Results 101 to 110 of about 9,369 (182)

Static Domain Walls in N=1 Supergravity

open access: yes, 1992
We study supersymmetric domain walls in N=1 supergravity theories, including those with modular-invariant superpotentials arising in superstring compactifications. Such domain walls are shown to saturate the Bogomol'nyi bound of wall energy per unit area.
Abraham   +51 more
core   +1 more source

Type I Vacua from Diagonal $Z_3$-Orbifolds [PDF]

open access: yes, 1999
We discuss the open descendants of diagonal irrational $Z_3$ orbifolds, starting from the $c=2$ case and analyzing six-dimensional and four-dimensional models.
Angelantonj   +41 more
core   +2 more sources

The LVS parametric tadpole constraint

open access: yesJournal of High Energy Physics, 2022
The large volume scenario (LVS) for de Sitter compactifications of the type IIB string is, at least in principle, well protected from various unknown corrections. The reason is that, by construction, the Calabi-Yau volume is exponentially large. However,
Xin Gao   +3 more
doaj   +1 more source

M-Theory (the Theory Formerly Known as Strings) [PDF]

open access: yes, 1996
Superunification underwent a major paradigm shift in 1984 when eleven-dimensional supergravity was knocked off its pedestal by ten-dimensional superstrings.
Duff, M. J.
core   +4 more sources

Inflation with a graceful exit in a random landscape

open access: yesJournal of High Energy Physics, 2017
We develop a stochastic description of small-field inflationary histories with a graceful exit in a random potential whose Hessian is a Gaussian random matrix as a model of the unstructured part of the string landscape.
F. G. Pedro, A. Westphal
doaj   +1 more source

Generalised Penrose Limits and PP-Waves

open access: yes, 2004
In this paper we construct generalised Penrose limits for the solutions of massive type IIA supergravity. We consider a Freund-Rubin type solution and apply these {\it massive} Penrose limits and obtain supersymmetric pp-wave which is a standard type IIA
Aharony   +55 more
core   +1 more source

N=1 supersymmetric SU(4)xSU(2)LxSU(2)R effective theory from the weakly coupled heterotic superstring [PDF]

open access: yes, 1999
In the context of the free-fermionic formulation of the heterotic superstring, we construct a three generation N=1 supersymmetric SU(4)xSU(2)LxSU(2)R model supplemented by an SU(8) hidden gauge symmetry and five Abelian factors.
Aldazabal   +60 more
core   +2 more sources

dS vacua and the swampland

open access: yesJournal of High Energy Physics, 2019
In this note we revisit some of the recent 10d and 4d arguments suggesting that the uplifting of supersymmetric AdS vacua leads to a flattening of the potential, preventing the formation of dS vacua.
Renata Kallosh   +3 more
doaj   +1 more source

New de Sitter solutions of 10d type IIB supergravity

open access: yesJournal of High Energy Physics, 2020
We find and study 17 new de Sitter solutions of ten-dimensional (10d) type IIB supergravity with intersecting D 5-branes and orientifold O 5-planes, as well as a new Minkowski one.
David Andriot   +2 more
doaj   +1 more source

Branes in Anti de Sitter Space-Time [PDF]

open access: yes, 1998
An intense study of the relationship between certain quantum theories of gravity realized on curved backgrounds and suitable gauge theories, has been originated by a remarkable conjecture put forward by Maldacena almost one year ago.
Trigiante, M.
core   +2 more sources

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