Results 31 to 40 of about 3,541,835 (287)

On Products of Random Matrices

open access: yesEntropy, 2020
We introduce a family of models, which we name matrix models associated with children’s drawings—the so-called dessin d’enfant. Dessins d’enfant are graphs of a special kind drawn on a closed connected orientable surface (in the sky).
Natalia Amburg   +2 more
doaj   +1 more source

Generalized Fuzzy Torus and its Modular Properties

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2013
We consider a generalization of the basic fuzzy torus to a fuzzy torus with non-trivial modular parameter, based on a finite matrix algebra. We discuss the modular properties of this fuzzy torus, and compute the matrix Laplacian for a scalar field.
Paul Schreivogl, Harold Steinacker
doaj   +1 more source

Commuting Quantum Matrix Models [PDF]

open access: yes, 2014
We study a quantum system of $p$ commuting matrices and find that such a quantum system requires an explicit curvature dependent potential in its Lagrangian for the system to have a finite energy ground state.
Filev, Veselin G., O'Connor, Denjoe
core   +3 more sources

MATRIX MODEL THERMODYNAMICS [PDF]

open access: yesQuantum Theory and Symmetries, 2004
Presented at ``Circumnavigating Theoretical Physics'', in Memory of Ian Kogan, Oxford, U.K., January 2004.
openaire   +2 more sources

Solving matrix models using holomorphy [PDF]

open access: yes, 2003
We investigate the relationship between supersymmetric gauge theories with moduli spaces and matrix models. Particular attention is given to situations where the moduli space gets quantum corrected. These corrections are controlled by holomorphy.
D. Berenstein   +41 more
core   +3 more sources

Integrability and Matrix Models [PDF]

open access: yesUspekhi Fizicheskih Nauk, 1994
The theory of matrix models is reviewed from the point of view of its relation to integrable hierarchies. Discrete 1-matrix, 2-matrix, ``conformal'' (multicomponent) and Kontsevich models are considered in some detail, together with the Ward identites (``W-constraints''), determinantal formulas and continuum limits, taking one kind of models into ...
openaire   +3 more sources

Using matrix models to estimate aboveground forest biomass dynamics in the eastern USA through various combinations of LiDAR, Landsat, and forest inventory data

open access: yesEnvironmental Research Letters, 2018
The ability to harmonize data sources with varying temporal, spatial, and ecosystem measurements (e.g. forest structure to soil organic carbon) for creation of terrestrial carbon baselines is paramount to refining the monitoring of terrestrial carbon ...
Wu Ma   +5 more
doaj   +1 more source

Exact Superpotentials from Matrix Models [PDF]

open access: yes, 2002
Dijkgraaf and Vafa (DV) have conjectured that the exact superpotential for a large class of N=1 SUSY gauge theories can be extracted from the planar limit of a certain holomorphic matrix integral.
Annamaria Sinkovics   +11 more
core   +2 more sources

The formal demography of kinship VI: Demographic stochasticity and variance in the kinship network [PDF]

open access: yesDemographic Research
BACKGROUND: Although the matrix model for kinship networks includes many demographic processes, it is deterministic. It provides values of age-stage distributions of kin, but no information on (co)variances. Because kin populations are small, demographic
Hal Caswell
doaj   +1 more source

Knots and Matrix Models

open access: yesInfinite Dimensional Analysis, Quantum Probability and Related Topics, 1998
A generating function for knot diagrams is constructed. We consider a matrix model with d(N×N) matrices and show that in the limits N→∞ and d→0 the model describes the knot diagrams. The same limit in matrix string theory is also discussed. We speculate that a prototypical M(atrix) without matrix theory exists in void.
Aref'eva, I. Ya., Volovich, I. V.
openaire   +2 more sources

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