Results 31 to 40 of about 1,021,360 (234)
On destabilizing divergences in supergravity models [PDF]
Physics Letters B, 1995 We show that, for standard N=1 supergravity coupled to chiral matter, if the Kahler potential has no terms linear in chiral superfields then none are generated through quad. div. one--loop corrections. If however =0 and susy is spontaneously broken, linear terms are present and new linear terms may be generated due to nonrenormalizable couplings in K ...
openaire +3 more sources
Testing primordial black holes as dark matter in supergravity from gravitational waves
Physics Letters B, 2021 We explore the Gravitational Waves (GW) phenomenology of a simple class of supergravity models that can explain and unify inflation and Primordial Black Holes (PBH) as Dark Matter (DM).
Yermek Aldabergenov +2 more
doaj
On Asymmetric Orbifolds and the D=5 No-modulus Supergravity [PDF]
Phys.Lett. B523 (2001) 351-356, 2001 We examine whether any type II asymmetric orbifolds have the same massless spectrum as the dimensional reduction of D=5 simple supergravity, which, besides the eleven-dimensional supergravity, is the only known supergravity above four dimensions with no moduli.
arxiv +1 more source
On Nonstandard Vacuua in Minimal Supergravity Models [PDF]
Journal of High Energy Physics, 2003 The plethora of scalar fields participating in the formulation of a softly broken supersymmetric theory can threat the stability of the standard vacuum. The generic situation is twofold. Directions in scalar field space may exist along which the potential becomes unbounded from below or local minima deeper than the standard one are likely to appear ...
Gioutsos, D. V., Vayonakis, C. E.
openaire +4 more sources
Developments in Supergravity Unified Models [PDF]
, 2010 A review is given of developments in supergravity unified models proposed in 1982 and their implications for current and future experiment are discussed.
Richard L. Arnowitt, Pran Nath
openaire +3 more sources
The inflatino problem in supergravity inflationary models [PDF]
Physics Letters B, 2001 We consider the potential problems due to the production of inflatinos and gravitinos after inflation. Inflationary models with a single scale set by the microwave background anisotropies have a low enough reheat temperature to avoid problems with the thermal production of gravitinos.
Nilles H. P., Olive K. A., Peloso M.
openaire +4 more sources
Non-abelian fermionic T-duality in supergravity
Journal of High Energy Physics, 2021 Field transformation rules of the standard fermionic T-duality require fermionic isometries to anticommute, which leads to complexification of the Killing spinors and results in complex valued dual backgrounds.
Lev Astrakhantsev +2 more
doaj +1 more source
Consistent -models in supergravity [PDF]
Nuclear Physics B, 2000 A consistent N=1 supersymmetric $ $-model can be constructed, given a K hler manifold by adding chiral matter multiplets. Their scalar components are covariant tensors on the underlying K hler manifold. The K hler U(1)-charges can be adjusted such that the anomalies cancel, using the holomorphic functions in which the K hler potential transforms ...
J.W. van Holten, S. Groot Nibbelink
openaire +3 more sources
Constraints on supergravity chaotic inflationary models [PDF]
Physics Letters B, 1996 Latex file, 10 pages; important changes and references ...
Orfeu Bertolami, M. C. Bento
openaire +3 more sources
Supergravity from a Massive Superparticle and the Simplest Super Black Hole [PDF]
Nucl.Phys. B514 (1998) 355-378, 1997 We describe in superspace a theory of a massive superparticle coupled to a version of two dimensional N=1 dilaton supergravity. The (1+1) dimensional supergravity is generated by the stress-energy of the superparticle, and the evolution of the superparticle is reciprocally influenced by the supergravity.
arxiv +1 more source