1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- ETH ZurichCH96 papers
- Tokyo University of ScienceJP12 papers
- KTH Royal Institute of TechnologySE10 papers
- McGill UniversityCA10 papers
- Stockholm UniversitySE10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Nordic Institute for Theoretical PhysicsSE8 papers
- Universidad Autónoma de MadridES7 papers
- Aix-Marseille UniversitéFR6 papers
- Heidelberg UniversityDE6 papers
- Instituto de Física TeóricaES6 papers
- Kyoto UniversityJP6 papers
97 papers
Convex hulls of surfaces in fourspace
Chiara Meroni, Kristian Ranestad, Rainer Sinn
This is a case study of the algebraic boundary of convex hulls of varieties. We focus on surfaces in fourspace to showcase new geometric phenomena that neither curves nor hypersurf…
Horndeski under the quantum loupe
Lavinia Heisenberg, Johannes Noller, Jann Zosso
With recent constraints on the propagation speed of gravitational waves, the class of scalar-tensor theories has significantly been reduced. We consider one of the surviving models…
Cosmological constraints on dark energy in light of gravitational wave bounds
Johannes Noller
Gravitational wave (GW) constraints have recently been used to significantly restrict models of dark energy and modified gravity. New bounds arising from GW decay and GW-induced da…
Black Hole Ringdown as a Probe for Dark Energy
Johannes Noller, Luca Santoni, Enrico Trincherini +1
Under the assumption that a dynamical scalar field is responsible for the current acceleration of the Universe, we explore the possibility of probing its physics in black hole merg…
Counting Hamilton cycles in Dirac hypergraphs
Stefan Glock, Stephen Gould, Felix Joos +2
A tight Hamilton cycle in a -uniform hypergraph (-graph) is a cyclic ordering of the vertices of such that every set of consecutive vertices in the ordering forms…
Scattering diagrams, stability conditions, and coherent sheaves on
Pierrick Bousseau
We show that a purely algebraic structure, a two-dimensional scattering diagram, describes a large part of the wall-crossing behavior of moduli spaces of Bridgeland semistable obje…
Edge Universality for non-Hermitian Random Matrices
Giorgio Cipolloni, László Erdős, Dominik Schröder
We consider large non-Hermitian real or complex random matrices with independent, identically distributed centred entries. We prove that their local eigenvalue statistics near…
Pseudorandom hypergraph matchings
Stefan Ehard, Stefan Glock, Felix Joos
A celebrated theorem of Pippenger states that any almost regular hypergraph with small codegrees has an almost perfect matching. We show that one can find such an almost perfect ma…
Scale independent inflation
Pedro G. Ferreira, Christopher T. Hill, Johannes Noller +1
Weyl (scale) invariant theories of scalars and gravity can generate all mass scales spontaneously. In this paper we study a particularly simple version -- scale invariant gra…
Constraints on nonlocality in networks from no-signaling and independence
Nicolas Gisin, Jean-Daniel Bancal, Yu Cai +5
Generalising the concept of Bell nonlocality to networks leads to novel forms of correlations, the characterization of which is however challenging. Here we investigate constraints…
On the functoriality of sl(2) tangle homology
Anna Beliakova, Matthew Hogancamp, Krzysztof Karol Putyra +1
We construct an explicit equivalence between the (bi)category of gl(2) webs and foams and the Bar-Natan (bi)category of Temperley-Lieb diagrams and cobordisms. With this equivalenc…
Refined floor diagrams from higher genera and lambda classes
Pierrick Bousseau
We show that, after the change of variables , refined floor diagrams for and Hirzebruch surfaces compute generating series of higher genus relative Gromov-…
Positivity in the sky
Scott Melville, Johannes Noller
Positivity bounds - the consequences of requiring a unitary, causal, local UV completion - place strong restrictions on theories of dark energy and/or modified gravity. We derive a…
The canonical frame of purified gravity
Jose Beltrán Jiménez, Lavinia Heisenberg, Tomi S. Koivisto
In the recently introduced gauge theory of translations, dubbed Coincident General Relativity, gravity is described with neither torsion nor curvature in the spacetime affine geome…
Communication cost of consensus for nodes with limited memory
Giulia Fanti, Nina Holden, Yuval Peres +1
Motivated by applications in blockchains and sensor networks, we consider a model of nodes trying to reach consensus on their majority bit. Each node is assigned a bit at t…
Cosmological parameter constraints for Horndeski scalar-tensor gravity
Johannes Noller, Andrina Nicola
We present new cosmological parameter constraints for general Horndeski scalar-tensor theories, using CMB, redshift space distortion, matter power spectrum and BAO measurements fro…
Radiative stability and observational constraints on dark energy and modified gravity
Johannes Noller, Andrina Nicola
We investigate the radiative stability of Horndeski scalar-tensor theories with luminally propagating gravitational waves (as extensively discussed in the wake of GW170817) and sho…
Dense induced bipartite subgraphs in triangle-free graphs
Matthew Kwan, Shoham Letzter, Benny Sudakov +1
The problem of finding dense induced bipartite subgraphs in -free graphs has a long history, and was posed 30 years ago by Erdős, Faudree, Pach and Spencer. In this paper, we ob…
Monochromatic trees in random tournaments
Matija Bucic, Sven Heberle, Shoham Letzter +1
We prove that, with high probability, in every -edge-colouring of the random tournament on vertices there is a monochromatic copy of every oriented tree of order $O (n / \sq…
Cusp Universality for Random Matrices I: Local Law and the Complex Hermitian Case
László Erdős, Torben Krüger, Dominik Schröder
For complex Wigner-type matrices, i.e. Hermitian random matrices with independent, not necessarily identically distributed entries above the diagonal, we show that at any cusp sing…
Euler tours in hypergraphs
Stefan Glock, Felix Joos, Daniela Kühn +1
We show that a quasirandom -uniform hypergraph has a tight Euler tour subject to the necessary condition that divides all vertex degrees. The case when is complete c…
Minimalist designs
Ben Barber, Stefan Glock, Daniela Kühn +3
The iterative absorption method has recently led to major progress in the area of (hyper-)graph decompositions. Amongst other results, a new proof of the Existence conjecture for c…
A systematic approach to generalisations of General Relativity and their cosmological implications
Lavinia Heisenberg
A century ago, Einstein formulated his elegant and elaborate theory of General Relativity, which has so far withstood a multitude of empirical tests with remarkable success. Notwit…
Gauge-ready formulation of cosmological perturbations in scalar-vector-tensor theories
Lavinia Heisenberg, Ryotaro Kase, Shinji Tsujikawa
In scalar-vector-tensor (SVT) theories with parity invariance, we perform a gauge-ready formulation of cosmological perturbations on the flat Friedmann-Lemaître-Robertson-Walker (F…