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We conjecture that in a consistent supergravity theory with non-vanishing gravitino mass, the limit $m_{3/2}\rightarrow 0$ is at infinite distance. In particular one can write $M_{\mathrm{tower}} \sim m_{3/2}^\delta$ so that as the…

High Energy Physics - Theory · Physics 2021-09-15 Alberto Castellano , Anamaría Font , Alvaro Herraez , Luis E. Ibáñez

Castellano, Ruiz, and Valenzuela recently observed a remarkable "pattern" in infinite-distance limits of moduli spaces in quantum gravity, which relates the field space variation of the mass of the lightest tower of particles to the field…

High Energy Physics - Theory · Physics 2023-12-04 Tom Rudelius

We consider quintessence models within 4D effective descriptions of gravity coupled to two scalar fields. These theories are known to give rise to viable models of late-time cosmic acceleration without any need for flat potentials, and so…

High Energy Physics - Theory · Physics 2022-11-30 Max Brinkmann , Michele Cicoli , Giuseppe Dibitetto , Francisco G. Pedro

It has been recently proposed that at each infinite distance limit in the moduli space of quantum gravity a perturbative description emerges with fundamental degrees of freedom given by those infinite towers of states whose typical mass…

High Energy Physics - Theory · Physics 2023-09-22 Ralph Blumenhagen , Niccolò Cribiori , Aleksandar Gligovic , Antonia Paraskevopoulou

We formulate a series of conjectures relating the geometry of conformal manifolds to the spectrum of local operators in conformal field theories in $d>2$ spacetime dimensions. We focus on conformal manifolds with limiting points at infinite…

High Energy Physics - Theory · Physics 2021-10-27 Eric Perlmutter , Leonardo Rastelli , Cumrun Vafa , Irene Valenzuela

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 how the so-called species scale -- at which an effective…

High Energy Physics - Theory · Physics 2025-06-17 Bruno Valeixo Bento , João F. Melo

We study infinite-distance limits in the moduli space of perturbative string vacua. The remarkable interplay of string dualities seems to determine a highly non-trivial dichotomy, summarized by the emergent string conjecture, by which in…

High Energy Physics - Theory · Physics 2024-12-19 Christian Aoufia , Ivano Basile , Giorgio Leone

The distance conjecture diagnoses viable low-energy effective realisation of consistent theories of quantum gravity by examining their breakdown at infinite distance in their parameter space. At the same time, infinite distance points in…

High Energy Physics - Theory · Physics 2024-05-09 Saskia Demulder , Dieter Lust , Thomas Raml

In this note, we study the Swampland Distance Conjecture in TCS $G_2$ manifold compactifications of M-theory. In particular, we are interested in testing a refined version -- the Emergent String Conjecture, in settings with 4d $N=1$…

High Energy Physics - Theory · Physics 2020-10-28 Fengjun Xu

The Ooguri-Vafa Swampland Conjectures claim that in any consistent theory of quantum gravity, when venturing to large distances in scalar field space, a tower of particles will become light at a rate that is exponential in the field space…

High Energy Physics - Theory · Physics 2018-08-08 Ben Heidenreich , Matthew Reece , Tom Rudelius

We propose a new swampland conjecture stating that the limit of vanishing gravitino mass corresponds to the massless limit of an infinite tower of states and to the consequent breakdown of the effective field theory. We test our proposal in…

High Energy Physics - Theory · Physics 2021-06-24 Niccolò Cribiori , Dieter Lust , Marco Scalisi

It is expected that infinite distance limits in the moduli space of quantum gravity are accompanied by a tower of light states. In view of the emergent string conjecture, this tower must either induce a decompactification or correspond to…

High Energy Physics - Theory · Physics 2022-05-10 Rafael Álvarez-García , Daniel Kläwer , Timo Weigand

We use branes to generalize the Distance Conjecture. We conjecture that in any infinite-distance limit in the moduli space of a $d$-dimensional quantum gravity theory, among the set of particle towers and fundamental branes with at most…

High Energy Physics - Theory · Physics 2024-07-31 Muldrow Etheredge , Ben Heidenreich , Tom Rudelius

As famously observed by Ooguri and Vafa nearly twenty years ago, scalar field moduli spaces in quantum gravity appear to exhibit various universal features. For instance, they seem to be infinite in diameter, have trivial fundamental group,…

High Energy Physics - Theory · Physics 2024-05-22 Tom Rudelius

The concept of the species scale as the quantum gravity cut-off has been recently emphasised in the context of the Swampland program. Along these lines, we continue the quest for a precise understanding of its role within effective field…

High Energy Physics - Theory · Physics 2024-10-29 Alberto Castellano , Alvaro Herráez , Luis E. Ibáñez

For any unitary conformal field theory in two dimensions with the central charge $c$, we prove that, if there is a nontrivial primary operator whose conformal dimension $\Delta$ vanishes in some limit on the conformal manifold, the…

High Energy Physics - Theory · Physics 2024-07-12 Hirosi Ooguri , Yifan Wang

The classical information metric provides a unique notion of distance on the space of probability distributions with a well-defined operational interpretation: two distributions are far apart if they are readily distinguishable from one…

High Energy Physics - Theory · Physics 2021-06-23 John Stout

We demonstrate that string consistency in four spacetime dimensions leads to a spectrum of string states which satisfies the supertrace constraints Str(M^0)=0 and Str(M^2)=\Lambda at tree level, where \Lambda is the one-loop string…

High Energy Physics - Theory · Physics 2009-10-28 Keith R. Dienes , Moshe Moshe , Robert C. Myers

Asymptotic (late-time) cosmology depends on the asymptotic (infinite-distance) limits of scalar field space in string theory. Such limits feature an exponentially decaying potential $V \sim \exp(- c \phi)$ with corresponding Hubble scale $H…

High Energy Physics - Theory · Physics 2023-08-04 Tom Rudelius

Among Swampland conditions, the distance conjecture characterizes the geometry of scalar fields and the de Sitter conjecture constrains allowed potentials on it. We point out a connection between the distance conjecture and a refined…

High Energy Physics - Theory · Physics 2018-11-21 Hirosi Ooguri , Eran Palti , Gary Shiu , Cumrun Vafa