Interactions for Partially-Massless Spin-2 Fields
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Particles and Nuclei Letters"
DOI: 10.1134/s1547477120050064
Abstract: Partially massless (PM) fields of spin-2 have been subject to renewed attention in recent years after the important advances made in the understanding of massive gravity [1,2]. In four-dimensional de Sitter (dS4) spacetime with (positive)… read more here.
Keywords: interactions partially; partially massless; theory; spin ... See more keywords