K-theory and phase transitions at high energies
arXiv:1604.05447 · doi:10.15673/tmgc.v9i1.87
Abstract
The duality between heteritic string on manifold and Type IIA string compactified on a Calabi-Yau manifold induces a correspondence between vector bundles on and Calabi-Yau manifolds. Vector bundles over compact base space form the set of isomorphism classes, which is a semi-ring under the operation of Whitney sum and tensor product. The construction of semi-ring of isomorphism classes of complex vector bundles over X leads to the ring , called Grothendieck group. As K3 has no isometries and no non-trivial one-cycles, so vector bundle winding modes arise from the compactification. Since we have focused on supergravity in d=11, there exist solutions in d=10 for which space-time is Minkowski space and extra dimensions are . The complete set of soliton solutions of supergravity theory is characterized by RR charges, identified by K-theory. Toric presentation of Calabi-Yau through Batyrev's toric approximation enables us to connect transitions between Calabi-Yau manifolds, classified by enhanced symmetry group, with K-theory classification.
8 pages, presented for International conference "Geometry in Odessa 2016"