Results 1 to 10 of about 32,344 (267)
Machine Learning: Science and Technology, 2023 In this note we present a fully information theoretic approach to renormalization inspired by Bayesian statistical inference, which we refer to as Bayesian renormalization.
David S Berman +2 more
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Mathematics in Engineering, 2022 This work presents models for homogenizing or finding the effective transport or mechanical properties of microscale composites formed from highly contrasting phases described on a grid.
Ben J. Ransom, Dean R. Wheeler
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Vacuum Interaction of Crossed Cosmic Strings
Universe, 2021 In this paper, we consider the vacuum energy of a scalar field in the spacetime of two non-parallel cosmic strings. To this end, we obtain metrics for orthogonal straight cosmic strings and for slightly nonparallel strings.
Irina G. Pirozhenko
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Reconstruction of observed mechanical motions with artificial intelligence tools
New Journal of Physics, 2022 The goal of this paper is to determine the laws of observed trajectories assuming that there is a mechanical system in the background and using these laws to continue the observed motion in a plausible way.
Antal Jakovác +2 more
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The Problem of Renormalization of Chiral Nuclear Forces
Frontiers in Physics, 2020 Ever since quantum field theory was first applied to the derivation of nuclear forces in the mid-twentieth century, the renormalization of pion exchange with realistic couplings has presented a challenge.
U. van Kolck, U. van Kolck
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Optimizing Expected Shortfall under an ℓ1 Constraint—An Analytic Approach
Entropy, 2021 Expected Shortfall (ES), the average loss above a high quantile, is the current financial regulatory market risk measure. Its estimation and optimization are highly unstable against sample fluctuations and become impossible above a critical ratio r=N/T ...
Gábor Papp, Imre Kondor, Fabio Caccioli
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Dynamic and Renormalization-Group Extensions of the Landau Theory of Critical Phenomena
Entropy, 2020 We place the Landau theory of critical phenomena into the larger context of multiscale thermodynamics. The thermodynamic potentials, with which the Landau theory begins, arise as Lyapunov like functions in the investigation of the relations among ...
Miroslav Grmela +2 more
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Coarse Graining Spin Foam Quantum Gravity—A Review
Frontiers in Physics, 2020 In quantum gravity, we envision renormalization as the key tool for bridging the gap between microscopic models and observable scales. For spin foam quantum gravity, which is defined on a discretization akin to lattice gauge theories, the goal is to ...
Sebastian Steinhaus
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A measure of identifying influential community based on the state of critical functionality
Mathematical Biosciences and Engineering, 2020 As an open issue, the measure of community influential is no uniform standard, how to measure the influence of community has attracted extensive attention. This paper proposed a quantitative measure to identify the influence of community.
Mingli Lei , Daijun Wei
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Towards a Unitary, Renormalizable, and Ultraviolet-Complete Quantum Theory of Gravity
Frontiers in Physics, 2020 For any fundamental quantum field theory, unitarity, renormalizability, and relativistic invariance are considered to be essential properties.
Christian F. Steinwachs
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