Results 41 to 50 of about 47,684,316 (289)
S -Matrix for massless particles [PDF]
, 2019 The traditional $S$-matrix does not exist for theories with massless particles, such as quantum electrodynamics. The difficulty in isolating asymptotic states manifests itself as infrared divergences at each order in perturbation theory.
Holmfridur S. Hannesdottir, M. Schwartz
semanticscholar +1 more source
The simplest massive S-matrix: from minimal coupling to black holes [PDF]
Journal of High Energy Physics, 2018 A bstractIn this paper, we explore the physics of electromagnetically and gravitationally coupled massive higher spin states from the on-shell point of view.
M. Chung +3 more
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On the S-matrix of Ising field theory in two dimensions [PDF]
Journal of High Energy Physics, 2019 We explore the analytic structure of the non-perturbative S-matrix in arguably the simplest family of massive non-integrable quantum field theories: the Ising field theory (IFT) in two dimensions, which may be viewed as the Ising CFT deformed by its two ...
Barak Gabai, Xi Yin
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CLUSTERED MATRIX APPROXIMATION [PDF]
, 2016 In this paper we develop a novel clustered matrix approximation framework, first showing the motivation behind our research. The proposed methods are particularly well suited for problems with large scale sparse matrices that represent graphs and/or ...
Savas, Berkant +3 more
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On the massless tree-level S-matrix in 2d sigma models [PDF]
Journal of Physics A: Mathematical and Theoretical, 2018 Motivated by the search for new integrable string models, we study the properties of massless tree-level S-matrices for 2d -models expanded near the trivial vacuum. We find that, in contrast to the standard massive case, there is no apparent link between
B. Hoare, Nat Levine, A. Tseytlin
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Correlation of Matrix Metalloproteinases and Tissue Inhibitors of Matrix Metalloproteinase Expression in Ileal Carcinoids, Lymph Nodes and Liver Metastasis with Prognosis and Survival [PDF]
, 2009 Purpose: Ileal carcinoids are gut epithelial tumors originating from serotonin-containing enterochromaffin (EC) cells. Therapeutic options for effectively inhibiting the growth and spread of metastatic carcinoids are still limited.
Braun, Thomas +11 more
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Effect of the matrix behavior on the damage of ethylene–propylene glass fiber reinforced composite subjected to high strain rate tension [PDF]
, 2012 This study investigates the origin of the strain rate effect on the mechanical behavior of a discontinuous glass fiber reinforced ethylene–propylene copolymer (EPC) matrix composite.
FITOUSSI, Joseph +2 more
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s-Goodness for Low-Rank Matrix Recovery
Abstract and Applied Analysis, 2013 Low-rank matrix recovery (LMR) is a rank minimization problem subject to linear equality constraints, and it arises in many fields such as signal and image processing, statistics, computer vision, and system identification and control.
Lingchen Kong +2 more
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Non-local matrix elements in B (s) → {K (*) , ϕ}ℓ + ℓ −
Journal of High Energy Physics, 2021 We revisit the theoretical predictions and the parametrization of non-local matrix elements in rare B ¯ s → K ¯ ∗ ϕ ℓ + ℓ − $$ {\overline{B}}_{(s)}\to \left\{{\overline{K}}^{\left(\ast \right)},\phi \right\}{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ and B
Nico Gubernari +2 more
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Towards a nonperturbative construction of the S-matrix
Journal of High Energy Physics, 2023 We present a nonperturbative recipe for directly computing the S-matrix in strongly-coupled QFTs. The method makes use of spectral data obtained in a Hamiltonian framework and can be applied to a wide range of theories, including potentially QCD.
Brian Henning +4 more
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