RUS  ENG
Full version
JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 2021 Volume 212, Number 11, Pages 3–54 (Mi sm9490)

This article is cited in 6 papers

New moduli components of rank 2 bundles on projective space

C. Almeidaa, M. Jardimb, A. S. Tikhomirovc, S. A. Tikhomirovd

a Department of Mathematics, Federal University of Minas Gerais, Belo Horizonte, Brazil
b Department of Mathematics, Institute of Mathematics, Statistics and Scientific Computing, Campinas, Brazil
c Faculty of Mathematics, National Research University Higher School of Economics, Moscow, Russia
d Faculty of Physics and Mathematics, Yaroslavl State Pedagogical University named after K. D. Ushinsky, Yaroslavl, Russia

Abstract: We present a new family of monads whose cohomology is a stable rank 2 vector bundle on $\mathbb{P}^3$. We also study the irreducibility and smoothness together with a geometrical description of some of these families. These facts are used to construct a new infinite series of rational moduli components of stable rank 2 vector bundles with trivial determinant and growing second Chern class. We also prove that the moduli space of stable rank 2 vector bundles with trivial determinant and second Chern class equal to 5 has exactly three irreducible rational components.
Bibliography: 40 titles.

Keywords: rank 2 bundles, monads, instanton bundles.

UDC: 512.723

MSC: 14D20, 14J60

Received: 11.08.2020 and 10.07.2021

DOI: 10.4213/sm9490


 English version:
Sbornik: Mathematics, 2021, 212:11, 1503–1552

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2024