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Related papers: Densities of Hyperbolic Cusp Invariants

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We report an upper limit of 9 x 10^{12} cm-2 on the column density of water in the translucent cloud along the line of sight toward HD 154368. This result is based upon a search for the C-X band of water near 1240 \AA carried out using the…

Astrophysics · Physics 2009-10-30 Marco Spaans , David Neufeld , Stephen Lepp , Gary J. Melnick , John Stauffer

We study the statistics of density for supersonic turbulence in a medium with magnetic pressure larger than the gaseous pressure. This study is motivated by molecular cloud research. Our simulations exhibit clumpy density structures, which…

Astrophysics · Physics 2009-11-10 A. Beresnyak , A. Lazarian , J. Cho

Using 3D high-resolution hydrodynamic simulations, tracking both electrons and ions, we study the effects of turbulence and conduction in the hot intracluster medium. We show how the power spectrum of the gas density perturbations can…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 M. Gaspari , E. Churazov

For a nearly integrable Hamiltonian systems $H=h(p)+\epsilon P(p,q)$ with $(p,q)\in\mathbb{R}^3\times\mathbb{T}^3$, large normally hyperbolic invariant cylinders exist along the whole resonant path, except for the…

Dynamical Systems · Mathematics 2015-09-11 Chong-Qing Cheng

This study of properly or strictly convex real projective manifolds introduces notions of parabolic, horosphere and cusp. Results include a Margulis lemma and in the strictly convex case a thick-thin decomposition. Finite volume cusps are…

Geometric Topology · Mathematics 2012-06-06 Daryl Cooper , Darren Long , Stephan Tillmann

Yokota suggested an optimistic limit method of the Kashaev invariants of hyperbolic knots and showed it determines the complex volumes of the knots. His method is very effective and gives almost combinatorial method of calculating the…

Geometric Topology · Mathematics 2014-09-03 Jinseok Cho , Hyuk Kim , Seonhwa Kim

We prove that in various natural models of a random quotient of a group, depending on a density parameter, for each hyperbolic group there is some critical density under which a random quotient is still hyperbolic with high probability,…

Group Theory · Mathematics 2007-05-23 Yann Ollivier

By work of W. Thurston, knots and links in the 3-sphere are known to either be torus links, or to contain an essential torus in their complement, or to be hyperbolic, in which case a unique hyperbolic volume can be calculated for their…

Geometric Topology · Mathematics 2022-01-05 Colin Adams , Or Eisenberg , Jonah Greenberg , Kabir Kapoor , Zhen Liang , Kate O'Connor , Natalia Pacheco-Tallaj , Yi Wang

We analyze the orbifolds that can be obtained as quotients of hyperbolic 3-manifolds admitting a Heegaard splitting of genus two by their orientation preserving isometry groups. The genus two hyperbolic 3-manifolds are exactly the…

Geometric Topology · Mathematics 2014-11-05 Annalisa Bruno , Mattia Mecchia

The density of the Bose-Einstein condensate for non-interacting pions in a cubic box, at given temperature and (average) total pion density, is calculaated for three sets of boundary conditions. The densities are much larger than predicted…

High Energy Physics - Phenomenology · Physics 2017-09-28 Kacper Zalewski

Spectral density in the pseudoscalar and vector channels is extracted from the SU(2) lattice quenched data. It is shown to consist of three sharp poles within the energy range accessible on the lattice.

High Energy Physics - Lattice · Physics 2009-10-28 D. Makovoz , G. A. Miller

McReynolds showed that every compact Nil 3-manifold occurs as the cusp cross-section of some arithmetic complex hyperbolic 2-manifold. We classify which commensurability classes of cusped, arithmetic, complex hyperbolic 2-manifolds admit…

Geometric Topology · Mathematics 2024-11-28 Julien Paupert , Connor Sell

We investigate several conjectures in geometric topology by assembling computer data obtained by studying weaving knots, a doubly infinite family $W(p,n)$ of examples of hyperbolic knots. In particular, we compute some important polynomial…

Geometric Topology · Mathematics 2019-05-09 Rama Mishra , Ross Staffeldt

In a recently published article by G. Ambrus et al. a new \emph{upper bound} for the density of an unit avoiding, periodic set is given as $0.2470$, the first upper bound $< 1/4$. A construction of Croft 1967 gave a \emph{lower bound}…

Metric Geometry · Mathematics 2025-06-19 Helmut Ruhland

We give an expository account of our proof that each cusp-free hyperbolic 3-manifold M with finitely generated fundamental group and incompressible ends is an algebraic limit of geometrically finite hyperbolic 3-manifolds.

Geometric Topology · Mathematics 2007-05-23 Jeffrey F. Brock , Kenneth W. Bromberg

It was conjectured by Lopez that every closed irreducible non-Haken 3-manifold contains a small knot. In this paper, we give explicit examples of hyperbolic small knots in most closed orientable spherical 3-manifolds other than prism…

Geometric Topology · Mathematics 2025-06-03 Kazuhiro Ichihara

Aim of this article is the construction of a spanning set for the space of super cusp forms on a complex bounded symmetric super domain B of rank 1 with respect to a lattice. The main ingredients are a generalization of the Anosov closing…

Complex Variables · Mathematics 2009-09-08 Roland Knevel

The superfluid properties of attractive Hubbard model in dice lattice are investigated. It is found that three superfluid order parameters increase as the interaction increases. When the filling factor falls into the flat band, due to the…

Quantum Gases · Physics 2022-06-10 Yu-Rong Wu , Xiao-Fei Zhang , Chao-Fei Liu , Wu-Ming Liu , Yi-Cai Zhang

The Volume conjecture claims that the hyperbolic Volume of a knot is determined by the colored Jones polynomial. The purpose of this article is to show a Volume-ish theorem for alternating knots in terms of the Jones polynomial, rather than…

Geometric Topology · Mathematics 2010-07-27 Oliver Dasbach , Xiao-Song Lin

In 1978, W. Thurston revolutionized low diemsional topology with his work on hyperbolic 3-manifolds. In this paper, we discuss what is currently known about knots in the 3-sphere with hyperbolic complements. Then focus is on geometric…

Geometric Topology · Mathematics 2009-09-29 Colin Adams