Zobrazeno 1 - 10
of 1 017
pro vyhledávání: '"Mourad, J."'
We connect the indications of 2D CFT for branes in non-supersymmetric strings to actual spacetime profiles, taking the bulk tadpole potentials into account. We find exact solutions for the uncharged branes that spread in the internal intervals of Dud
Externí odkaz:
http://arxiv.org/abs/2406.16327
After recasting the standard charged and uncharged brane profiles in the harmonic gauge, we explore solutions with the same isometries where the potentials $V = T \,e^{\gamma\,\phi}$ of ten-dimensional non-supersymmetric strings are taken into accoun
Externí odkaz:
http://arxiv.org/abs/2406.14926
Autor:
Mourad, J., Sagnotti, A.
We recently proposed a class of type IIB vacua that yield, at low energies, four--dimensional Minkowski spaces with broken supersymmetry and a constant string coupling. They are compactifications with an internal five-torus bearing a five--form flux
Externí odkaz:
http://arxiv.org/abs/2309.05268
Autor:
Mourad, J., Sagnotti, A.
We recently constructed type-IIB compactifications to four dimensions depending on a single additional coordinate, where a five-form flux $\Phi$ on an internal torus leads to a constant string coupling. Supersymmetry is fully broken when the internal
Externí odkaz:
http://arxiv.org/abs/2309.04026
Autor:
Mourad, J., Sagnotti, A.
Internal intervals spanned by finite ranges of a conformal coordinate $z$ and terminating at a pair of singularities are a common feature of many string compactifications with broken supersymmetry. The squared masses emerging in lower-dimensional Min
Externí odkaz:
http://arxiv.org/abs/2305.09587
Autor:
Mourad, J., Sagnotti, A.
We consider the type-IIB supergravity vacua that include an internal $T^5$, depend on a single coordinate $r$ and respect a four-dimensional Poincar\'e symmetry, with the aim of highlighting low-energy spectra with broken supersymmetry and a bounded
Externí odkaz:
http://arxiv.org/abs/2206.03340
Autor:
Mourad, J., Sagnotti, A.
We investigate the effects of the leading tadpole potentials of 10D tachyon-free non-supersymmetric strings in warped products of flat geometries of the type M(p+1) x R x T(10-p-2) depending on a single coordinate. In the absence of fluxes and for p<
Externí odkaz:
http://arxiv.org/abs/2109.12328
Autor:
Mourad, J., Sagnotti, A.
We investigate in detail solutions of supergravity that involve warped products of flat geometries of the type M(p+1) x R x T(D-p-2) depending on a single coordinate. In the absence of fluxes, the solutions include flat space and Kasner-like vacua th
Externí odkaz:
http://arxiv.org/abs/2109.06852
Autor:
Mourad, J., Sagnotti, A.
We review the main results of our investigations motivated by the tadpole potentials of ten-dimensional strings with broken supersymmetry. While these are at best partial indications, it is hard to resist the feeling that they do capture some lessons
Externí odkaz:
http://arxiv.org/abs/2107.04064
Autor:
Mourad, J., Sagnotti, A.
We address some general issues related to torsion and Noether currents for Fermi fields in the presence of boundaries, with emphasis on the conditions that guarantee charge conservation. We also describe exact solutions of these boundary conditions a
Externí odkaz:
http://arxiv.org/abs/2002.05372