Results 141 to 150 of about 1,476,489 (293)
Connection between the renormalization groups of Stückelberg-Petermann and Wilson [PDF]
Confluentes Mathematici, Vol. 4, No. 1 (2012) 12400014, 2010 The Stueckelberg-Petermann renormalization group is the group of finite renormalizations of the S-matrix in the framework of causal perturbation theory. The renormalization group in the sense of Wilson relies usually on a functional integral formalism, it describes the dependence of the theory on a UV-cutoff $\Lambda$; a widespread procedure is to ...
arxiv +1 more source
Analysis of density matrix embedding theory around the non‐interacting limit
Communications on Pure and Applied Mathematics, EarlyView.Abstract This article provides the first mathematical analysis of the Density Matrix Embedding Theory (DMET) method. We prove that, under certain assumptions, (i) the exact ground‐state density matrix is a fixed‐point of the DMET map for non‐interacting systems, (ii) there exists a unique physical solution in the weakly‐interacting regime, and (iii ...
Eric Cancès +4 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2023 We explore the effect of quantum gravity on matter within a Renormalization Group framework. First, our results provide an explicit example of how misleading conclusions can be drawn by analyzing the gravitational contributions to beta functions, instead
Gustavo P. de Brito, Astrid Eichhorn
doaj +1 more source
Communications on Pure and Applied Mathematics, EarlyView.Abstract The problem of deriving a gradient flow structure for the porous medium equation which is thermodynamic, in that it arises from the large deviations of some microscopic particle system is studied. To this end, a rescaled zero‐range process with jump rate g(k)=kα,α>1$g(k)=k^\alpha, \alpha >1$ is considered, and its hydrodynamic limit and ...
Benjamin Gess, Daniel Heydecker
wiley +1 more source
International Journal of Cancer, EarlyView.What's New? Tumor necrosis factor (TNF) can promote tumor resistance to immune checkpoint inhibitors (ICIs), which are now the standard treatment for advanced melanoma patients. Here, in an advanced melanoma patient cohort, TNF was investigated for a possible predictive relationship with ICI response. Assessments show that after 12 weeks of ICI therapy,
Mathieu Virazels +18 more
wiley +1 more source
Two-particle irreducible functional renormalization group schemes---a comparative study
, 2015 We derive functional renormalization group schemes for Fermi systems which are based on the two-particle irreducible approach to the quantum many-body problem.
Jakobs, Severin Georg +2 more
core +1 more source
Geometric Operators in the Einstein–Hilbert Truncation
Universe, 2019 We review the study of the scaling properties of geometric operators, such as the geodesic length and the volume of hypersurfaces, in the context of the Asymptotic Safety scenario for quantum gravity. We discuss the use of such operators and how they can
Maximilian Becker, Carlo Pagani
doaj +1 more source
Composite operators in functional renormalization group approach [PDF]
, 2017 The gauge dependence problem of the effective action for general gauge theories in the framework of a modified functional renormalization group approach proposed recently is studied. It is shown that the effective action remains gauge-dependent on-shell.
arxiv +1 more source
Evaluation of spectral zeta-functions with the renormalization group [PDF]
Journal of Physics A: Mathematical and Theoretical, 2017 24 pages, 7 figures, numerous ...
Shanshan Li, Stefan Boettcher
openaire +3 more sources
Eliashberg equations derived from the functional renormalization group
, 2005 We describe how the fermionic functional renormalization group (fRG) flow of a Cooper+forward scattering problem can be continued into the superconducting state.
Honerkamp, Carsten, Salmhofer, Manfred
core +1 more source