Single-scale renormalisation group improvement of multi-scale effective potentials
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2018)014
Abstract: A bstractWe present a new method for renormalisation group improvement of the effective potential of a quantum field theory with an arbitrary number of scalar fields. The method amounts to solving the renormalisation group equation… read more here.
Keywords: renormalisation group; effective potential; group improvement; renormalisation ... See more keywords
Renormalisation group evolution effects on global SMEFT analyses
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2025)203
Abstract: Global analyses in the Standard Model Effective Field Theory (SMEFT) framework serve as a tool to probe potential directions of new physics. To break degeneracies between the Wilson coefficients of the SMEFT, it is essential… read more here.
Keywords: global smeft; renormalisation group; group evolution;
Relational observables in asymptotically safe gravity
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Physics"
DOI: 10.1016/j.aop.2022.168822
Abstract: We introduce an approach to compute the renormalisation group flow of relational observables in quantum gravity which evolve from their microscopic expressions towards the full quantum expectation value. This is achieved by using the composite… read more here.
Keywords: relational observables; gravity; renormalisation group; observables asymptotically ... See more keywords
Renormalisation group improvement in the stochastic formalism
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/09/023
Abstract: We investigate compatibility between the stochastic infrared (IR) resummation of light test fields on inflationary spacetimes and renormalisation group running of the ultra-violet (UV) physics. Using the Wilsonian approach, we derive improved stochastic Langevin and… read more here.
Keywords: renormalisation group; physics; group improvement; formalism ... See more keywords
Computing first-passage times with the functional renormalisation group
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/046
Abstract: We use Functional Renormalisation Group (FRG) techniques to analyse the behaviour of a spectator field, σ, during inflation that obeys an overdamped Langevin equation. We briefly review how a derivative expansion of the FRG can… read more here.
Keywords: renormalisation group; time; functional renormalisation; first passage ... See more keywords
Unveiling the different scaling regimes of the one-dimensional Kardar–Parisi–Zhang–Burgers equation using the functional renormalisation group
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Statistical Mechanics: Theory and Experiment"
DOI: 10.1088/1742-5468/ae1b85
Abstract: The Kardar–Parisi–Zhang (KPZ) equation is a celebrated non-linear stochastic equation featuring non-equilibrium scaling. Although its statistical properties are well understood in one dimension, a new scaling regime has been reported in recent numerical simulations. This… read more here.
Keywords: using functional; renormalisation group; parisi zhang; kardar parisi ... See more keywords