Article
Physics, Particles & Fields
P. Pelliconi, A. Sagnotti
Summary: The passage delves into integrable dynamical systems derived from scalar-gravity Lagrangians containing dilaton tadpole potentials of broken supersymmetry, particularly within static compactifications. It highlights the issue of unbounded string coupling and space-time curvature in certain regions of internal space, while noting that string coupling remains bounded in specific solutions of these integrable models. Suggestions for corrected potential shapes under absence or non-linear realization of supersymmetry are provided, with acknowledgment of persistent large scalar curvatures in all examples and the potential mitigation through higher-derivative corrections of String Theory.
Article
Physics, Particles & Fields
Arthur Hebecker, Sascha Leonhardt
Summary: The paper discusses the problem of metastable SUSY breaking in the landscape and the challenge of SUSY breaking in the AdS context. It proposes breaking SUSY using multi-cosine-shaped axion potentials and considers the potential for violating the non-SUSY AdS conjecture in the KKLT context and the type-IIA setting of DGKT.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Adolfo Guarino, Colin Sterckx
Summary: The paper discusses flat deformations in Type IIB S-fold models, providing a group-theoretical characterization and a 5D interpretation involving so(6)-valued duality twists. It establishes the existence of two flat deformations in the N = 4 and SO(4) symmetric S-folds, causing symmetry breaking down to its U(1)(2) Cartan subgroup. The result is a new two-parameter family of non-supersymmetric S-folds, perturbatively stable at the lower-dimensional supergravity level, serving as the first examples of such backgrounds in Type IIB.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Hun Jang, Massimo Porrati
Summary: A new mechanism for generating a Fayet-Iliopoulos term in supergravity is proposed, not associated with an R-symmetry, to establish a semi-realistic theory of slow-roll inflation. In this model, supersymmetry must be broken at a high scale in a hidden sector to ensure that the cutoff of the effective field theory is above the Hubble scale of inflation.
Article
Physics, Particles & Fields
Emilian Dudas, Severin Lust
Summary: This study shows the impact of a light complex structure field in warped compactifications based on a Klebanov-Strassler throat on the cosmological constant. Additionally, it reveals that the contribution to supersymmetry breaking from this new light field is significant after uplifting the cosmological constant by an anti-D3 brane. Furthermore, it discusses how a hierarchically small scale of supersymmetry breaking leads to large values of localized D3 charges in the manifold.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Luis A. Anchordoqui, Ignatios Antoniadis, Niccolo Cribiori, Dieter Luest, Marco Scalisi
Summary: We argue that there is a relation between the supersymmetry breaking scale and the measured value of the dark energy density Lambda. This relation is derived by combining two quantum gravity consistency swampland constraints, which connect Lambda and the gravitino mass M-3/2 to the mass scale of a light Kaluza-Klein tower and the UV cut-off of the effective theory. The constraints on Lambda and M-3/2 lead to the Dark Dimension scenario and provide implications for the scale of supersymmetry breaking.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Victor Knapp-Perez, Xiang-Gan Liu, Hans Peter Nilles, Saul Ramos-Sanchez, Michael Ratz
Summary: Modular flavor symmetries offer a compelling solution to the flavor problem. It has been argued that moduli values close to specific values like t = i or t = w provide the best fits to data. The presence of hidden matter fields, necessary to uplift symmetric AdS vacua, leads to a dynamical mechanism that results in such values of t.
Article
Physics, Particles & Fields
Constantinos Pallis
Summary: New realizations of gravity-mediated SUSY breaking are introduced, consistent with an R symmetry. By utilizing specific superpotential terms and potentials in the hidden sector superfield and Kahler manifolds, solutions to the mu problem and R axion mass problem are achieved. Through mild violation of the R symmetry, non-vanishing soft SUSY-breaking parameters are obtained, leading to phenomenologically acceptable results.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
Gianguido Dall'Agata, Maxim Emelin, Fotis Farakos, Matteo Morittu
Summary: This study demonstrates that charged gravitini with parametrically small or vanishing Lagrangian mass in de Sitter vacua of extended supergravity cannot be consistent with the magnetic weak gravity conjecture. This implies that a significant portion of de Sitter solutions in gauged supergravity, including stable solutions of the N=2 theory, are in the swampland. The results suggest that (quasi) de Sitter scenarios with charged light gravitini should be considered part of the swampland, aligning with the festina lente bound.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
G. Dall'Agata, G. Inverso, D. Partipilo
Summary: In 5-dimensional maximally supersymmetric gauged supergravity, critical points with U(2) residual symmetry were identified through varying the embedding tensor instead of directly minimizing the scalar potential. Four new vacua with different gauge groups and cosmological constants were discovered, in addition to recovering all previously known vacua. The first example of a maximal supergravity model in D >= 4 having critical points with both positive and vanishing cosmological constant was provided, with the full mass spectrum computed for each vacuum.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Eduardo Gonzalo, Luis E. Ibanez, Irene Valenzuela
Summary: This study examines the constraints on D-dimensional theories in M-D, dS(D) and AdS(D) backgrounds in the context of AdS swampland conjectures, particularly focusing on the non-SUSY AdS instability conjecture and the AdS distance conjecture. The results suggest the importance of the light fermion conjecture for M-D and dS(D) vacua, indicating the presence of a surplus of light fermions in certain conditions.
Article
Physics, Particles & Fields
Adolfo Guarino, Colin Sterckx
Summary: This work investigates holographic RG flows on the D3-brane for Type IIB S-folds, showing how anisotropic deformations of SYM4 in the UV are connected to S-fold CFT's in the IR with different amounts of supersymmetry and flavour symmetries. Additionally, examples of holographic RG flows between S-fold CFT's are presented, along with a geometric interpretation of axion deformations in terms of monodromies on the internal S-5 when moving around the S-1.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yuta Hamada, Cumrun Vafa
Summary: By studying consistency conditions on worldvolume theory of 3-brane probes, we strengthen Swampland constraints on 8d supergravity theories, leading to strict restrictions on compact internal geometry, gauge algebra, and higher derivative terms. These results provide further evidence for the string lamppost principle in 8d with 16 supercharges.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Thibaut Coudarchet, Emilian Dudas, Herve Partouche
Summary: This study investigates a novel realization of brane supersymmetry breaking inspired by the Orientifold projection, focusing on the roles of D-branes and the breaking of supersymmetry at the string scale or at the massive level. The main feature of this construction is the absence of NS-NS disk tadpoles, while minimizing supersymmetry in the one-loop potential using a non-linear realized method.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Fotis Farakos, Alex Kehagias, Nikolaos Liatsos
Summary: We investigate the breaking of supersymmetry through a complex linear superfield coupled to 4D N=1 supergravity. The theory exhibits two classically decoupled vacua, one supersymmetric and another one with broken and intrinsically non-linear supersymmetry. Depending on the parameter values, the scalar potential can result in no-scale Minkowski or stable de Sitter or anti-de Sitter vacua. We also present a dual description of the system using a nilpotent chiral superfield and a standard chiral coupled to supergravity.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)