Some remarks on the renormalization group and Chapman‐Enskog type methods in singularly perturbed problems
Sign Up to like & getrecommendations! Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.6273
Abstract: In this paper, we show that for a large class of singularly perturbed problems, the classical Chapman‐Enskog asymptotic procedure leads, in a shorter way, to the same asymptotic expansion as the renormalization group (RG) approach.… read more here.
Keywords: perturbed problems; singularly perturbed; chapman enskog; renormalization group ... See more keywords
Renyi relative entropies and renormalization group flows
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DOI: 10.1007/jhep09(2018)166
Abstract: A bstractQuantum Renyi relative entropies provide a one-parameter family of distances between density matrices, which generalizes the relative entropy and the fidelity. We study these measures for renormalization group flows in quantum field theory. We… read more here.
Keywords: renormalization group; relative entropies; renormalization; group flows ... See more keywords
More about the Grassmann tensor renormalization group
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2021)188
Abstract: Abstract We derive a general formula of the tensor network representation for d-dimensional lattice fermions with ultra-local interactions, including Wilson fermions, staggered fermions, and domain-wall fermions. The Grassmann tensor is concretely defined with auxiliary Grassmann… read more here.
Keywords: grassmann tensor; renormalization group; tensor renormalization;
Real Space Renormalization Group Investigation of the Mixed Spins S = 1/2 and S = 3/2 Model
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-017-4242-y
Abstract: Using a real-space renormalization approach, namely the Migdal-Kadanoff one, we study the mixed Ising system with spins S = 1/2 and S = 3/2 on d-dimensional hypercubic lattice. We have determined the phase diagram in… read more here.
Keywords: space renormalization; renormalization group; real space;
Method of the Functional Renormalization Group in General Gauge Theories
Sign Up to like & getrecommendations! Published in 2017 at "Russian Physics Journal"
DOI: 10.1007/s11182-017-1120-9
Abstract: The problem of the gauge dependence of the effective field is considered within the framework of the method of the functional renormalization group for general gauge theories. read more here.
Keywords: group general; renormalization group; gauge; general gauge ... See more keywords
On holographic Wilsonian renormalization group of massive scalar theory with its self-interactions in AdS
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the Korean Physical Society"
DOI: 10.1007/s40042-021-00357-y
Abstract: Holographic model of massive scalar field with its self-interaction $$\lambda \phi ^n$$ λ ϕ n in AdS space is able to give a logarithmic scale dependence to marginal multi-trace deformation couplings on its dual conformal… read more here.
Keywords: theory; field; renormalization group; wilsonian renormalization ... See more keywords
Exploiting the scheme dependence of the renormalization group improvement in infrared Yang–Mills theory
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Physics"
DOI: 10.1016/j.aop.2022.168801
Abstract: Within the refined Gribov-Zwanziger scenario for four-dimensional Yang-Mills theory in the Landau gauge, a gluon mass term is generated from the restriction of the gauge field configurations to the first Gribov region. Tissier and Wschebor… read more here.
Keywords: renormalization; renormalization group; scheme dependence; mills theory ... See more keywords
An alternative approach to Michaelis-Menten kinetics that is based on the renormalization group.
Sign Up to like & getrecommendations! Published in 2018 at "Mathematical biosciences"
DOI: 10.1016/j.mbs.2017.11.012
Abstract: We apply to Michaelis-Menten kinetics an alternative approach to the study of Singularly Perturbed Differential Equations, that is based on the Renormalization Group (SPDERG). To this aim, we first rebuild the perturbation expansion for Michaelis-Menten… read more here.
Keywords: renormalization group; michaelis menten; alternative approach; menten kinetics ... See more keywords
Computational Method for Evaluating the Thermoelectric Power Factor for Organic Materials Modeled by the Holstein Model: A Time-Dependent Density Matrix Renormalization Group Formalism.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.2c00651
Abstract: Organic/polymeric materials are of emerging importance for thermoelectric conversion. The soft nature of these materials implies strong electron-phonon coupling, often leading to carrier localization. This poses great challenges for the conventional Boltzmann transport description based… read more here.
Keywords: renormalization group; time; density matrix; time dependent ... See more keywords
Improving the efficiency of the multireference driven similarity renormalization group via sequential transformation, density fitting, and the non-interacting virtual orbital approximation.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.9b00353
Abstract: This study examines several techniques to improve the efficiency of the linearized multireference driven similarity renormalization group truncated to one- and two-body operators [MR-LDSRG(2)]. We propose a sequential MR-LDSRG(2) [sq-MR-LDSRG(2)] approach, in which one-body substitutions… read more here.
Keywords: similarity renormalization; multireference; renormalization group; approximation ... See more keywords
Unusual renormalization group (RG) flow and temperature-dependent phase transition in strongly-insulating monolayer epitaxial graphene
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DOI: 10.1039/c7ra05463g
Abstract: By changing the measurement temperature (T), one can vary the effective sample size so as to study the renormalization group (RG) (or T-driven) flow of a semiconductor, a topological insulator, or a graphene device in… read more here.
Keywords: renormalization group; temperature; phase transition; group ... See more keywords