Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Delgado, Matilda"'
Autor:
Delgado, Matilda, van de Heisteeg, Damian, Raman, Sanjay, Torres, Ethan, Vafa, Cumrun, Xu, Kai
We argue that the finiteness of quantum gravity (QG) amplitudes in fully compactified theories (at least in supersymmetric cases) leads to a bottom-up prediction for the existence of non-trivial dualities. In particular, finiteness requires the modul
Externí odkaz:
http://arxiv.org/abs/2412.03640
Autor:
Alestas, George, Delgado, Matilda, Ruiz, Ignacio, Akrami, Yashar, Montero, Miguel, Nesseris, Savvas
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 late-time cosmic acceleration, are in strong tension with string t
Externí odkaz:
http://arxiv.org/abs/2406.09212
Autor:
Delgado, Matilda
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 nothing. We take a first step in studying how this solution transform
Externí odkaz:
http://arxiv.org/abs/2312.09291
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 shown to be fully consistent; although local anomalies cancel due to ve
Externí odkaz:
http://arxiv.org/abs/2310.06895
Publikováno v:
JHEP 01 (2024) 003
The scale at which quantum gravity becomes manifest, the species scale $\Lambda_s$, has recently been argued to take values parametrically lower than the Planck scale. We use black holes of vanishing horizon area (small black holes) in effective fiel
Externí odkaz:
http://arxiv.org/abs/2310.04488
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 $\mathcal{N}=2$ compactifications and capture aspects of the effective field theory near
Externí odkaz:
http://arxiv.org/abs/2212.08676
We describe timelike linear dilaton backgrounds of supercritical string theories as time-dependent Dynamical Cobordisms in string theory, with their spacelike singularity as a boundary defining the beginning of time. We propose and provide compelling
Externí odkaz:
http://arxiv.org/abs/2207.13108
The Cobordism Conjecture states that any Quantum Gravity configuration admits, at topological level, a boundary ending spacetime. We study the dynamical realization of cobordism, as spacetime dependent solutions of Einstein gravity coupled to scalars
Externí odkaz:
http://arxiv.org/abs/2203.11240
We consider spacetime-dependent solutions to string theory models with tadpoles for dynamical fields, arising from non-trivial scalar potentials. The solutions have necessarily finite extent in spacetime, and are capped off by boundaries at a finite
Externí odkaz:
http://arxiv.org/abs/2107.09098
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 extend only a finite distance $\Delta$ away in the spacetime dimensions
Externí odkaz:
http://arxiv.org/abs/2104.02091