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We show that a conformal connection on a closed oriented surface $\Sigma$ of negative Euler characteristic preserves precisely one conformal structure and is furthermore uniquely determined by its unparametrised geodesics. As a corollary it…

Differential Geometry · Mathematics 2015-08-19 Thomas Mettler

We study a modification of Poisson geometry by a closed 3-form. Just as for ordinary Poisson structures, these "twisted" Poisson structures are conveniently described as Dirac structures in suitable Courant algebroids. The additive group of…

Symplectic Geometry · Mathematics 2007-05-23 Pavol Severa , Alan Weinstein

We have adapted classical molecular dynamics to study the structural and dynamical properties of amorphous silica surfaces. Concerning the structure, the density profile exhibits oscillations perpendicularly to the surface as observed in…

Disordered Systems and Neural Networks · Physics 2009-11-07 M. Rarivomanantsoa , P. Jund , R. Jullien

Some positive answers to the problem of endowing a dynamical system with a Hamiltonian formulation are presented within the class of Poisson structures in a geometric framework. We address this problem on orientable manifolds and by using…

We discuss the A-model as a gauge fixing of the Poisson Sigma Model with target a symplectic structure. We complete the discussion in [arXiv:0706.3164], where a gauge fixing defined by a compatible complex structure was introduced, by…

High Energy Physics - Theory · Physics 2016-11-09 Francesco Bonechi , Alberto S. Cattaneo , Riccardo Iraso

We construct a Chern-Simons type of theory using the $l_\infty$ algebra encoded by a Poisson structure on arbitrary Riemann surfaces with boundaries. A deformation quantization within the Batalin-Vilkovisky framework is performed by…

Mathematical Physics · Physics 2020-04-03 Xiaoyi Cui , Chenchang Zhu

We investigate the geometric, algebraic and homologic structures related with Poisson structure on a smooth manifold. Introduce a noncommutative foundations of these structures for a Poisson algebra. Introduce and investigate noncommutative…

Mathematical Physics · Physics 2007-05-23 Zakaria Giunashvili

In work arXiv:1204.2788, a surface embedded in flat $R^3$ is associated to any three hermitian matrices. We study this emergent surface when the matrices are large, by constructing coherent states corresponding to points in the emergent…

High Energy Physics - Theory · Physics 2015-06-30 Mathias Hudoba de Badyn , Joanna L. Karczmarek , Philippe Sabella-Garnier , Ken Huai-Che Yeh

We propose a closed-form normalization method suitable for the study of the secular dynamics of small bodies in heliocentric orbits perturbed by the tidal potential of a planet with orbit external to the orbit of the small body. The method…

Earth and Planetary Astrophysics · Physics 2022-04-06 Irene Cavallari , Christos Efthymiopoulos

The geometric properties of sigma models with target space a Jacobi manifold are investigated. In their basic formulation, these are topological field theories - recently introduced by the authors - which share and generalise relevant…

High Energy Physics - Theory · Physics 2022-10-21 Francesco Bascone , Franco Pezzella , Patrizia Vitale

We solve the topological Poisson Sigma model for a Poisson-Lie group $G$ and its dual $G^*$. We show that the gauge symmetry for each model is given by its dual group that acts by dressing transformations on the target. The resolution of…

High Energy Physics - Theory · Physics 2009-11-10 Ivan Calvo , Fernando Falceto , David Garcia-Alvarez

We investigate the trans-series structure of a quantum mechanical system originating from a Lie-algebraic K\"ahler sigma model with multiple right-handed chiral fermions, extending previous results for the standard onecomplex projective…

High Energy Physics - Theory · Physics 2025-04-15 Chao-Hsiang Sheu

We introduce a new topological sigma model, whose fields are bundle maps from the tangent bundle of a 2-dimensional world-sheet to a Dirac subbundle of an exact Courant algebroid over a target manifold. It generalizes simultaneously the…

High Energy Physics - Theory · Physics 2009-11-10 Alexei Kotov , Peter Schaller , Thomas Strobl

We prove that any holomorphic Poisson manifold has an open symplectic leaf which is a pseudo-K\"ahler submanifold, and we define an obstruction to study the equivariance of momentum map for tangential Poisson action. Some properties of…

Symplectic Geometry · Mathematics 2007-05-23 Qi-Lin Yang

We introduce a new class of Poisson structures on a Riemannian manifold. A Poisson structure in this class will be called a Killing-Poisson structure. The class of Killing-Poisson structures contains the class of symplectic structures, the…

Symplectic Geometry · Mathematics 2007-05-23 M. Boucetta

We investigate a new 8-dimensional Riemannian geometry defined by a generic closed and coclosed 3-form with stabiliser PSU(3), and which arises as a critical point of Hitchin's variational principle. We give a Riemannian characterisation of…

Differential Geometry · Mathematics 2010-12-30 Frederik Witt

An effective sigma model describing behavior of the 3d rigid string with a $\theta$-term at $\theta=\pi$ is proposed. It contains non-perturbative corrections resulting from summation over different genera of the 2d surfaces. The effective…

High Energy Physics - Theory · Physics 2009-10-28 Jacek Pawełczyk

In this paper, we consider both differential and algebraic properties of surfaces associated with sigma models. It is shown that surfaces defined by the generalized Weierstrass formula for immersion for solutions of the CP^{N-1} sigma model…

Mathematical Physics · Physics 2015-06-05 P. P. Goldstein , A. M. Grundland , S. Post

We construct a class of topological field theories with Wess-Zumino term in spacetime dimensions $\ge 2$ whose target space has a geometrical structure that suitably generalizes Poisson or twisted Poisson manifolds. Assuming a field content…

High Energy Physics - Theory · Physics 2021-09-29 Athanasios Chatzistavrakidis

In this note, we gauge the rigid vectorial supersymmetry of the two-dimensional Poisson sigma model presented in arXiv:1503.05625. We show that the consistency of the construction does not impose any further constraints on the differential…

High Energy Physics - Theory · Physics 2015-09-30 Roberto Bonezzi , Per Sundell , Alexander Torres-Gomez