168 citations · 1.6k across the 33 of their papers we have counts for
34 papers
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…
Cosmology from asymptotically safe Proca theories
Carlos Pastor-Marcos, Lavinia Heisenberg, Álvaro Pastor-Gutiérrez +2
Effective field theories for cosmology offer a powerful framework to investigate the dynamics of space--time and address longstanding open puzzles. In this work, we initiate a prog…
Towards Two-to-Two Scattering of Scalars in Asymptotically Safe Quantum Gravity
Angelo P. Chiesa, Jan M. Pawlowski, Manuel Reichert
We compute the graviton-mediated two-to-two scattering amplitude and cross section for scalar particles in asymptotically safe quantum gravity. Specifically, we compute the full mo…
Gravitational Waves from Confinement in Yang-Mills Theory
Stephan Huber, Rory Phipps, Manuel Reichert
We provide a detailed analysis of the gravitational wave spectrum of pure Yang-Mills theory. The confinement phase transition is described with an effective Polyakov loop m…
Yukawa interactions in Quantum Gravity
Gustavo P. de Brito, Manuel Reichert, Marc Schiffer
We present the first complete next-to-leading-order analysis of a Yukawa system within the framework of asymptotically safe quantum gravity. Our results are obtained through a syst…
Self-consistent graviton spectral function in Lorentzian quantum gravity
Jan M. Pawlowski, Manuel Reichert, Jonas Wessely
We present the first fully self-consistent computation of the graviton spectral function in quantum gravity, using the spectral renormalisation group for gravity put forward in arX…
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…
Comment on Path integral measure and RG equations for gravity
Aaron Held, Benjamin Knorr, Jan M. Pawlowski +4
Asymptotic safety is a candidate for a predictive quantum theory of gravity and matter. Recent works (arXiv:2412.10194 and arXiv:2412.14108) challenged this scenario. We show that…
in the Asymptotically Safe Standard Model
Álvaro Pastor-Gutiérrez, Jan M. Pawlowski, Manuel Reichert +1
We study the electron-positron to muon--anti-muon cross-section in the asymptotically safe Standard Model. In particular, we include the graviton contributions to the scattering am…
Gravitational Waves from Composite Dark Sectors
Roman Pasechnik, Manuel Reichert, Francesco Sannino +1
We study under which conditions a first-order phase transition in a composite dark sector can yield an observable stochastic gravitational-wave signal. To this end, we employ the L…
Quantum Gravity from dynamical metric fluctuations
Jan M. Pawlowski, Manuel Reichert
In this contribution, we discuss the asymptotic safety scenario for quantum gravity by evaluating the correlation functions of dynamical metric fluctuations. This is done with a fu…
Gravitational Waves from dark composite dynamics
Manuel Reichert, Zhi-Wei Wang
We discuss the stochastic gravitational-wave spectrum from dark confinement and chiral phase transitions in the early Universe. Specifically, we look at pure Yang-Mills theory for…
Spectral Functions of Gauge Theories with Banks-Zaks Fixed Points
Yannick Kluth, Daniel Litim, Manuel Reichert
We investigate spectral functions of matter-gauge theories that are asymptotically free in the ultraviolet and display a Banks-Zaks conformal fixed point in the infrared. Using per…
The Asymptotically Safe Standard Model: From quantum gravity to dynamical chiral symmetry breaking
Álvaro Pastor-Gutiérrez, Jan M. Pawlowski, Manuel Reichert
We present a comprehensive non-perturbative study of the phase structure of the asymptotically safe Standard Model. The physics scales included range from the asymptotically safe t…
Renormalised spectral flows
Jens Braun, Yong-rui Chen, Wei-jie Fu +11
We derive renormalised finite functional flow equations for quantum field theories in real and imaginary time that incorporate scale transformations of the renormalisation conditio…
Lorentzian quantum gravity and the graviton spectral function
Jannik Fehre, Daniel F. Litim, Jan M. Pawlowski +1
We present the first direct and non-perturbative computation of the graviton spectral function in quantum gravity. This is achieved with the help of a novel Lorentzian renormalisat…
Dark Confinement and Chiral Phase Transitions: Gravitational Waves vs Matter Representations
Manuel Reichert, Francesco Sannino, Zhi-Wei Wang +1
We study the gravitational-wave signal stemming from strongly coupled models featuring both, dark chiral and confinement phase transitions. We therefore identify strongly coupled t…
Reconstructing the graviton
Alfio Bonanno, Tobias Denz, Jan M. Pawlowski +1
We reconstruct the Lorentzian graviton propagator in asymptotically safe quantum gravity from Euclidean data. The reconstruction is applied to both the dynamical fluctuation gravit…
Testing the dark SU(N) Yang-Mills theory Confined Landscape: From the Lattice to Gravitational Waves
Wei-Chih Huang, Manuel Reichert, Francesco Sannino +1
We pave the way for future gravitational-wave detection experiments, such as the Big Bang Observer and DECIGO, to constrain dark sectors made of SU(N) Yang-Mills confined theories.…
Universal gravitational-wave signatures from heavy new physics in the electroweak sector
Astrid Eichhorn, Johannes Lumma, Jan M. Pawlowski +2
We calculate the gravitational-wave spectra produced by the electroweak phase transition with TeV-scale Beyond-Standard-Model physics in the early universe. Our study captures the…
Quantum gravity: a fluctuating point of view
Jan M. Pawlowski, Manuel Reichert
In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a functional renormalisation group approach that disentangles dynamical metric fluctuations…
Towards the QED beta function and renormalons at and
Nicola Andrea Dondi, Gerald V. Dunne, Manuel Reichert +1
We determine the and contributions to the QED beta function stemming from the closed set of nested diagrams. At order we discover a new logarithmic br…
Curvature dependence of quantum gravity with scalars
Benjamin Bürger, Jan M. Pawlowski, Manuel Reichert +1
We compute curvature-dependent graviton correlation functions and couplings as well as the full curvature potential in asymptotically safe quantum gravity coupled to scalars…
Dark Matter meets Quantum Gravity
Manuel Reichert, Juri Smirnov
We search for an extension of the Standard Model that contains a viable dark matter candidate and that can be embedded into a fundamental, asymptotically safe, quantum field theory…