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Working over imperfect fields, we give a comprehensive classification of genus-one curves that are regular but not geometrically regular, extending the known case of geometrically reduced curves. The description is given intrinsically, in…

Algebraic Geometry · Mathematics 2022-11-09 Stefan Schröer

We construct highly singular projective curves and surfaces defined by invariants of primitive complex reflection groups.

Algebraic Geometry · Mathematics 2018-11-13 Cédric Bonnafé

Future quantum computers will enable novel sign-problem-free studies of dynamical phenomena in non-perturbative quantum field theories, including real-time evolution and spontaneous supersymmetry breaking. We are investigating applications…

High Energy Physics - Lattice · Physics 2023-01-06 Christopher Culver , David Schaich

The asymptotic expansion of quantum knot invariants in complex Chern-Simons theory gives rise to factorially divergent formal power series. We conjecture that these series are resurgent functions whose Stokes automorphism is given by a pair…

High Energy Physics - Theory · Physics 2021-06-30 Stavros Garoufalidis , Jie Gu , Marcos Marino

The quantum cohomology algebra of a projective manifold X is the cohomology H(X,Q) endowed with a different algebra structure, which takes into account the geometry of rational curves in X. We show that this algebra takes a remarkably…

alg-geom · Mathematics 2015-06-30 Arnaud Beauville

In this paper a construction of quantum codes from self-orthogonal algebraic geometry codes is provided. Our method is based on the CSS construction as well as on some peculiar properties of the underlying algebraic curves, named Swiss…

Algebraic Geometry · Mathematics 2019-12-18 Daniele Bartoli , Maria Montanucci , Giovanni Zini

We prove two results about vector bundles on singular algebraic surfaces. First, on proper surfaces there are vector bundles of rank two with arbitrarily large second Chern number and fixed determinant. Second, on separated normal surfaces…

Algebraic Geometry · Mathematics 2007-05-23 Stefan Schroeer , Gabriele Vezzosi

$q,t$-deformed matrix models give rise to representations of the deformed Virasoro algebra and more generally of the quantum toroidal $\mathfrak{gl}_1$ algebra. These representations are described in terms of finite difference equations…

Mathematical Physics · Physics 2025-10-21 Luca Cassia , Victor Mishnyakov

For applications of group theory in quantum mechanics, one generally needs explicit matrix representations of the spectrum generating algebras that arise in bases that reduce the symmetry group of some Hamiltonian of interest. Here we use…

Mathematical Physics · Physics 2009-11-11 P. S. Turner , D. J. Rowe , J. Repka

Quantum splines are curves in a Hilbert space or, equivalently, in the corresponding Hilbert projective space, which generalize the notion of Riemannian cubic splines to the quantum domain. In this paper, we present a generalization of this…

Mathematical Physics · Physics 2018-11-21 L. Abrunheiro , M. Camarinha , J. Clemente-Gallardo , J. C. Cuchí , P. Santos

This is a survey article describing the relationship between quantum curves and topological recursion. A quantum curve is a Schr\"odinger operator-like noncommutative analogue of a plane curve which encodes (quantum) enumerative invariants…

Mathematical Physics · Physics 2015-02-17 Paul Norbury

To any complex Hadamard matrix we associate a quantum permutation group. The correspondence is not one-to-one, but the quantum group encapsulates a number of subtle properties of the matrix. We investigate various aspects of the…

Operator Algebras · Mathematics 2007-05-23 Teodor Banica , Remus Nicoara

For the family of the orthogonal quantum matrix algebras we investigate the structure of their characteristic subalgebras -- special commutative subalgebras, which for the subfamily of the reflection equation algebras appear to be central.…

Quantum Algebra · Mathematics 2025-10-14 Pavel Pyatov , Oleg Ogievetsky

There is a decomposition of a Lie algebra for open matrix chains akin to the triangular decomposition. We use this decomposition to construct unitary irreducible representations. All multiple meson states can be retrieved this way.…

Mathematical Physics · Physics 2015-06-26 H. P. Jakobsen , C. -W. H. Lee

In this paper, we add the information of level structure to supersingular elliptic curves and study these objects with the motivation of isogeny-based cryptography. Supersingular elliptic curves with level structure map to Eichler orders in…

Number Theory · Mathematics 2025-01-13 Sarah Arpin

Quantum trajectory theory, developed largely in the quantum optics community to describe open quantum systems subjected to continuous monitoring, has applications in many areas of quantum physics. In this paper I present a simple model,…

Quantum Physics · Physics 2009-11-07 Todd A. Brun

We study singular Hermitian metrics on vector bundles. There are two main results in this paper. The first one is on the coherence of the higher rank analogue of multiplier ideals for singular Hermitian metrics defined by global sections.…

Complex Variables · Mathematics 2017-02-08 Genki Hosono

We study direct limits of embedded Cantor sets and embedded \sier curves. We show that under appropriate conditions on the embeddings, all limits of Cantor spaces give rise to homeomorphic spaces, called $\omega$-Cantor spaces, and…

Geometric Topology · Mathematics 2020-09-21 Ruth Charney , Matthew Cordes , Alessandro Sisto

In this paper, we construct the Heisenberg-Virasoro algebra in the framework of the $\mathcal{R}(p,q)$-deformed quantum algebras. Moreover, the $\mathcal{R}(p,q)$-Heisenberg-Witt $n$-algebras is also investigated. Furthermore, we generalize…

Quantum Algebra · Mathematics 2023-08-02 Fridolin Melong , Raimar Wulkenhaar

Generalizations of symplectic and metric structures for supermanifolds are analyzed. Two types of structures are possible according to the even/odd character of the corresponding quadratic tensors. In the even case one has a very rich set…

High Energy Physics - Theory · Physics 2009-02-10 M. Asorey , P. M. Lavrov