Results 41 to 50 of about 9,349 (162)
The Exact MSSM Spectrum from String Theory [PDF]
, 2005 We show the existence of realistic vacua in string theory whose observable sector has exactly the matter content of the MSSM. This is achieved by compactifying the E_8 x E_8 heterotic superstring on a smooth Calabi-Yau threefold with an SU(4) gauge ...
+33 more
core +3 more sources
On the stability of string theory vacua
Journal of High Energy Physics, 2022 Vacuum compactifications may suffer from instabilities under small perturbations or tunnel effects; both are difficult to analyze. In this paper we consider the issue from a higher-dimensional perspective.
Suvendu Giri +2 more
doaj +1 more source
Supersymmetry preserving and breaking degenerate vacua, and radiative moduli stabilization [PDF]
, 2017 We propose a new type of moduli stabilization scenario where the supersymmetric and supersymmetry-breaking minima are degenerate at the leading level. The inclusion of the loop-corrections originating from the matter fields resolves this degeneracy of ...
Kobayashi, Tatsuo +3 more
core +2 more sources
On supersymmetric AdS4 orientifold vacua
Journal of High Energy Physics, 2020 In this work we study ten-dimensional solutions to type IIA string theory of the form AdS4 × X 6 which contain orientifold planes and preserve N $$ \mathcal{N} $$ = 1 supersymmetry.
Fernando Marchesano +3 more
doaj +1 more source
de-Sitter vacua via consistent D-terms [PDF]
, 2005 We introduce a new mechanism for producing locally stable de-Sitter or Minkowski vacua, with spontaneously broken N=1 supersymmetry and no massless scalars, applicable to superstring and M-theory compactifications with fluxes. We illustrate the mechanism
Fabio Zwirner +3 more
core +2 more sources
String Theory - From Physics to Metaphysics [PDF]
, 2006 Currently, string theory represents the only advanced approach to a unification of all interactions, including gravity. In spite of the more than thirty years of its existence it did not make any empirically testable predictions.
Hedrich, Reiner
core +3 more sources
, 1995 We present dyonic multi-membrane solutions of the N=2 D=8 supergravity theory that serves as the effective field theory of the $T^2$-compactified type II superstring theory.
Duff +25 more
core +2 more sources
Superstring Vacua of 4-dimensional PP-Waves with Enhanced Supersymmetry [PDF]
Journal of High Energy Physics, 2002 We study the superstring vacua constructed from the conformal field theories of the type H_4 x M, where H_4 denotes the super Nappi-Witten model (super WZW model on the 4-dimensional Heisenberg group H_4) and M denotes an arbitrary N=2 rational superconformal field theory with c=9.
Hikida, Yasuaki, Sugawara, Yuji
openaire +2 more sources
de Sitter vacua from ten dimensions
Journal of High Energy Physics, 2021 We analyze the de Sitter construction of [1] using ten-dimensional supergravity, finding exact agreement with the four-dimensional effective theory. Starting from the fermionic couplings in the D7-brane action, we derive the ten-dimensional stress-energy
Shamit Kachru +3 more
doaj +1 more source
Stable non-supersymmetric vacua in the moduli space of non-critical superstrings [PDF]
Nuclear Physics B, 2006 We study a set of asymmetric deformations of non-critical superstring theories in various dimensions. The deformations arise as Kaehler and complex structure deformations of an orthogonal two-torus comprising of a parallel and a transverse direction in the near-horizon geometry of NS5-branes.
Harmark, Troels +2 more
openaire +2 more sources