Quadratic gravity with propagating torsion and asymptotic freedom
Sign Up to like & getrecommendations! Published in 2025 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2025)130
Abstract: We consider a class of metric-affine gravitational theories with action quadratic in curvature and torsion tensors. Using the heat kernel technique, we compute the torsion contributions to the one-loop counterterms in the ultraviolet limit. It… read more here.
Keywords: quadratic gravity; torsion; torsion asymptotic; gravity propagating ... See more keywords
Critical behavior of a nonlocal ϕ4 field theory and asymptotic freedom
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.056023
Abstract: The critical behaviour of a non-local scalar field theory is studied. This theory has a non-local kinetic term which involves a real power 1-2\alpha of the Laplacian. The interaction term is the usual local \phi^{4}… read more here.
Keywords: non local; asymptotic freedom; theory; field ... See more keywords
Asymptotic Freedom and Large Spin Antiferromagnetic Chains.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.037202
Abstract: Building on the mapping of large-S spin chains onto the O(3) nonlinear σ model with coupling constant 2/S, and on general properties of that model (asymptotic freedom, implying that perturbation theory is valid at high… read more here.
Keywords: large spin; asymptotic freedom; spin; spin antiferromagnetic ... See more keywords