22 citations · 42 across the 12 of their papers we have counts for
12 papers
Constraining the real singlet extension of the Standard Model: implications for vacuum stability
Moritz Bosse, Gudrun Hiller, Daniel Litim +4
Amongst the simplest extensions of the Standard Model is the addition of a real singlet scalar field with profound phenomenological consequences. The singlet can catalyze a strong…
Spectral Functions of Lorentzian Quantum Gravity
Gabriel Assant, Daniel F. Litim, Manuel Reichert
We compute spectral functions of graviton modes in Lorentzian quantum gravity, interpolating between classical general relativity and an asymptotically safe ultraviolet fixed point…
Constraining the real scalar singlet extension of the SM
Moritz Bosse, Gudrun Hiller, Daniel Litim +4
The real scalar singlet extension of the standard model provides a minimal framework in which the Higgs sector can realise a strong first-order electroweak phase transition and imp…
Four Fermi Theory in Four Dimensions is Renormalisable
Charlie Cresswell-Hogg, Daniel F. Litim
We demonstrate the renormalisability of quantum field theories in four dimensions with elementary self-interacting Dirac fermions and to leading order in the limit of many fermion…
Fixed points of semi-simple supersymmetric gauge theories
Andrew D. Bond, Daniel F. Litim, Gabriel Picanço
We study fixed points and phase diagrams of semi-simple supersymmetric gauge theories coupled to chiral superfields and a superpotential. Particular emphasis is put on new phenomen…
Matter Spectral Functions from Quantum Gravity
Varun Kher, Brandon King, Daniel F. Litim +1
We investigate Lorentzian quantum gravity coupled to a template matter sector with gauge fields, scalars and fermions. In the absence of quantised gravity, the matter sector by its…
Fermions and the Renormalisation Group at Large N
Charlie Cresswell-Hogg, Daniel F. Litim
We investigate fermionic quantum field theories using functional renormalisation. In the limit of many fermion flavours , we demonstrate that theories have exact solutions for t…
Dilaton Physics from Asymptotic Freedom
Charlie Cresswell-Hogg, Daniel F. Litim, Roman Zwicky
The dilaton is investigated from first principles in an asymptotically free Gross-Neveu-Yukawa theory in three dimensions. In the limit of many fermion flavours, the theory feature…
Fermion Mass Generation without Symmetry Breaking
Charlie Cresswell-Hogg, Daniel F. Litim
We study the generation of fermion mass in a context where interactions break a discrete chiral symmetry. Then, fermion mass is not protected by a symmetry, no symmetry is broken b…
Vacuum Stability in the Standard Model and Beyond
Gudrun Hiller, Tim Höhne, Daniel F. Litim +1
We revisit the stability of the Standard Model vacuum, and investigate its quantum effective potential using the highest available orders in perturbation theory and the most accura…
Two is better than one: The U-spin-CP anomaly in charm
Rigo Bause, Hector Gisbert, Gudrun Hiller +3
The recent measurement of the CP-asymmetry in the decay by LHCb, combined with , evidences a sizable CP-asymmetry in decays, which r…
Gauge invariance, background fields and modified Ward identities
F. Freire, D. F. Litim, J. M. Pawlowski
In this talk the gauge symmetry for Wilsonian flows in pure Yang-Mills theories is discussed. The background field formalism is used for the construction of a gauge invariant effec…