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CERN Document Server Sök i 14 journaler efter:  1 - 10nästa  gå till journal: Sökningen tog 0.59 sekunder. 
1.
Physics of Infinite Complex Structure Limits in eight Dimensions / Lee, Seung-Joo (IBS, Daejeon) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (Hamburg U., Inst. Theor. Phys. II ; Hamburg U., Dept. Math.)
We investigate infinite distance limits in the complex structure moduli space of F-theory compactified on K3 to eight dimensions. While this is among the simplest possible arenas to test ideas about the Swampland Distance Conjecture, it is nevertheless non-trivial enough to improve our understanding of the physics for these limiting geometries, including phenomena of emergence. [...]
arXiv:2112.08385; CERN-TH-2021-214; CTPU-PTC-21-41; ZMP-HH/21-24.- 2022-06-08 - 58 p. - Published in : JHEP 2206 (2022) 042 Fulltext: 2112.08385 - PDF; document - PDF;
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2.
Holomorphic Anomalies, Fourfolds and Fluxes / Lee, Seung-Joo (IBS, Daejeon) ; Lerche, Wolfgang (CERN) ; Lockhart, Guglielmo (CERN) ; Weigand, Timo (Hamburg U., Inst. Theor. Phys. II ; Hamburg U., Dept. Math.)
We investigate holomorphic anomalies of partition functions underlying string compactifications on Calabi-Yau fourfolds with background fluxes. For elliptic fourfolds the partition functions have an alternative interpretation as elliptic genera of N=1 supersymmetric string theories in four dimensions, or as generating functions for relative Gromov-Witten invariants of fourfolds with fluxes. [...]
arXiv:2012.00766.- 2022-03-11 - 67 p. - Published in : JHEP 2203 (2022) 072 Fulltext: document - PDF; 2012.00766 - PDF;
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3.
Quasi-Jacobi Forms, Elliptic Genera and Strings in Four Dimensions / Lee, Seung-Joo (IBS, Daejeon, CTPU) ; Lerche, Wolfgang (CERN) ; Lockhart, Guglielmo (CERN) ; Weigand, Timo (U. Mainz, PRISMA ; Mainz U., Inst. Phys.)
We investigate the interplay between the enumerative geometry of Calabi-Yau fourfolds with fluxes and the modularity of elliptic genera in four-dimensional string theories. We argue that certain contributions to the elliptic genus are given by derivatives of modular or quasi-modular forms, which encode BPS invariants of Calabi-Yau or non-Calabi-Yau threefolds that are embedded in the given fourfold. [...]
arXiv:2005.10837.- 2021-01-26 - 95 p. - Published in : JHEP 2101 (2021) 162 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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4.
Quasi-Jacobi Forms, Elliptic Genera and Strings in Four Dimensions / Lee, Seung-Joo (IBS) ; Lerche, Wolfgang (CERN) ; Lockhart, Guglielmo (CERN) ; Weigand, Timo (UMainz)
We investigate the interplay between the enumerative geometry of Calabi-Yau fourfolds with fluxes and the modularity of elliptic genera in four-dimensional string theories. [...]
CERN-TH-2020-077. - 2020. - 90.
Full text
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5.
Machine Learning String Standard Models / Deen, Rehan (Oxford U., Theor. Phys.) ; He, Yang-Hui (Nankai U. ; London, City U. ; Merton Coll., Oxford) ; Lee, Seung-Joo (IBS, Daejeon ; CERN) ; Lukas, Andre (Oxford U., Theor. Phys.)
We study machine learning of phenomenologically relevant properties of string compactifications, which arise in the context of heterotic line bundle models. Both supervised and unsupervised learning are considered. [...]
arXiv:2003.13339; CERN-TH-2020-050; CTPU-PTC-20-06.- 2022-02-02 - 10 p. - Published in : Phys. Rev. D 105 (2022) 046001 Fulltext: 2003.13339 - PDF; PhysRevD.105.046001 - PDF;
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6.
Emergent Strings from Infinite Distance Limits / Lee, Seung-Joo (CERN) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (CERN ; U. Mainz, PRISMA)
As a refinement of the Swampland Distance Conjecture, we propose that a quantum gravitational theory in an infinite distance limit of its moduli space either decompactifies, or reduces to an asymptotically tensionless, weakly coupled string theory. We support our claim by classifying, as special cases, the behaviour of M-Theory and Type IIA string theory compactifications on Calabi-Yau three-folds at infinite distances in Kahler moduli space. [...]
arXiv:1910.01135; CERN-TH-2019-159.- 2022-02-24 - 96 p. - Published in : JHEP 2202 (2022) 190 Fulltext: document - PDF; 1910.01135 - PDF;
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7.
Swampland Bounds on the Abelian Gauge Sector / Lee, Seung-Joo (CERN) ; Weigand, Timo (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA)
We derive bounds on the number of abelian gauge group factors in six-dimensional gravitational theories with minimal supersymmetry and in their F-theoretic realisations. These bounds follow by requiring consistency of certain BPS strings in the spectrum of the theory, as recently proposed in the literature. [...]
arXiv:1905.13213; CERN-TH-2019-082.- 2019-07-25 - 10 p. - Published in : Phys. Rev. D 100 (2019) 026015 Article from SCOAP3: PDF; Fulltext: PDF;
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8.
Emergent Strings, Duality and Weak Coupling Limits for Two-Form Fields / Lee, Seung-Joo (CERN) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA)
We systematically analyse weak coupling limits for 2-form tensor fields in the presence of gravity. Such limits are significant for testing various versions of the Weak Gravity and Swampland Distance Conjectures, and more broadly, the phenomenon of emergence. [...]
arXiv:1904.06344; CERN-TH-2019-044.- 2022-02-11 - 30 p. - Published in : JHEP 2202 (2022) 096 Fulltext: document - PDF; 1904.06344 - PDF;
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9.
Distinguishing Elliptic Fibrations with AI / He, Yang-Hui (University Coll. London ; Merton Coll., Oxford ; Nankai U.) ; Lee, Seung-Joo (CERN)
We use the latest techniques in machine-learning to study whether from the landscape of Calabi-Yau manifolds one can distinguish elliptically fibred ones. Using the dataset of complete intersections in products of projective spaces (CICY3 and CICY4, totalling about a million manifolds) as a concrete playground, we find that a relatively simple neural network with forward-feeding multi-layers can very efficiently distinguish the elliptic fibrations, much more so than using the traditional methods of manipulating the defining equations. [...]
arXiv:1904.08530; CERN-TH-2019-046.- 2019-11-10 - 6 p. - Published in : Phys. Lett. B 798 (2019) 134889 Article from SCOAP3: PDF; Fulltext: PDF;
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10.
Modular Fluxes, Elliptic Genera, and Weak Gravity Conjectures in Four Dimensions / Lee, Seung-Joo (CERN) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA)
We analyse the Weak Gravity Conjecture for chiral four-dimensional F-theory compactifications with N=1 supersymmetry. Extending our previous work on nearly tensionless heterotic strings in six dimensions, we show that under certain assumptions a tower of asymptotically massless states arises in the limit of vanishing coupling of a U(1) gauge symmetry coupled to gravity. [...]
arXiv:1901.08065.- 2019-08-21 - 73 p. - Published in : JHEP 1908 (2019) 104 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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CERN Document Server : Sök i 14 journaler efter:   1 - 10nästa  gå till journal:
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