Results 21 to 30 of about 58,877 (128)

Cohomological aspects on complex and symplectic manifolds [PDF]

open access: yes, 2016
We discuss how quantitative cohomological informations could provide qualitative properties on complex and symplectic manifolds. In particular we focus on the Bott-Chern and the Aeppli cohomology groups in both cases, since they represent useful tools in
A. Aeppli   +22 more
core   +2 more sources

Symplectic Foliation Structures of Non-Equilibrium Thermodynamics as Dissipation Model: Application to Metriplectic Nonlinear Lindblad Quantum Master Equation. [PDF]

open access: yesEntropy (Basel), 2022
The idea of a canonical ensemble from Gibbs has been extended by Jean-Marie Souriau for a symplectic manifold where a Lie group has a Hamiltonian action.
Barbaresco F.
europepmc   +2 more sources

Symplectic geometry of entanglement [PDF]

open access: yes, 2010
We present a description of entanglement in composite quantum systems in terms of symplectic geometry. We provide a symplectic characterization of sets of equally entangled states as orbits of group actions in the space of states.
A. Perelomov   +19 more
core   +1 more source

Generating functions in Symplectic Geometry

open access: yesPesquimat, 2019
In this work, we present a brief introduction to Symplectic Geometry relating its origin with the Physics. Then we present the formal definition of symplectic manifold and some important results, with this we consider a function AH;N defined in the ...
Josué Alonso Aguirre Enciso   +1 more
doaj   +1 more source

Virasoro entanglement Berry phases

open access: yesJournal of High Energy Physics, 2022
We study the parallel transport of modular Hamiltonians encoding entanglement properties of a state. In the case of 2d CFT, we consider a change of state through action with a suitable diffeomorphism on the circle: one that diagonalizes the adjoint ...
Jan de Boer   +5 more
doaj   +1 more source

Symplectic Entropy as a Novel Measure for Complex Systems

open access: yesEntropy, 2016
Real systems are often complex, nonlinear, and noisy in various fields, including mathematics, natural science, and social science. We present the symplectic entropy (SymEn) measure as well as an analysis method based on SymEn to estimate the ...
Min Lei   +4 more
doaj   +1 more source

Lie Group Cohomology and (Multi)Symplectic Integrators: New Geometric Tools for Lie Group Machine Learning Based on Souriau Geometric Statistical Mechanics

open access: yesEntropy, 2020
In this paper, we describe and exploit a geometric framework for Gibbs probability densities and the associated concepts in statistical mechanics, which unifies several earlier works on the subject, including Souriau’s symplectic model of statistical ...
Frédéric Barbaresco   +1 more
doaj   +1 more source

Gerbes in Geometry, Field Theory, and Quantisation

open access: yesComplex Manifolds, 2021
This is a mostly self-contained survey article about bundle gerbes and some of their recent applications in geometry, field theory, and quantisation.
Bunk Severin
doaj   +1 more source

Generalised Complex Geometry in Thermodynamical Fluctuation Theory

open access: yesEntropy, 2015
We present a brief overview of some key concepts in the theory of generalized complex manifolds. This new geometry interpolates, so to speak, between symplectic geometry and complex geometry.
P. Fernández de Córdoba, J. M. Isidro
doaj   +1 more source

Lagrangian Submanifolds of Symplectic Structures Induced by Divergence Functions

open access: yesEntropy, 2020
Divergence functions play a relevant role in Information Geometry as they allow for the introduction of a Riemannian metric and a dual connection structure on a finite dimensional manifold of probability distributions.
Marco Favretti
doaj   +1 more source

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