Results 91 to 100 of about 42,508 (228)

More on pure gravity with a negative cosmological constant

Journal of High Energy Physics, 2023
We identify an ambiguity in the Chern-Simons formulation of three-dimensional gravity with negative cosmological constant that originates in an outer automorphism of the Lie algebra sl $$ \mathfrak{sl} $$ (2, ℝ).
Lior Benizri, Jan Troost
doaj   +1 more source

Free energy expansions of a conditional GinUE and large deviations of the smallest eigenvalue of the LUE

Communications on Pure and Applied Mathematics, Volume 78, Issue 12, Page 2247-2304, December 2025.
Abstract We consider a planar Coulomb gas ensemble of size N$N$ with the inverse temperature β=2$\beta =2$ and external potential Q(z)=|z|2−2clog|z−a|$Q(z)=|z|^2-2c \log |z-a|$, where c>0$c>0$ and a∈C$a \in \mathbb {C}$. Equivalently, this model can be realised as N$N$ eigenvalues of the complex Ginibre matrix of size (c+1)N×(c+1)N$(c+1) N \times (c+1)
Sung‐Soo Byun, Seong‐Mi Seo, Meng Yang   +2 more
wiley   +1 more source

On irregular singularity wave functions and superconformal indices

Journal of High Energy Physics, 2017
We generalize, in a manifestly Weyl-invariant way, our previous expressions for irregular singularity wave functions in two-dimensional SU(2) q-deformed Yang-Mills theory to SU(N).
Matthew Buican, Takahiro Nishinaka
doaj   +1 more source

Non-abelian infrared divergences on the celestial sphere

Journal of High Energy Physics, 2021
We consider the infrared factorisation of non-abelian multi-particle scattering amplitudes, and we study the form of the universal colour operator responsible for infrared divergences, when expressed in terms of coordinates on the ‘celestial sphere ...
Lorenzo Magnea
doaj   +1 more source

Image space formalism of convolutional neural networks for k‐space interpolation

Magnetic Resonance in Medicine, Volume 94, Issue 6, Page 2680-2701, December 2025.
Abstract Purpose Noise resilience in image reconstructions by scan‐specific robust artificial neural networks for k‐space interpolation (RAKI) is linked to nonlinear activations in k‐space. To gain a deeper understanding of this relationship, an image space formalism of RAKI is introduced for analyzing noise propagation analytically, identifying and ...
P. Dawood, F. Breuer, M. Gram, I. Homolya, P. M. Jakob, M. Zaiss, M. Blaimer   +6 more
wiley   +1 more source

Gause Symmetry and Howe Duality in 4D Conformal Field Theory Models

Acta Polytechnica, 2010
It is known that there are no local scalar Lie fields in more than two dimensions. Bilocal fields, however, which naturally arise in conformal operator product expansions, do generate infinite Lie algebras.
I. Todorov
doaj  

Unconventional conformal invariance of maximal depth partially massless fields on dS 4 and its relation to complex partially massless SUSY

Journal of High Energy Physics
Deser and Waldron have shown that maximal depth partially massless theories of higher (integer) spin on four-dimensional de Sitter spacetime (dS 4) possess infinitesimal symmetries generated by the conformal Killing vectors of dS 4. However, it was later
Vasileios A. Letsios
doaj   +1 more source

On the Locality of Formal Distributions Over Right-Symmetric and Novikov Algebras

Известия Иркутского государственного университета: Серия "Математика"
The Dong Lemma in the theory of vertex algebras states that the locality property of formal distributions over a Lie algebra is preserved under the action of a vertex operator. A similar statement is known for associative algebras.
L. A. Bokut, P. S. Kolesnikov
doaj   +1 more source

Dual spaces of geodesic currents

Journal of Topology, Volume 18, Issue 4, December 2025.
Abstract Every geodesic current on a hyperbolic surface has an associated dual space. If the current is a lamination, this dual embeds isometrically into a real tree. We show that, in general, the dual space is a Gromov hyperbolic metric tree‐graded space, and express its Gromov hyperbolicity constant in terms of the geodesic current.
Luca De Rosa, Dídac Martínez‐Granado
wiley   +1 more source

N =4 ℓ-conformal Galilei superalgebras inspired by D(2, 1; α) supermultiplets

Journal of High Energy Physics, 2017
N = 4 supersymmetric extensions of the ℓ-conformal Galilei algebra are constructed by properly extending the Lie superalgebra associated with the most general N = 4 superconformal group in one dimension D(2,1;α).
Anton Galajinsky, Sergey Krivonos
doaj   +1 more source