Zobrazeno 1 - 10
of 420
pro vyhledávání: '"Jan M. Pawlowski"'
Publikováno v:
SciPost Physics, Vol 15, Iss 4, p 149 (2023)
We calculate the spectral function of light quark flavours in 2+1 flavour vacuum QCD in the isospin-symmetric approximation. We employ spectral Dyson-Schwinger equations and compute the non-perturbative quark propagator directly in real-time, using r
Externí odkaz:
https://doaj.org/article/c3cd1602f988401e91a56f8e374e87e9
Publikováno v:
Data Science Journal, Vol 22, Pp 33-33 (2023)
Data science competencies receive rising attention. How can competency profiles be built for data scientists? This question is encountered by synthesizing various competency frameworks from the literature and by conducting a job advertisement analysi
Externí odkaz:
https://doaj.org/article/af9da67578d5467eb06577c4bba42f49
Publikováno v:
SciPost Physics, Vol 15, Iss 3, p 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:
https://doaj.org/article/ec414f5cfe634e8e932030c2c9ee4f85
Publikováno v:
SciPost Physics Core, Vol 6, Iss 3, p 061 (2023)
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:
https://doaj.org/article/266c6c2d3f1743828e976536c89db768
Publikováno v:
SciPost Physics, Vol 15, Iss 2, p 074 (2023)
In the present work we set up a general functional renormalisation group framework for the computation of complex effective actions. For explicit computations we consider both flows of the Wilsonian effective action and the one-particle irreducible (
Externí odkaz:
https://doaj.org/article/6eed9f5a62154b119443d1599961d753
Publikováno v:
SciPost Physics, Vol 14, Iss 4, p 069 (2023)
We investigate dynamical chiral symmetry breaking and the emergence of mesonic bound states from the infrared dynamics of four-quark scatterings. Both phenomena originate from the resonant scalar-pseudoscalar channel of the four-quark scatterings, an
Externí odkaz:
https://doaj.org/article/a9b62d6f71584563aad7fe227a8ef701
Publikováno v:
Research and Practice in Technology Enhanced Learning, Vol 15, Iss 1, Pp 1-26 (2020)
Abstract There is a gap between people’s online sharing of personal data and their concerns about privacy. Till now, this gap is addressed by attempting to match individual privacy preferences with service providers’ options for data handling. Th
Externí odkaz:
https://doaj.org/article/6221d37ce3144b94b230c185d46427df
Autor:
Fei Gao, Jan M. Pawlowski
Publikováno v:
Physics Letters B, Vol 820, Iss , Pp 136584- (2021)
We map out the QCD phase structure at finite temperature and chemical potential for 2-flavour and 2+1-flavour QCD. This is done within a generalised functional approach to QCD put forward in [1]. Specifically we compute the quark propagator and the f
Externí odkaz:
https://doaj.org/article/df9d44c79b3c4096ba8c0e56a1bfc807
Publikováno v:
Physics Letters B, Vol 792, Iss , Pp 310-314 (2019)
We explore asymptotic safety of gravity-matter systems, discovering indications for a near-perturbative nature of these systems in the ultraviolet. Our results are based on the dynamical emergence of effective universality at the asymptotically safe
Externí odkaz:
https://doaj.org/article/cd1b608ade3d4a24b83a2a61de27709b
Publikováno v:
SciPost Physics, Vol 13, Iss 2, p 042 (2022)
Lattice simulations along with studies in continuum QCD indicate that non-perturbative quantum fluctuations lead to an infrared regularisation of the gluon propagator in covariant gauges in the form of an effective mass-like behaviour. In the present
Externí odkaz:
https://doaj.org/article/d581b3692f9d4d19be0fd0575c1372df