Positivity bounds on effective field theories with spontaneously broken Lorentz invariance

Autor:	Creminelli, Paolo, Janssen, Oliver, Senatore, Leonardo
Rok vydání:	2022
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP09(2022)201
Popis:	We derive positivity bounds on EFT coefficients in theories where boosts are spontaneously broken. We employ the analytic properties of the retarded Green's function of conserved currents (or of the stress-energy tensor) and assume the theory becomes conformal in the UV. The method is general and applicable to both cosmology and condensed matter systems. As a concrete example, we look at the EFT of conformal superfluids which describes the universal low-energy dynamics of CFT's at large chemical potential and we derive inequalities on the coefficients of the operators, in three dimensions, at NLO and NNLO. Comment: 31+14 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2207.14224 Zobrazit plný text záznamu View this record from Arxiv