6 citations · 10 across the 10 of their papers we have counts for
14 papers
Scale-separated AdS vacua on Riemann-Flat Manifolds
Miquel Aparici, Ivano Basile, Bruno Valeixo Bento +1
Supergravity compactifications supported by fluxes and Casimir energy offer a simple strategy to concoct explicit, controlled and isolated vacua with parametric scale separation an…
A maximum in M-theory from Casimir energies on Riemann-flat manifolds
Miquel Aparici, Bruno Valeixo Bento, Miguel Montero
We describe a fully explicit, four-dimensional, top-down de Sitter saddle, constructed via compactification of M-theory on the Riemann-flat manifold . The solutio…
CasimirRFM: A Mathematica package for Riemann-flat compactifications with Casimir energies
Bruno Valeixo Bento
CasimirRFM is a Mathematica package for the study of compactifications on Riemann-flat manifolds and the computation of one-loop Casimir energies in higher-dimensional field theori…
Constraining strongly-warped extra dimensions with rotating black holes
Bruno Valeixo Bento, Miquel Salicrú Herberg
Massive bosonic fields can trigger superradiant instabilities in rotating astrophysical black holes leading to gaps in their mass-spin distribution. For spin-2 fields, the instabil…
de Sitter no-go's for Riemann-flat manifolds and a link to semidefinite optimisation
Bruno Valeixo Bento, Miguel Montero
We establish a no-go theorem in the context of string and M-theory flux compactifications on Riemann-Flat manifolds with Casimir energy. Specifically, we show that no dS minimum ex…
An M-theory dS maximum from Casimir energies on Riemann-flat manifolds
Bruno Valeixo Bento, Miguel Montero
We initiate the study of flux compactifications on non-supersymmetric Riemann-flat manifolds (RFM's) with Casimir energy. While curvature and other corrections are suppressed in RF…
EFT & Species Scale: Friends or foes?
Bruno Valeixo Bento, João F. Melo
Recently the notion that quantum gravity effects could manifest at scales much lower than the Planck scale has seen an intense Swamplandish revival. Dozens of works have explored h…
De Sitter vacua -- when are `subleading corrections' really subleading?
Bruno Valeixo Bento, Dibya Chakraborty, Susha Parameswaran +1
We consider various string-loop, warping and curvature corrections that are expected to appear in type IIB moduli stabilisation scenarios. It has recently been argued, in the conte…
A guide to frames, 's, scales and corrections in string compactifications
Bruno Valeixo Bento, Dibya Chakraborty, Susha Parameswaran +1
This note is intended to serve as a reference for conventions used in the literature on string compactifications, and how to move between them, collected in a single and easy-to-fi…
Gravity at the Tip of the Throat
Bruno Valeixo Bento, Dibya Chakraborty, Susha Parameswaran +1
We study the gravitational signatures that arise from compactifying Type IIB supergravity on a compact space containing a Klebanov-Strassler warped throat. After reviewing the dime…
If time had no beginning
Bruno Valeixo Bento, Stav Zalel
General Relativity traces the evolution of our Universe back to a Big Bang singularity. To probe physics before the singularity -- if indeed there is a ``before'' -- we must turn t…
If time had no beginning: growth dynamics for past-infinite causal sets
Bruno Valeixo Bento, Fay Dowker, Stav Zalel
We explore whether the growth dynamics paradigm of Causal Set Theory is compatible with past-infinite causal sets. We modify the Classical Sequential Growth dynamics of Rideout and…
A New de Sitter Solution with a Weakly Warped Deformed Conifold
Bruno Valeixo Bento, Dibya Chakraborty, Susha L. Parameswaran +1
We revisit moduli stabilisation for type IIB flux compactifications that include a warped throat region corresponding to a warped deformed conifold, with an anti-D3-brane sitting a…
Dark Energy in String Theory
Bruno Valeixo Bento, Dibya Chakraborty, Susha L. Parameswaran +1
We consider various candidates for Dark Energy, motivated by string theory. Several no-go theorems push de Sitter string vacua, with , to the limits of theoretical control, a…