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1.
Laplacian spectrum on a nilmanifold, truncations and effective theories / Andriot, David (CERN) ; Tsimpis, Dimitrios (Lyon, IPN)
Motivated by low energy effective theories arising from compactification on curved manifolds, we determine the complete spectrum of the Laplacian operator on the three-dimensional Heisenberg nilmanifold. We first use the result to construct a finite set of forms leading to an N=2 gauged supergravity, upon reduction on manifolds with SU(3) structure. [...]
arXiv:1806.05156; CERN-TH-2018-137.- 2018-09-17 - 27 p. - Published in : JHEP 09 (2018) 096 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
2.
New constraints on classical de Sitter: flirting with the swampland / Andriot, David (CERN)
We study the existence and stability of classical de Sitter solutions of type II supergravities with parallel Dp-branes and orientifold Op-planes. Together with the dilaton and volume scalar fields, we consider a third one that distinguishes between parallel and transverse directions to the Dp/Op. [...]
arXiv:1807.09698; CERN-TH-2018-173.- 2019-01-01 - 30 p. - Published in : Fortschr. Phys. 67 (2019) 1800103 Fulltext: PDF;
3.
Moduli-dependent Calabi-Yau and SU(3)-structure metrics from Machine Learning / Anderson, Lara B. (Virginia Tech.) ; Gerdes, Mathis (Munich U., ASC) ; Gray, James (Virginia Tech.) ; Krippendorf, Sven (Munich U., ASC) ; Raghuram, Nikhil (Virginia Tech.) ; Ruehle, Fabian (CERN ; Oxford U., Theor. Phys.)
We use machine learning to approximate Calabi-Yau and SU(3)-structure metrics, including for the first time complex structure moduli dependence. Our new methods furthermore improve existing numerical approximations in terms of accuracy and speed [...]
arXiv:2012.04656; CERN-TH-2020-205.- 2021-05-03 - 15 p. - Published in : JHEP 2105 (2021) 013 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: Anderson2021_Article_Moduli-dependentCalabi-YauAndS_2 - PDF; 2012.04656 - PDF;
4.
Degree of non-Kählerianity for 6-dimensional nilmanifolds / Angella, Daniele (Pisa U.) ; Franzini, Maria Giovanna (Parma U.) ; Rossi, Federico Alberto (Milan Bicocca U. ; CERN ; Sincrotrone Trieste)
We use Bott-Chern cohomology to measure the non-K\'ahlerianity of 6-dimensional nilmanifolds endowed with the left-invariant complex structures in M. [...]
arXiv:1210.0406.
- 2012. - 15 p.
Full text
5.
Moduli-dependent KK towers and the swampland distance conjecture on the quintic Calabi-Yau manifold / Ashmore, Anthony (Chicago U. ; Chicago U., EFI ; Paris, LPTHE) ; Ruehle, Fabian (CERN ; Oxford U., Theor. Phys.)
We use numerical methods to obtain moduli-dependent Calabi-Yau metrics and from them the moduli-dependent massive tower of Kaluza-Klein states for the one-parameter family of quintic Calabi-Yau manifolds. We then compute geodesic distances in their Kähler and complex structure moduli space using exact expressions from mirror symmetry, approximate expressions, and numerical methods and compare the results. [...]
arXiv:2103.07472; CERN-TH-2021-032.- 2021-05-29 - 10 p. - Published in : Phys. Rev. D 103 (2021) 106028 Article from SCOAP3: PDF; Fulltext: PDF;
6.
Swampland Conjectures and Infinite Flop Chains / Brodie, Callum R. (IPhT, Saclay) ; Constantin, Andrei (Oxford U., Theor. Phys. ; U. Oxford (main)) ; Lukas, Andre (Oxford U., Theor. Phys.) ; Ruehle, Fabian (CERN ; Oxford U., Theor. Phys.)
We investigate swampland conjectures for quantum gravity in the context of M-theory compactified on Calabi-Yau threefolds which admit infinite sequences of flops. Naively, the moduli space of such compactifications contains paths of arbitrary geodesic length traversing an arbitrarily large number of Kähler cones, along which the low-energy spectrum remains virtually unchanged. [...]
arXiv:2104.03325; CERN-TH-2021-051.- 2021-08-04 - 9 p. - Published in : Phys. Rev. D 104 (2021) 046008 Fulltext: PDF; Fulltext from publisher: PDF;
7.
Tensionless Strings and the Weak Gravity Conjecture / Lee, Seung-Joo (CERN) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (CERN ; Heidelberg U.)
We test various conjectures about quantum gravity for six-dimensional string compactifications in the framework of F-theory. Starting with a gauge theory coupled to gravity, we analyze the limit in K\"ahler moduli space where the gauge coupling tends to zero while gravity is kept dynamical. [...]
arXiv:1808.05958; CERN-TH-2018-190.- 2018-10-25 - 81 p. - Published in : JHEP 10 (2018) 164 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
8.
Gravitational waves in warped compactifications / Andriot, David (Vienna, Tech. U. ; CERN) ; Tsimpis, Dimitrios (IP2I, Lyon)
We study gravitational waves propagating on a warped Minkowski space-time with D-4 compact extra dimensions. While Kaluza-Klein scales are typically too high for any current detection, we analyse how the warp factor changes the Kaluza-Klein spectrum of gravitational waves. [...]
arXiv:1911.01444.- 2020-06-16 - 38 p. - Published in : JHEP 2006 (2020) 100 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Fulltext from publisher: PDF;
9.
On Higher-Spin Points and Infinite Distances in Conformal Manifolds / Baume, Florent (Pennsylvania U. ; Hamburg U., Inst. Theor. Phys. II) ; Calderón-Infante, José (CERN)
Distances in the conformal manifold, the space of CFTs related by marginal deformations, can be measured in terms of the Zamolodchikov metric. Part of the CFT Distance Conjecture posits that points in this manifold where part of the spectrum becomes free, called higher-spin points, can only be at infinite distance from the interior. [...]
arXiv:2305.05693; CERN-TH-2023-067; ZMP-HH/23-6.- 2023-12-22 - 51 p. - Published in : JHEP 2312 (2023) 163 Fulltext: document - PDF; 2305.05693 - PDF;
10.
Emergence of Species Scale Black Hole Horizons / Calderón-Infante, José (CERN) ; Delgado, Matilda (Madrid, IFT) ; Uranga, Angel M. (Madrid, IFT)
The scale at which quantum gravity becomes manifest, the species scale Λs, 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 field theories coupled to quantum gravity to shed light on how the three different physical manifestations of the species scale Λs relate to each other. [...]
arXiv:2310.04488; IFT-UAM/CSIC-23-123; CERN-TH-2023-173.- 2024-01-02 - 40 p. - Published in : JHEP 2401 (2024) 003 Fulltext: 2310.04488 - PDF; Publication - PDF;

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