44 citations · 165 across the 13 of their papers we have counts for
14 papers
What makes spacetime spin in string theory?
Matilda Delgado, Lorenz Eberhardt, Marija Tomašević
Type II string theory in the absence of orientifolds requires the target spacetime to admit a spin structure. We show that this familiar requirement arises directly from the co…
A Duality Web for Non-Supersymmetric Strings
Zihni Kaan Baykara, Matilda Delgado, Emilian Dudas +2
Motivated by the recently proposed geometric descriptions of 0A and 0B in M-theory and F-theory, we propose a web of duality among non-supersymmetric strings. In particular we argu…
Black Holes, Moduli Stabilisation and the Swampland
Matilda Delgado, Sébastien Reymond, Thomas Van Riet
In theories with moduli, extremal black holes behave such that for generic initial conditions, the distance traveled by the scalars from infinity to the horizon can grow with the s…
Classical Black Hole Probes of UV Scales
José Calderón-Infante, Matilda Delgado, Yixuan Li +2
In the context of the Swampland program, black hole attractors have been employed to probe infinite distances in moduli space, where the EFT cutoff goes to zero in Planck units and…
Finiteness and the Emergence of Dualities
Matilda Delgado, Damian van de Heisteeg, Sanjay Raman +3
We argue that the finiteness of quantum gravity amplitudes in fully compactified theories (at least in supersymmetric cases) leads to a bottom-up prediction for the existence of no…
To curve, or not to curve: Is curvature-assisted quintessence observationally viable?
George Alestas, Matilda Delgado, Ignacio Ruiz +3
Single-field models of accelerated expansion with nearly flat potentials, despite being able to provide observationally viable explanations for the early-time cosmic inflation and…
The Bubble of Nothing under T-duality
Matilda Delgado
The bubble of nothing is a solution to Einstein's equations where a circle shrinks and pinches off smoothly. As such, it is one of the simplest examples of a dynamical cobordism to…
Global anomalies & bordism of non-supersymmetric strings
Ivano Basile, Arun Debray, Matilda Delgado +1
The three tachyon-free non-supersymmetric string theories in ten dimensions provide a handle on quantum gravity away from the supersymmetric lamppost. However, they have not been s…
Emergence of Species Scale Black Hole Horizons
José Calderón-Infante, Matilda Delgado, Angel M. Uranga
The scale at which quantum gravity becomes manifest, the species scale , has recently been argued to take values parametrically lower than the Planck scale. We use black holes…
Black Holes as Probes of Moduli Space Geometry
Matilda Delgado, Miguel Montero, Cumrun Vafa
We argue that supersymmetric BPS states can act as efficient finite energy probes of the moduli space geometry thanks to the attractor mechanism. We focus on 4d com…
Dynamical Cobordism and the Beginning of Time: Supercritical Strings and Tachyon Condensation
Roberta Angius, Matilda Delgado, Angel M. Uranga
We describe timelike linear dilaton backgrounds of supercritical string theories as time-dependent Dynamical Cobordisms in string theory, with their spacelike singularity as a boun…
At the End of the World: Local Dynamical Cobordism
Roberta Angius, José Calderón-Infante, Matilda Delgado +2
The Cobordism Conjecture states that any Quantum Gravity configuration admits, at topological level, a boundary ending spacetime. We study the dynamical realization of cobordism, a…
Dynamical Cobordism and Swampland Distance Conjectures
Ginevra Buratti, José Calderón-Infante, Matilda Delgado +1
We consider spacetime-dependent solutions to string theory models with tadpoles for dynamical fields, arising from non-trivial scalar potentials. The solutions have necessarily fin…
Dynamical Tadpoles, Stringy Cobordism, and the SM from Spontaneous Compactification
Ginevra Buratti, Matilda Delgado, Angel M. Uranga
We consider string theory vacua with tadpoles for dynamical fields and uncover universal features of the resulting spacetime-dependent solutions. We argue that the solutions can ex…