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- W4220922456 abstract "A bstract We present a detailed study of the effective cones of Calabi-Yau threefolds with h 1 , 1 = 2, including the possible types of walls bounding the Kähler cone and a classification of the intersection forms arising in the geometrical phases. For all three normal forms in the classification we explicitly solve the geodesic equation and use this to study the evolution near Kähler cone walls and across flop transitions in the context of M-theory compactifications. In the case where the geometric regime ends at a wall beyond which the effective cone continues, the geodesics “crash” into the wall, signaling a breakdown of the M-theory supergravity approximation. For illustration, we characterise the structure of the extended Kähler and effective cones of all h 1 , 1 = 2 threefolds from the CICY and Kreuzer-Skarke lists, providing a rich set of examples for studying topology change in string theory. These examples show that all three cases of intersection form are realised and suggest that isomorphic flops and infinite flop sequences are common phenomena." @default.
- W4220922456 created "2022-04-03" @default.
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- W4220922456 date "2022-03-01" @default.
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- W4220922456 title "Geodesics in the extended Kähler cone of Calabi-Yau threefolds" @default.
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- W4220922456 doi "https://doi.org/10.1007/jhep03(2022)024" @default.
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