Results 31 to 40 of about 431 (150)
Ten-dimensional origin of Minkowski vacua in N=8 supergravity
Physics Letters B, 2018 Maximal supergravity in four dimensions admits two inequivalent dyonic gaugings of the group SO(4)×SO(2,2)⋉T16. Both admit a Minkowski vacuum with residual SO(4)×SO(2)2 symmetry and identical spectrum. We explore these vacua and their deformations. Using
Emanuel Malek, Henning Samtleben
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On outer automorphism groups of coxeter groups
Manuscripta Mathematica, 1997 It is shown that the outer automorphism group of a Coxeter groupW of finite rank is finite if the Coxeter graph contains no infinite bonds. A key step in the proof is to show that if the group is irreducible andΠ1 andΠ2 any two bases of the root system ofW, thenΠ2 = ±ωΠ1 for some ω eW.
Howlett, R.B. +2 more
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AUTOMORPHISM AND OUTER AUTOMORPHISM GROUPS OF RIGHT-ANGLED ARTIN GROUPS ARE NOT RELATIVELY HYPERBOLIC [PDF]
Bulletin of the Australian Mathematical Society, 2022 AbstractWe show that the automorphism groups of right-angled Artin groups whose defining graphs have at least three vertices are not relatively hyperbolic. We then show that the outer automorphism groups are also not relatively hyperbolic, except for a few exceptional cases.
JUNSEOK KIM +2 more
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A Kazhdan group with an infinite outer automorphism group [PDF]
Surveys in Mathematics and its Applications, 2012 D. Kazhdan has introduced in 1967 the Property (T) for local compact groups (see [D. Kazhdan, Connection of the dual space of a group with the structure of its closed subgroups, Funct. Anal. Appl. 1 (1967)]). In this article we prove that for n ≥ 3 and m
Traian Preda
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Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications
Nuclear Physics B, 2021 We explore the geometrical origin of CP and the spontaneous CP violation in Calabi-Yau compactifications. We find that the CP symmetry is identified with an outer automorphism of the symplectic modular group in the large complex structure regime of ...
Keiya Ishiguro +2 more
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Outer automorphisms of classical algebraic groups
Annales scientifiques de l'École normale supérieure, 2018 The so-called Tits class, associated to an adjoint absolutely almost simple algebraic group, provides a cohomological obstruction for this group to admit an outer automorphism. If the group has inner type, this obstruction is the only one. In this paper, we prove this is not the case for classical groups of outer type, except for groups of type $^2 ...
Quéguiner-Mathieu, Anne +1 more
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Homology stability for outer automorphism groups of free groups [PDF]
Algebraic & Geometric Topology, 2004 Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol4/agt-4-54.abs ...
Hatcher, Allen, Vogtmann, Karen
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4d N $$ \mathcal{N} $$ =2 theories with disconnected gauge groups
Journal of High Energy Physics, 2017 In this paper we present a beautifully consistent web of evidence for the existence of interacting 4d rank-1 N $$ \mathcal{N} $$ = 2 SCFTs obtained from gauging discrete subgroups of global symmetries of other existing 4d rank-1 N $$ \mathcal{N} $$ = 2 ...
Philip C. Argyres, Mario Martone
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On the outer automorphism groups of free groups
Journal of Algebra, 2014 Preprint ...
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Flux Landscape with enhanced symmetry not on SL(2, ℤ) elliptic points
Journal of High Energy PhysicsWe study structures of solutions for SUSY Minkowski F-term equations on two toroidal orientifolds with h 2,1 = 1. Following our previous study [1], with fixed upper bounds of a flux D3-brane charge N flux, we obtain a whole Landscape and a distribution ...
Keiya Ishiguro +3 more
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