Results 91 to 100 of about 21,312,209 (267)
Swampland conjectures for type IIB orientifolds with closed-string U(1)s
Journal of High Energy Physics, 2020 We study the weak gravity conjecture, the swampland distance conjecture and the emergence proposal for N $$ \mathcal{N} $$ = 1 orientifold compactifications of type IIB string theory with O3-/O7-planes. We allow for orientifold projections with h + 2 , 1
Martín Enríquez Rojo, Erik Plauschinn
doaj +1 more source
N=2 supergravity models with stable de Sitter vacua. [PDF]
, 2003 In this paper, we shall review the construction of N = 2 supergravity models exhibiting stable de Sitter vacua. These solutions represent the first instance of stable backgrounds with positive cosmological constant in theframework of extended ...
P. Fré, M. Trigiante, A. Proeyen
semanticscholar +1 more source
New constraints on supergravity models from b-->s gamma. [PDF]
Physical Review D, Particles and fields, 1994 We perform a detailed study of the constraints from [ital b][r arrow][ital s][gamma] on a large class of supergravity models, including generic four-parameter supergravity models, the minimal SU(5) supergravity model, and SU(5)[times]U(1) supergravity ...
López, Nanopoulos, Wang, Zichichi
semanticscholar +1 more source
Energy conditions in Starobinsky supergravity [PDF]
, 2017 We consider the classical energy conditions (strong, null and weak) in Starobinsky supergravity theories. We study in detail the simplest Starobinsky supergravity model in the "old-minimal" supergravity setup and find examples of violations of each energy condition for a certain range of the parameters due to extra scalar d.o.f. present in supergravity.
arxiv +1 more source
ChemSusChem, Volume 18, Issue 5, March 3, 2025.This review focuses on the electrochemical synthesis of MnO2 materials and their composites and their application as electrocatalysts for OER and HER reactions for the conversion of renewable energy into chemical fuels. The electrocatalytic function of electrodeposited MnO2 for ORR and bifunctional ORR/OER for efficient operation of fuel cells and ...
Masaharu Nakayama, Wataru Yoshida
wiley +1 more source
Supersymmetric action for 6D (4, 0) supergravity
Journal of High Energy Physics, 2022 We give a linearized but otherwise complete supersymmetric action for N $$ \mathcal{N} $$ = (4, 0) supergravity in six dimensions, using a Kaluza-Klein-type 5 + 1 split of coordinates and fields.
Yannick Bertrand +3 more
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The Complete Solution of 2D Superfield Supergravity from graded Poisson-Sigma Models and the Super Pointparticle [PDF]
Phys.Rev. D68 (2003) 104005, 2003 Recently an alternative description of 2d supergravities in terms of graded Poisson-Sigma models (gPSM) has been given. As pointed out previously by the present authors a certain subset of gPSMs can be interpreted as "genuine" supergravity, fulfilling the well-known limits of supergravity, albeit deformed by the dilaton field.
arxiv +1 more source
Chemistry–Methods, Volume 5, Issue 3, March 2025.Different electrochemical and physicochemical methods employed for metal recovery and removal from various sources are presented herein, along with their key performance indicators. The main strengths and weaknesses of each technology are discussed in a comparative manner, when possible.
Stefanos Mourdikoudis +1 more
wiley +1 more source
Relic density of neutralino dark matter in supergravity models [PDF]
, 1997 We calculate the relic density $({\ensuremath{\Omega}}_{{\ensuremath{\chi}}_{1}^{0}}{h}^{2})$ of neutralino dark matter in supergravity models with radiative electroweak symmetry breaking, for values of the Higgs sector parameter $\mathrm{tan}\ensuremath{
V. Barger, C. Kao
semanticscholar +1 more source
On AdS4 superspace and supergravity
Journal of High Energy PhysicsIn the N = 1 superspace, AdS4 supersymmetry is realized as the non-linear super coordinate transformations. The fermionic coordinates form a faithful non-linear representation of supersymmetry on their own.
Chen-Xu Han, Zhao-Long Wang, Yi Yan
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