Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Reichert, Manuel"'
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 Linear-Sigma model featuring $N_f=3,4,5$ flavours and perform a Cornwal
Externí odkaz:
http://arxiv.org/abs/2309.16755
Autor:
Pawlowski, Jan M., Reichert, Manuel
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 functional renormalisation group approach that disentangles dynamical me
Externí odkaz:
http://arxiv.org/abs/2309.10785
Autor:
Reichert, Manuel, Wang, Zhi-Wei
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 an arbitrary number of colours as well as SU(3) with quarks in differe
Externí odkaz:
http://arxiv.org/abs/2211.08877
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 perturbation theory, Callan-Symanzik resummations, and UV-IR connecting r
Externí odkaz:
http://arxiv.org/abs/2207.14510
Publikováno v:
SciPost Phys. 15, 105 (2023)
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 trans-Planckian regime in the ultraviolet, the intermediate high-energy
Externí odkaz:
http://arxiv.org/abs/2207.09817
Autor:
Braun, Jens, Chen, Yong-rui, Fu, Wei-jie, Geißel, Andreas, Horak, Jan, Huang, Chuang, Ihssen, Friederike, Pawlowski, Jan M., Reichert, Manuel, Rennecke, Fabian, Tan, Yang-yang, Töpfel, Sebastian, Wessely, Jonas, Wink, Nicolas
We derive renormalised finite functional flow equations for quantum field theories in real and imaginary time that incorporate scale transformations of the renormalisation conditions, hence implementing a flowing renormalisation. The flows are manife
Externí odkaz:
http://arxiv.org/abs/2206.10232
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 renormalisation group approach, combined with a spectral representation of correla
Externí odkaz:
http://arxiv.org/abs/2111.13232
We study the gravitational-wave signal stemming from strongly coupled models featuring both, dark chiral and confinement phase transitions. We therefore identify strongly coupled theories that can feature a first-order phase transition. Employing the
Externí odkaz:
http://arxiv.org/abs/2109.11552
Publikováno v:
SciPost Phys. 12, 001 (2022)
We reconstruct the Lorentzian graviton propagator in asymptotically safe quantum gravity from Euclidean data. The reconstruction is applied to both the dynamical fluctuation graviton and the background graviton propagator. We prove that the spectral
Externí odkaz:
http://arxiv.org/abs/2102.02217
Testing the dark SU(N) Yang-Mills theory Confined Landscape: From the Lattice to Gravitational Waves
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. We go beyond the state-of-the-art by combining first principle lattic
Externí odkaz:
http://arxiv.org/abs/2012.11614