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We show that the cardinality of the transverse intersection of two compact exact Lagrangian submanifolds in a cotangent bundle is bounded from below by the dimension of the Hom space of sheaf quantizations of the Lagrangians in Tamarkin's…

Symplectic Geometry · Mathematics 2023-07-21 Yuichi Ike

We study exact Lagrangian cobordisms between exact Lagrangians in a cotangent bundle in the sense of Arnol'd, using microlocal theory of sheaves. We construct a sheaf quantization for an exact Lagrangian cobordism between Lagrangians with…

Symplectic Geometry · Mathematics 2025-04-22 Tomohiro Asano , Yuichi Ike , Wenyuan Li

Let $L$ be an exact Lagrangian submanifold of a cotangent bundle $T^* M$, asymptotic to a Legendrian submanifold $\Lambda \subset T^{\infty} M$. We study a locally constant sheaf of $\infty$-categories on $L$, called the sheaf of brane…

Symplectic Geometry · Mathematics 2024-06-05 Xin Jin , David Treumann

We apply the technique of formal geometry to give a necessary and sufficient condition for a line bundle supported on a smooth Lagrangian subvariety to deform to a sheaf of modules over a fixed deformation quantization of the structure…

Algebraic Geometry · Mathematics 2015-02-19 Vladimir Baranovsky , Victor Ginzburg , Dmitry Kaledin , Jeremy Pecharich

A sheaf quantization is a sheaf associated to a Lagrangian brane. By using the results of exact WKB analysis, we sheaf-quantize spectral curves over the Novikov ring under some assumptions on the behavior of Stokes curves. For Schr\"odinger…

Symplectic Geometry · Mathematics 2024-05-24 Tatsuki Kuwagaki

In this thesis we use the language of sheaf theory in order to develop a deeper understanding of some of the fundamental differences - such as entanglement, contextuality and non-locality - between quantum and classical physics. We first…

Quantum Physics · Physics 2015-10-12 Carmen Maria Constantin

The main purpose of this paper is to define the {\it net logarithmic tangent sheaf}, as a generalization of the logarithmic tangent sheaf introduced by P.~Deligne, over the field of complex numbers, and prove some basic properties and give…

Algebraic Geometry · Mathematics 2025-04-22 Sukmoon Huh , Min-gyo Jeong

We give a conjectural formula for sheaves supported on (irreducible) conormal varieties inside the cotangent bundle of the Grassmannian, such that their equivariant $K$-class is given by the partition function of an integrable loop model,…

Algebraic Geometry · Mathematics 2016-12-15 A. Knutson , P. Zinn-Justin

In this paper, we use derived sheaves to study rigidity phenomena in the cotangent bundles of manifolds endowed with some locally conformally symplectic ($\frak{lcs}$) structure. Taking inspiration from the work of Guillermou, Kashiwara and…

Symplectic Geometry · Mathematics 2026-05-26 Adrien Currier

Let $\{\Lambda^\infty_t\}$ be an isotopy of Legendrians (possibly singular) in a unit cosphere bundle $S^*M$. Let $Sh(M, \Lambda^\infty_t)$ be the differential graded (dg) derived category of constructible sheaves on $M$ with singular…

Symplectic Geometry · Mathematics 2018-10-31 Peng Zhou

Under certain assumptions (such as weak exacteness or monotonicity) we show that splitting Lagrangians through cobordism has an energy cost and, from this cost being smaller than certain explicit bounds, we deduce some strong forms of…

Symplectic Geometry · Mathematics 2018-06-19 Paul Biran , Octav Cornea , Egor Shelukhin

Let the vector bundle $\mathcal{E}$ be a deformation of the tangent bundle over the Grassmannian $G(k,n)$. We compute the ring structure of sheaf cohomology valued in exterior powers of $\mathcal{E}$, also known as the polymology. This is…

Algebraic Geometry · Mathematics 2017-08-04 Jirui Guo , Zhentao Lu , Eric Sharpe

We introduce the semi-infinite category of sheaves on the affine Grassmannian, and construct a particular object in it, which we call the the semi-infinite intersection cohomology sheaf. We relate it to several other entities naturally…

Algebraic Geometry · Mathematics 2021-11-02 Dennis Gaitsgory

Let Y be a compact reduced subspace of a complex manifold X, and let F be a subsheaf of the tangent bundle T_X which is closed under the Lie bracket. This paper discusses criteria to guarantee that infinitesimal deformations of the…

Algebraic Geometry · Mathematics 2011-03-30 Clemens Jörder , Stefan Kebekus

Given a compact Lagrangian $L$ in a semipositive convex-at-infinity symplectic manifold $W$, we establish a cup-length estimate for the action values of $L$ associated to a Hamiltonian isotopy whose spectral norm is smaller than some…

Symplectic Geometry · Mathematics 2023-12-25 Habib Alizadeh , Marcelo S. Atallah , Dylan Cant

Using the microlocal theory of sheaves, we associate a category to each Weinstein manifold. By constructing a microlocal specialization functor, we show that exact Lagrangians give objects in our category, and that the category is invariant…

Symplectic Geometry · Mathematics 2023-01-03 David Nadler , Vivek Shende

We find lower bounds on the number of intersection points between two relatively exact Hamiltonian isotopic Lagrangians. The bounds are given in terms of the cuplength of the Lagrangian in various multiplicative generalised cohomology…

Symplectic Geometry · Mathematics 2024-05-01 Amanda Hirschi , Noah Porcelli

We develop sheaf-theoretic methods to deal with non-smooth objects in symplectic geometry. We show the completeness of a derived category of sheaves with respect to the interleaving distance and construct a sheaf quantization of a…

Symplectic Geometry · Mathematics 2024-03-14 Tomohiro Asano , Yuichi Ike

In this paper, we define a family of categories for each Liouville manifold, which is an enhanced version of the category first introduced by Tamarkin. Using our categories, for any (possibly non-exact immersed) Lagrangian brane, we develop…

Symplectic Geometry · Mathematics 2024-06-13 Yuichi Ike , Tatsuki Kuwagaki

Dynamics of a one-dimensional system of Brownian particles with short-range repulsive interaction (diameter sigma) is studied with a liquid-theoretical approach. The mean square displacement, the two-particle displacement correlation, and…

Statistical Mechanics · Physics 2013-12-06 T. Ooshida , S. Goto , T. Matsumoto , A. Nakahara , M. Otsuki
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