Results 21 to 30 of about 2,837 (210)
Adjoints and low-rank covariance representation [PDF]
Nonlinear Processes in Geophysics, 2001 Abstract. Quantitative measures of the uncertainty of Earth system estimates can be as important as the estimates themselves. Direct calculation of second moments of estimation errors, as described by the covariance matrix, is impractical when the number of degrees of freedom of the system state is large and the sources of uncertainty are not ...
Tippett, M. K., Cohn, S. E.
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Exploring Free Matrix CFT Holographies at One-Loop
Universe, 2017 We extend our recent study on the duality between stringy higher spin theories and free conformal field theories (CFTs) in the S U ( N ) adjoint representation to other matrix models, namely the free S O ( N ) and S p ( N ...
Jin-Beom Bae, Euihun Joung, Shailesh Lal
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On the N↔−N self-duality of su(N) theories
Nuclear Physics BWe generalize N↔−N duality of dimension formulae of SU(N) representations on a (class of the) representations with N-dependent Young diagrams, including adjoint representation.
R.L. Mkrtchyan
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Scientific Theories as Intervening Representations
Theoria, 2010 In this paper we use some ideas of Hertz and Duhem to propose a new concept of representation that overcomes the dichotomy between representation and intervention.
Andoni IBARRA, Thomas MORMANN
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Gauging 1-form center symmetries in simple SU(N) gauge theories
Journal of High Energy Physics, 2020 Consequences of gauging exact ℤ k C $$ {\mathbb{Z}}_k^C $$ center symmetries in several simple SU(N) gauge theories, where k is a divisor of N, are investigated.
Stefano Bolognesi +2 more
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Continuous energy adjoint transport for photons in PHITS
EPJ Web of Conferences, 2017 Adjoint Monte Carlo can be an effcient algorithm for solving photon transport problems where the size of the tally is relatively small compared to the source. Such problems are typical in environmental radioactivity calculations, where natural or fallout
Malins Alex +2 more
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CAD Integrated Multipoint Adjoint-Based Optimization of a Turbocharger Radial Turbine
International Journal of Turbomachinery, Propulsion and Power, 2017 The adjoint method is considered as the most efficient approach to compute gradients with respect to an arbitrary number of design parameters. However, one major challenge of adjoint-based shape optimization methods is the integration into a computer ...
Lasse Mueller, Tom Verstraete
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Neural Fields for Highly Accelerated 2D Cine Phase Contrast MRI
Advanced Science, EarlyView.ABSTRACT 2D cine phase contrast (CPC) MRI provides quantitative information on blood velocity and flow within the human vasculature. However, data acquisition is time‐consuming, motivating the reconstruction of the velocity field from undersampled measurements to reduce scan times. In this work, neural fields are proposed as a continuous spatiotemporal
Pablo Arratia +7 more
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Partition function of free conformal fields in 3-plet representation
Journal of High Energy Physics, 2017 Simplest examples of AdS/CFT duality correspond to free CFTs in d dimensions with fields in vector or adjoint representation of an internal symmetry group dual in the large N limit to a theory of massless or massless plus massive higher spins in AdS d+1.
Matteo Beccaria, Arkady A. Tseytlin
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Development of a variational flux inversion system (INVICAT v1.0) using the TOMCAT chemical transport model [PDF]
Geoscientific Model Development, 2014 We present a new variational inverse transport model, named INVICAT (v1.0), which is based on the global chemical transport model TOMCAT, and a new corresponding adjoint transport model, ATOMCAT.
C. Wilson +3 more
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