170 citations · 2.2k across the 64 of their papers we have counts for
66 papers
TheoPhysEval: Assessing AI agents at autonomous theoretical physics problem solving
A. Ramesh Chandra, Aaghaz Mahajan, Ainesh Sanyal +32
We present a suite of 50 unpublished research-level theoretical physics problems with verifiable answers. Without AI assistance, a typical problem in our collection could be solved…
Type IIA on Spin(7) manifolds with fluxes
Niccolò Cribiori, Arda Hasar, Thomas Van Riet +1
We initiate a systematic study of compactifications of type II string theory to two dimensions on Ricci-flat spaces with fluxes and sources. We derive universal constraints on such…
A domain wall bound on anti-de Sitter vacua
Niccolò Cribiori, Antonia Paraskevopoulou, Thomas Van Riet
We consider anti-de Sitter flux vacua interpolated by flux-changing domain walls. Demanding that the tension of such a domain wall be above the ultraviolet cutoff of the effective…
A distance conjecture beyond moduli?
Cédric Debusschere, Flavio Tonioni, Thomas Van Riet
The distance conjecture states that for theories with moduli coupled to gravity a tower of states becomes light exponentially in the geodesic distance in moduli space. This specifi…
Stability of Axion-Saxion wormholes
T. Hertog, S. Maenaut, B. Missoni +2
We reconsider the perturbative stability of Euclidean axion wormholes. The quadratic action that governs linear perturbations is derived directly in Euclidean gravity. We demonstra…
The Quantum Theory Of Gravitation, Effective Field Theories, and Strings: Yesterday And Today
Alessio Rocci, Thomas Van Riet
This paper analyzes the effective field theory perspective on modern physics through the lens of the quantum theory of gravitational interaction. The historical part argues that th…
Connecting flux vacua through scalar field excursions
Gary Shiu, Flavio Tonioni, Vincent Van Hemelryck +1
We show how flux vacua that differ from each other in flux quanta can be seen as different vacua in a single scalar potential of an enlarged field space, which resolves the separat…
No accelerating scaling cosmologies at string tree level?
Thomas Van Riet
We investigate the scalar potential of string compactifications in the parametric regime where string loops and higher derivative corrections to 10d supergravity can be ignored and…
Axion-de Sitter wormholes
Sergio E. Aguilar-Gutierrez, Thomas Hertog, Rob Tielemans +2
We construct wormholes supported by axion flux in the presence of a positive cosmological constant. The solutions describe compact, one-handle bodies colloquially known as kettlebe…
Beginners lectures on flux compactifications and related Swampland topics
Thomas Van Riet, Gianluca Zoccarato
These lecture notes provide a pedagogical introduction, with exercises, to the techniques used in attempts to construct vacua with stabilised moduli in string theory. The reader is…
Trustworthy de Sitter compactifications of string theory: a comprehensive review
Iosif Bena, Mariana Graña, Thomas Van Riet
We attempt to review all trustworthy and well-controlled de Sitter compactifications of string theory.
A 10d construction of Euclidean axion wormholes in flat and AdS space
Gregory J. Loges, Gary Shiu, Thomas Van Riet
Euclidean wormhole geometries sourced by axions and dilatons are puzzling objects in quantum gravity. From one side of the wormhole to the other, the scalar fields traverse a few P…
AdS scale separation and the distance conjecture
Gary Shiu, Flavio Tonioni, Vincent Van Hemelryck +1
It has been argued that orientifold vacua with fluxes in type IIA string theory can achieve moduli stabilisation and arbitrary decoupling between the AdS and KK scales upon sending…
Over-extremal brane shells from string theory?
Ulf Danielsson, Vincent Van Hemelryck, Thomas Van Riet
We demonstrate that, if the usual phenomenological compactifications of IIB string theory with warped throats and anti-branes make sense, there must exist spherical brane shells in…
Axion wormholes with massive dilaton
Stefano Andriolo, Gary Shiu, Pablo Soler +1
If Euclidean wormholes contribute meaningfully to the path integral of quantum gravity they can have important implications for particle physics and cosmology. The dominant effects…
Comments on classical AdS flux vacua with scale separation
Fien Apers, Miguel Montero, Thomas Van Riet +1
AdS flux vacua with a parametric separation between the AdS and KK scales have been conjectured to be in the Swampland. We study flux compactifications of massive IIA supergravity…
Instantons and no wormholes in
D. Astesiano, D. Ruggeri, M. Trigiante +1
We study supergravity instantons sourced by axion (and saxion) fields in the Euclidean vacua of IIB supergravity. Such instantons are described by geo…
Scale-separated AdS vacua of IIA orientifolds and M-theory
Niccolò Cribiori, Daniel Junghans, Vincent Van Hemelryck +2
We revisit various aspects of AdS flux vacua with scale separation in type II supergravity and M-theory. We show that massless IIA allows both weakly and strongly coupled solut…
The FL bound and its phenomenological implications
Miguel Montero, Cumrun Vafa, Thomas Van Riet +1
Demanding that charged Nariai black holes in (quasi-)de Sitter space decay without becoming super-extremal implies a lower bound on the masses of charged particles, known as the Fe…
A higher-dimensional view on quantum cosmology
U. H. Danielsson, D. Panizo, R. Tielemans +1
We argue that the choice of boundary condition for the wave function in quantum cosmology depends on the UV completion of general relativity. We provide an explicit example using a…
A comment on no-force conditions for black holes and branes
Thomas Van Riet
In the context of the Weak Gravity Conjecture the notion of quasi-extremality for black holes and branes was recently defined as the property of having either vanishing horizon siz…
A dS obstruction and its phenomenological consequences
Miguel Montero, Thomas Van Riet, Victoria Venken
In this note we observe that positive runaway potentials can generically be stabilized by abelian -form fluxes, leading to parametrically controlled de Sitter solutions after co…
Festina Lente: EFT Constraints from Charged Black Hole Evaporation in de Sitter
Miguel Montero, Thomas Van Riet, Victoria Venken
In the Swampland philosophy of constraining EFTs from black hole mechanics we study charged black hole evaporation in de Sitter space. We establish how the black hole mass and char…
A 10d view on the KKLT AdS vacuum and uplifting
F. F. Gautason, V. Van Hemelryck, T. Van Riet +1
We analyse the ten-dimensional Einstein equations in the KKLT setting. We verify that the quartic gaugino term is needed to remove singularities in the on-shell action as suggested…