Results 31 to 40 of about 12,765,544 (342)
Renormalization group evolution with scalar leptoquarks
Journal of High Energy Physics, 2023 Leptoquarks are theoretically well-motivated and have received increasing attention in recent years as they can explain several hints for physics beyond the Standard Model.
Sumit Banik, Andreas Crivellin
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Bond-weighted tensor renormalization group [PDF]
Physical review B, 2020 We propose an improved tensor renormalization group (TRG) algorithm, the bond-weighted TRG (BTRG). In BTRG, we generalize the conventional TRG by introducing bond weights on the edges of the tensor network.
Daiki Adachi, T. Okubo, S. Todo
semanticscholar +1 more source
Renormalization group and universality [PDF]
Physical Review D, 1995 It is argued that universality is severely limited for models with multiple fixed points. As a demonstration the renormalization group equations are presented for the potential and the wave function renormalization constants in the $O(N)$ scalar field theory.
Liao, Sen-Ben, Polonyi, Janos
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Automatic differentiable numerical renormalization group
Physical Review Research, 2022 Machine learning techniques have recently gained prominence in physics, yielding a host of new results and insights. One key concept is that of backpropagation, which computes the exact gradient of any output of a program with respect to any input.
Jonas B. Rigo, Andrew K. Mitchell
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Higher logarithms and ε-poles for the MS-like renormalization prescriptions
Journal of High Energy Physics, 2023 We consider a version of dimensional regularization (reduction) in which the dimensionful regularization parameter Λ is in general different from the renormalization scale μ.
N. P. Meshcheriakov +2 more
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The density matrix renormalization group in chemistry and molecular physics: Recent developments and new challenges. [PDF]
Journal of Chemical Physics, 2019 In the past two decades, the density matrix renormalization group (DMRG) has emerged as an innovative new method in quantum chemistry relying on a theoretical framework very different from that of traditional electronic structure approaches.
Alberto Baiardi, M. Reiher
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Renormalization group therapy [PDF]
Physical Review D, 2007 We point out a general problem with the procedures commonly used to obtain improved actions from MCRG decimated configurations. Straightforward measurement of the couplings from the decimated configurations, by one of the known methods, can result into actions that do not correctly reproduce the physics on the undecimated lattice.
Tomboulis, E. T., Velytsky, A.
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Topological defect lines and renormalization group flows in two dimensions [PDF]
Journal of High Energy Physics, 2018 A bstractWe consider topological defect lines (TDLs) in two-dimensional conformal field theories. Generalizing and encompassing both global symmetries and Verlinde lines, TDLs together with their attached defect operators provide models of fusion ...
Chi-Ming Chang +4 more
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Physical Review Letters, 2020 We develop a two stage renormalization group which connects the continuum Hamiltonian for twisted bilayer graphene at length scales shorter than the moire superlattice period to the Hamiltonian for the active narrow bands only which is valid at distances
O. Vafek, Jian Kang
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Ward-constrained melonic renormalization group flow
Physics Letters B, 2020 In recent years, interesting investigations of the nonperturbative renormalization group equations for tensorial group field theories have been performed in the truncation method, while completely discarding the Ward identities from their analysis.
Vincent Lahoche, Dine Ousmane Samary
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