Results 71 to 80 of about 802,166 (283)
Nested Selves: Self‐Organization and Shared Markov Blankets in Prenatal Development in Humans
Topics in Cognitive Science, EarlyView., 2023 Abstract The immune system is a central component of organismic function in humans. This paper addresses self‐organization of biological systems in relation to—and nested within—other biological systems in pregnancy. Pregnancy constitutes a fundamental state for human embodiment and a key step in the evolution and conservation of our species. While not
Anna Ciaunica +3 more
wiley +1 more source
Computing the effective action with the functional renormalization group [PDF]
The European Physical Journal C, 2016 40 ...
Codello, A. +3 more
openaire +5 more sources
The renormalization group with exact β-functions [PDF]
Canadian Journal of Physics, 2006 The perturbative β-function is known exactly in a number of supersymmetric theories and in the ‘t Hooft renormalization scheme in the [Formula: see text] model. It is shown how this allows one to compute the effective action exactly for certain background field configurations and to relate bare and renormalized couplings.
V Elias, D.G.C. McKeon
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Product Wave Function Renormalization Group [PDF]
Journal of the Physical Society of Japan, 1995 The authors propose a fast numerical renormalization group method --- the product wave function renormalization group (PWFRG) method --- for 1D quantum lattice models and 2D classical ones. A variational wave function, which is expressed by a matrix product, is improved through a self-consistent calculation.
Tomotoshi Nishino, Kouichi Okunishi
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On Multimatrix Models Motivated by Random Noncommutative Geometry I: The Functional Renormalization Group as a Flow in the Free Algebra [PDF]
Annales de l'Institute Henri Poincare. Physique theorique, 2020 Random noncommutative geometry can be seen as a Euclidean path-integral quantization approach to the theory defined by the Spectral Action in noncommutative geometry (NCG).
Carlos I. Pérez-Sánchez
semanticscholar +1 more source
The conformal sector of Quantum Einstein Gravity beyond the local potential approximation
Physics Letters B, 2023 The anomalous scaling of Newton's constant around the Reuter fixed point is dynamically computed using the functional flow equation approach. Specifically, we thoroughly analyze the flow of the most general conformally reduced Einstein-Hilbert action ...
Alfio Bonanno +2 more
doaj
Spectral functions from the real-time functional renormalization group [PDF]
, 2020 We employ the functional renormalization group approach formulated on the Schwinger-Keldysh contour to calculate real-time correlation functions in scalar field theories.
Sven Huelsmann, S. Schlichting, P. Scior
semanticscholar +1 more source
Functional renormalization-group approach [PDF]
, 2018 We present a functional renormalization-group approach to interacting topological Green's function invariants with a focus on the nature of transitions. The method is applied to chiral symmetric fermion chains in the Mott limit that can be driven into a ...
Karrasch, Christoph, Sbierski, Björn
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Functional renormalization group approach to zero-dimensional interacting systems
, 2004 We apply the functional renormalization group method to the calculation of dynamical properties of zero-dimensional interacting quantum systems. As case studies we discuss the anharmonic oscillator and the single impurity Anderson model.
Allen J W +28 more
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Renormalization of the 4PI effective action using the functional renormalization group [PDF]
Physical Review D, 2019 Techniques based on $n$-particle irreducible effective actions can be used to study systems where perturbation theory does not apply. The main advantage, relative to other non-perturbative continuum methods, is that the hierarchy of integral equations that must be solved truncates at the level of the action, and no additional approximations are needed.
Carrington, M. E. +3 more
openaire +3 more sources