Results 11 to 20 of about 16,140 (179)

Poincaré problem with measurable data for semilinear Poisson equation in the plane

open access: yesДоповiдi Нацiональної академiї наук України, 2022
We study the Poincaré boundary-value problem with measurable in terms of the logarithmic capacity boundary data for semilinear Poisson equations defined either in the unit disk or in Jordan domains with quasihyperbolic boundary condition.
V.Ya. Gutlyanskiĭ   +3 more
doaj   +1 more source

The Siegel–Klein Disk: Hilbert Geometry of the Siegel Disk Domain

open access: yesEntropy, 2020
We study the Hilbert geometry induced by the Siegel disk domain, an open-bounded convex set of complex square matrices of operator norm strictly less than one.
Frank Nielsen
doaj   +1 more source

Tau functions for the Dirac operator on the Poincaré disk [PDF]

open access: yesCommunications in Mathematical Physics, 1994
92 ...
Palmer, John   +2 more
openaire   +5 more sources

Entanglement entropy in cubic gravitational theories

open access: yesJournal of High Energy Physics, 2021
We derive the holographic entanglement entropy functional for a generic gravitational theory whose action contains terms up to cubic order in the Riemann tensor, and in any dimension.
Elena Cáceres   +2 more
doaj   +1 more source

Escher in the Sky [PDF]

open access: yes, 2015
The cosmological models called $\alpha$-attractors provide an excellent fit to the latest observational data. Their predictions $n_{s} = 1-2/N$ and $r = 12\alpha/N^{2}$ are very robust with respect to the modifications of the inflaton potential.
Kallosh, Renata, Linde, Andrei
core   +2 more sources

Towards explicit discrete holography: Aperiodic spin chains from hyperbolic tilings

open access: yesSciPost Physics, 2022
We propose a new example of discrete holography that provides a new step towards establishing the AdS/CFT duality for discrete spaces. A class of boundary Hamiltonians is obtained in a natural way from regular tilings of the hyperbolic Poincaré disk, via
Pablo Basteiro, Giuseppe Di Giulio, Johanna Erdmenger, Jonathan Karl, René Meyer, Zhuo-Yu Xian
doaj   +1 more source

Global AdS Picture of 1/2 BPS Wilson Loops [PDF]

open access: yes, 2010
We study the holographic dual string configuration of 1/2 BPS circular Wilson loops in N=4 super Yang-Mills theory by using the global coordinate of AdS.
A Dymarsky   +14 more
core   +3 more sources

Transversal conics and the existence of limit cycles [PDF]

open access: yes, 2014
This paper deals with the problem of location and existence of limit cycles for real planar polynomial differential systems. We provide a method to construct Poincar\'e--Bendixson regions by using transversal conics.
Giacomini, Héctor, Grau, Maite
core   +3 more sources

A New Hyperbolic Area Formula of a Hyperbolic Triangle and Its Applications

open access: yesJournal of Mathematics, 2014
We study some characterizations of hyperbolic geometry in the Poincaré disk. We first obtain the hyperbolic area and length formula of Euclidean disk and a circle represented by its Euclidean center and radius.
Hui Bao, Xingdi Chen
doaj   +1 more source

Fréchet algebraic deformation quantization of the Poincaré disk [PDF]

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 2012
Abstract. Starting from formal deformation quantization we use an explicit formula for a star product on the Poincaré disk 𝔻 n
Beiser, Svea, Waldmann, Stefan
openaire   +2 more sources

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