Low-frequency divergence and quantum geometry of the bulk photovoltaic effect in topological semimetals

J Ahn, GY Guo, N Nagaosa - Physical Review X, 2020 - APS
We study the low-frequency properties of the bulk photovoltaic effect in topological
semimetals. The bulk photovoltaic effect is a nonlinear optical effect that generates dc …

[HTML][HTML] On Darboux theorems for geometric structures induced by closed forms

X Gràcia, J de Lucas, X Rivas… - Revista de la Real …, 2024 - Springer
This work reviews the classical Darboux theorem for symplectic, presymplectic, and
cosymplectic manifolds (which are used to describe mechanical systems), as well as certain …

Covariant and equivariant formality theorems

V Dolgushev - Advances in Mathematics, 2005 - Elsevier
We give a proof of Kontsevich's formality theorem for a general manifold using Fedosov
resolutions of algebras of polydifferential operators and polyvector fields. The main …

Symplectic connections

P Bieliavsky, M Cahen, S Gutt, J Rawnsley… - … Journal of Geometric …, 2006 - World Scientific
This article is an overview of the results obtained in recent years on symplectic connections.
We present what is known about preferred connections (critical points of a variational …

[图书][B] Introduction to symplectic Dirac operators

K Habermann, L Habermann - 2006 - books.google.com
One of the basic ideas in differential geometry is that the study of analytic properties of
certain differential operators acting on sections of vector bundles yields geometric and …

[图书][B] Geometric and algebraic topological methods in quantum mechanics

G Giachetta, L Mangiarotti, GA Sardanashvili - 2005 - books.google.com
In the last decade, the development of new ideas in quantum theory, including geometric
and deformation quantization, the non-Abelian Berry''s geometric factor, super-and BRST …

Interaction of Codazzi couplings with (para-) Kähler geometry

T Fei, J Zhang - Results in Mathematics, 2017 - Springer
We study Codazzi couplings of an affine connection ∇∇ with a pseudo-Riemannian metric
g, a nondegenerate 2-form ω ω, and a tangent bundle isomorphism L on smooth manifolds …

[HTML][HTML] The geometry of a bi-Lagrangian manifold

F Etayo, R Santamaría, UR Trías - Differential Geometry and its Applications, 2006 - Elsevier
This is a survey on bi-Lagrangian manifolds, which are symplectic manifolds endowed with
two transversal Lagrangian foliations. We also study the non-integrable case (ie, a …

A deformation quantization for non-flat spacetimes and applications to QFT

A Much - Journal of Physics A: Mathematical and …, 2024 - pubishingsupport.iopscience.iop.org
We provide a deformation quantization, in the sense of Rieffel, for all globally hyperbolic
spacetimes with a Poisson structure. The Poisson structures have to satisfy Fedosov type …

Semiclassical differential structures

E Beggs, S Majid - Pacific journal of mathematics, 2006 - msp.org
We semiclassicalise the standard notion of differential calculus in noncommutative geometry
on algebras and quantum groups. We show in the symplectic case that the infinitesimal data …