We present what we believe are the first specific string (D-brane) constructions whose low-
energy limit yields just a three generation SU (3)× SU (2)× U (1) standard model with no …

The swampland cobordism conjecture successfully predicts the supersymmetric spectrum of
7-branes of IIB/F-theory. Including reflections on the F-theory torus, it also predicts the …

Recently a class of type IIA orientifold models was constructed yielding just the fermions of
the SM at the intersections of D6-branes wrapping a 6-torus. We generalize that construction …

A bstract Non-trivial K-theory groups and non-trivial cobordism groups can lead to global
symmetries which are conjectured to be absent in quantum gravity. Inspired by open-closed …

Cobordism offers a unique perspective into the non-perturbative sector of string theory by
demanding the absence of higher form global symmetries for quantum gravitational …

The consistency of string theory as a theory of gravity does not rely on the presence of
spacetime supersymmetry; however, its absence leads to the emergence of tadpole …

A bstract We present a string theoretical description, given in terms of branes and
orientifolds wrapping vanishing cycles, of the dual pairs of gauge theories analyzed in [1] …

We elucidate some properties of the relation between two T-dual systems in tori, branes at
angles and branes wrapping the whole torus carrying fluxes. We analyze different features …

The beginning of the previous century was marked by the development of groundbreaking
theories: Quantum Mechanics [1], Special Relativity [2], and General Relativity (GR)[3] …

By implementing an error function on a Machine Learning algorithm we look for minimal
conditions to construct stable Anti de Sitter and de Sitter vacua from dimensional type IIB …