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CERN Document Server 8 notices trouvées  La recherche a duré 0.66 secondes. 
1.
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;
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2.
Open problems on classical de Sitter solutions / Andriot, David (CERN)
Classical 10d string backgrounds with a 4d de Sitter space-time, D-brane and orientifold sources, are commonly believed to satisfy the following: 1. There is no classical de Sitter solution with parallel sources. [...]
arXiv:1902.10093; CERN-TH-2019-019.- 2019-07-01 - 39 p. - Published in : Fortschr. Phys. 67 (2019) 1900026 Fulltext: PDF;
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3.
Further refining the de Sitter swampland conjecture / Andriot, David (CERN) ; Roupec, Christoph (Vienna, Tech. U.)
We propose an alternative refined de Sitter conjecture. It is given by a natural condition on a combination of the first and second derivatives of the scalar potential. [...]
arXiv:1811.08889; CERN-TH-2018-251.- 2019-01-01 - 19 p. - Published in : Fortschr. Phys. 67 (2019) 1800105 Fulltext: PDF;
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4.
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;
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5.
On the de Sitter swampland criterion / Andriot, David (CERN)
A new swampland criterion has recently been proposed. As a consequence, it forbids the existence of de Sitter solutions in a low energy effective theory of a quantum gravity. [...]
arXiv:1806.10999; CERN-TH-2018-148.- 2018-10-10 - 4 p. - Published in : Phys. Lett. B 785 (2018) 570-573 Article from SCOAP3: PDF; Preprint: PDF;
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6.
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;
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7.
On classical de Sitter and Minkowski solutions with intersecting branes / Andriot, David (CERN)
Motivated by the connection of string theory to cosmology or particle physics, we study solutions of type II supergravities having a four-dimensional de Sitter or Minkowski space-time, with intersecting Dp-branes and orientifold Op-planes. Only few such solutions are known, and we aim at a better characterisation. [...]
arXiv:1710.08886; CERN-TH-2017-222.- 2018-03-09 - 46 p. - Published in : JHEP 03 (2018) 054 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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8.
(Non-)commutative closed string on T-dual toroidal backgrounds / Andriot, David (Munich U., ASC ; Munich, Max Planck Inst.) ; Larfors, Magdalena (Oxford U., Inst. Math.) ; Lust, Dieter (Munich U., ASC ; Munich, Max Planck Inst. ; CERN) ; Patalong, Peter (Munich U., ASC ; Munich, Max Planck Inst.)
In this paper we investigate the connection between (non-)geometry and (non-)commutativity of the closed string. To this end, we solve the classical string on three T-dual toroidal backgrounds: a torus with H-flux, a twisted torus and a non-geometric background with Q-flux. [...]
arXiv:1211.6437; LMU-ASC-82-12; CERN-PH-TH-2012-325; MPP-2012-152; CERN-PH-TH-2012-235; MPP-2012-152; CERN-PH-TH-2012-325; CERN-PH-TH-2012-235.- 2013 - 48 p. - Published in : JHEP 06 (2013) 021 Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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