Results 1 to 10 of about 36,312 (298)
Journal of High Energy Physics, 2020 Abstract We study the 3-parametric family of vertex operator algebras based on the Grassmannian coset CFT $$ \mathfrak{u} $$ u (M + N )k /($$ \mathfrak{u} $$ u (M )k×$$ \mathfrak{u} $$ u (N )k ). This VOA serves as a basic building
Lorenz Eberhardt, Tomáš Procházka
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Network parametrizations for the Grassmannian [PDF]
Algebra & Number Theory, 2013 Deodhar introduced his decomposition of partial flag varieties as a tool for understanding Kazhdan-Lusztig polynomials. The Deodhar decomposition of the Grassmannian is also useful in the context of soliton solutions to the KP equation, as shown by Kodama and the second author.
Talaska, Kelli, Williams, Lauren
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The Grassmannian for celestial superamplitudes [PDF]
Journal of High Energy Physics, 2021 Abstract Recently, scattering amplitudes in four-dimensional Minkowski spacetime have been interpreted as conformal correlation functions on the two-dimensional celestial sphere, the so-called celestial amplitudes.
Livia Ferro, Livia Ferro, Robert Moerman
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Grassmannian Frames with Applications to Coding and Communication [PDF]
arXiv, 2003 For a given class ${\cal F}$ of uniform frames of fixed redundancy we define a Grassmannian frame as one that minimizes the maximal correlation $|< f_k,f_l >|$ among all frames $\{f_k\}_{k \in {\cal I}} \in {\cal F}$.
Heath, Robert, Strohmer, Thomas
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Grassmannians and Cluster Structures. [PDF]
Bull Iran Math Soc, 2021 AbstractCluster structures have been established on numerous algebraic varieties. These lectures focus on the Grassmannian variety and explain the cluster structures on it. The tools include dimer models on surfaces, associated algebras, and the study of associated module categories.
Baur K.
europepmc +5 more sources
Secants of Lagrangian Grassmannians [PDF]
Annali di Matematica Pura ed Applicata, 2010 We study the dimensions of secant varieties of the Grassmannian of Lagrangian subspaces in a symplectic vector space. We calculate these dimensions for third and fourth secant varieties.
Ada Boralevi +8 more
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On the Classification of Residues of the Grassmannian [PDF]
Journal of High Energy Physics, 2010 We study leading singularities of scattering amplitudes which are obtained as residues of an integral over a Grassmannian manifold. We recursively do the transformation from twistors to momentum twistors and obtain an iterative formula for Yangian ...
A Brandhuber +55 more
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Differential Geometry and its Applications, 2014 25 ...
M. E. Di Iorio y Lucero +3 more
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Journal of Algebra, 2018 We study the projective variety CG parametrizing four dimensional subalgebras of the complex octonions, which we call the Cayley Grass-mannian. We prove that it is a spherical G2-variety with only three orbits that we describe explicitely. Its cohomology ring has a basis of Schubert type classes and we determine the intersection product completely.
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Pursuing the double affine Grassmannian II: Convolution [PDF]
, 2011 This is the second paper of a series (started by arXiv:0711.2083) which describes a conjectural analog of the affine Grassmannian for affine Kac-Moody groups (also known as the double affine Grassmannian).
Braverman, Alexander +1 more
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