Results 1 to 10 of about 18,699 (193)

From infinity to four dimensions: higher residue pairings and Feynman integrals

open access: yesJournal of High Energy Physics, 2020
We study a surprising phenomenon in which Feynman integrals in D = 4 − 2ε space-time dimensions as ε → 0 can be fully characterized by their behavior in the opposite limit, ε → ∞.
Sebastian Mizera, Andrzej Pokraka
doaj   +1 more source

Quadratic algebras related to elliptic curves [PDF]

open access: yes, 2007
We construct quadratic finite-dimensional Poisson algebras and their quantum versions related to rank N and degree one vector bundles over elliptic curves with n marked points. The algebras are parameterized by the moduli of curves.
Chernyakov, Yu.   +3 more
core   +2 more sources

On automorphisms of moduli spaces of parabolic vector bundles [PDF]

open access: yes, 2019
Fix $n\geq 5$ general points $p_1, \dots, p_n\in\mathbb{P}^1$, and a weight vector $\mathcal{A} = (a_{1}, \dots, a_{n})$ of real numbers $0 \leq a_{i} \leq 1$.
Araujo, Carolina   +3 more
core   +2 more sources

Moduli spaces of sheaves on K3 surfaces [PDF]

open access: yes, 2016
In this survey article we describe moduli spaces of simple, stable, and semistable sheaves on K3 surfaces, following the work of Mukai, O'Grady, Huybrechts, Yoshioka, and others.
Sawon, Justin
core   +3 more sources

Revisiting the moduli space of semistable G-bundles over elliptic curves [PDF]

open access: yes, 2020
We show that the moduli space of semistable G-bundles on an elliptic curve for a reductive group G is isomorphic to a power of the elliptic curve modulo a certain Weyl group which depend on the topological type of the bundle. This generalises a result of
Frăţilă, Dragoş
core   +5 more sources

Quasi-modular forms attached to elliptic curves, I [PDF]

open access: yes, 2011
In the present text we give a geometric interpretation of quasi-modular forms using moduli of elliptic curves with marked elements in their de Rham cohomologies.
Movasati, Hossein
core   +2 more sources

Bundles of generalized theta functions over abelian surfaces [PDF]

open access: yes, 2016
We study the bundles of generalized theta functions constructed from moduli spaces of sheaves over abelian surfaces. In degree 0, the splitting type of these bundles is expressed in terms of indecomposable semihomogeneous factors.
Oprea, Dragos
core   +1 more source

Birational geometry of the moduli space of rank 2 parabolic vector bundles on a rational curve [PDF]

open access: yes, 2015
We investigate the birational geometry (in the sense of Mori's program) of the moduli space of rank 2 semistable parabolic vector bundles on a rational curve.
Moon, Han-Bom, Yoo, Sang-Bum
core   +1 more source

Geometric constraints in dual F-theory and heterotic string compactifications [PDF]

open access: yes, 2014
We systematically analyze a broad class of dual heterotic and F-theory models that give four-dimensional supergravity theories, and compare the geometric constraints on the two sides of the duality.
Anderson, Lara B., Taylor, Washington
core   +5 more sources

P^r-scrolls arising from Brill-Noether theory and K3-surfaces

open access: yes, 2010
In this paper we study examples of P^r-scrolls defined over primitively polarized K3 surfaces S of genus g, which arise from Brill-Noether theory of the general curve in the primitive linear system on S and from classical Lazarsfeld's results in.
Flamini, Flaminio
core   +1 more source

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