ON THE GEOMETRY OF LOCALLY CONFORMAL SYMPLECTIC MANIFOLDS

Author(s):  
A. BANYAGA
Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1205
Author(s):  
Francesco Bascone ◽  
Franco Pezzella ◽  
Patrizia Vitale

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 features of Poisson sigma models, such as gauge invariance under diffeomorphisms and finite dimension of the reduced phase space. After reviewing the main novelties and peculiarities of these models, we perform a detailed analysis of constraints and ensuing gauge symmetries in the Hamiltonian approach. Contact manifolds as well as locally conformal symplectic manifolds are discussed, as main instances of Jacobi manifolds.


2008 ◽  
Vol 07 (06) ◽  
pp. 749-772 ◽  
Author(s):  
EUGÈNE OKASSA

We show that Jacobi algebras (Poisson algebras respectively) can be defined only as Lie–Rinehart–Jacobi algebras (as Lie–Rinehart–Poisson algebras respectively). Also we show that contact manifolds, locally conformal symplectic manifolds (symplectic manifolds respectively) can be defined only as symplectic Lie–Rinehart–Jacobi algebras (only as symplectic Lie–Rinehart–Poisson algebras respectively). We define symplectic Lie algebroids.


2018 ◽  
Vol 143 ◽  
pp. 1-57 ◽  
Author(s):  
Giovanni Bazzoni ◽  
Juan Carlos Marrero

2015 ◽  
Vol 19 (1) ◽  
pp. 45-82 ◽  
Author(s):  
Hông Vân Lê ◽  
Jiri Vanžura

2017 ◽  
Vol 4 (1) ◽  
pp. 172-178
Author(s):  
Giovanni Bazzoni ◽  
Juan Carlos Marrero

Abstract We report on a question, posed by L. Ornea and M. Verbitsky in [32], about examples of compact locally conformal symplectic manifolds without locally conformal Kähler metrics. We construct such an example on a compact 4-dimensional nilmanifold, not the product of a compact 3-manifold and a circle.


2001 ◽  
Vol 37 (3) ◽  
pp. 262-271 ◽  
Author(s):  
Stefan Haller ◽  
Tomasz Rybicki

Filomat ◽  
2017 ◽  
Vol 31 (20) ◽  
pp. 6449-6459 ◽  
Author(s):  
Akram Ali ◽  
Siraj Uddin ◽  
Wan Othman ◽  
Cenap Ozel

In this paper, we establish some optimal inequalities for the squared mean curvature in terms warping functions of a C-totally real doubly warped product submanifold of a locally conformal almost cosymplectic manifold with a pointwise ?-sectional curvature c. The equality case in the statement of inequalities is also considered. Moreover, some applications of obtained results are derived.


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