Results 51 to 60 of about 9,369 (182)
On (scalar QED) gravitational positivity bounds
Journal of High Energy Physics, 2023 We study positivity bounds in the presence of gravity. We first review the gravitational positivity bound at the tree-level, where it is known that a certain amount of negativity is allowed for the coefficients of higher-derivative operators. The size of
Yuta Hamada +3 more
doaj +1 more source
Holography for Non-Critical Superstrings [PDF]
, 1999 We argue that a class of ``non-critical superstring'' vacua is holographically related to the (non-gravitational) theory obtained by studying string theory on a singular Calabi-Yau manifold in the decoupling limit $g_s\to 0$.
Giveon, A., Kutasov, D., Pelc, O.
core +4 more sources
Searching the landscape of flux vacua with genetic algorithms
Journal of High Energy Physics, 2019 In this paper, we employ genetic algorithms to explore the landscape of type IIB flux vacua. We show that genetic algorithms can efficiently scan the landscape for viable solutions satisfying various criteria. More specifically, we consider a symmetric T
Alex Cole, Andreas Schachner, Gary Shiu
doaj +1 more source
On scale separation in type II AdS flux vacua
Journal of High Energy Physics, 2020 We study the separation of AdS and Kaluza-Klein (KK) scales in type II 4d AdS orientifold vacua. We first address this problem in toroidal/orbifold type IIA vacua with metric fluxes, corresponding to compactifications in twisted tori, both from the 4d ...
Anamaría Font +2 more
doaj +1 more source
Supersymmetry preserving and breaking degenerate vacua, and radiative moduli stabilization [PDF]
, 2017 We propose a new type of moduli stabilization scenario where the supersymmetric and supersymmetry-breaking minima are degenerate at the leading level. The inclusion of the loop-corrections originating from the matter fields resolves this degeneracy of ...
Kobayashi, Tatsuo +3 more
core +2 more sources
De Sitter vacua — when are ‘subleading corrections’ really subleading?
Journal of High Energy Physics, 2023 We consider various string-loop, warping and curvature corrections that are expected to appear in type IIB moduli stabilisation scenarios. It has recently been argued, in the context of strongly-warped LVS de Sitter vacua, that it is impossible to ...
Bruno Valeixo Bento +3 more
doaj +1 more source
, 1995 We present dyonic multi-membrane solutions of the N=2 D=8 supergravity theory that serves as the effective field theory of the $T^2$-compactified type II superstring theory.
Duff +25 more
core +2 more sources
On fluxes in the 19 Landau-Ginzburg model
Journal of High Energy Physics, 2023 In this paper we present a large class of flux backgrounds and solve the shortest vector problem in type IIB string theory on an orientifold of the 19 Landau-Ginzburg model.
Katrin Becker +2 more
doaj +1 more source
Moduli stabilization in asymptotic flux compactifications
Journal of High Energy Physics, 2022 We present a novel strategy to systematically study complex-structure moduli stabilization in Type IIB and F-theory flux compactifications. In particular, we determine vacua in any asymptotic regime of the complex-structure moduli space by exploiting ...
Thomas W. Grimm +2 more
doaj +1 more source
On the Picture Dependence of Ramond-Ramond Cohomology [PDF]
, 1997 Closed string physical states are BRST cohomology classes computed on the space of states annihilated by $b_0^-$. Since $b_0^-$ does not commute with the operations of picture changing, BRST cohomologies at different pictures need not agree.
Aref'eva +42 more
core +2 more sources