Zobrazeno 1 - 10
of 154
pro vyhledávání: '"Rizos, John"'
Autor:
Florakis, Ioannis, Rizos, John
This chapter is an introduction to the Free Fermionic Formulation of String Theory, with emphasis on heterotic model building. After a brief review of bosonization in two dimensional conformal field theories, we discuss how internal bosonic string co
Externí odkaz:
http://arxiv.org/abs/2407.07034
Autor:
Florakis, Ioannis, Rizos, John
We systematically develop the explicit map between string vacua constructed in the Free Fermionic Formulation and their $\mathbb{Z}_2^N$ toroidal orbifold counterparts. We illustrate the map in various example classes of models, including cases relev
Externí odkaz:
http://arxiv.org/abs/2310.10438
We explore for the first time the direct construction of string models on quantum annealers, and investigate their efficiency and effectiveness in the model discovery process. Through a thorough comparison with traditional methods such as simulated a
Externí odkaz:
http://arxiv.org/abs/2306.16801
We derive the conditions for the one-loop contribution to the cosmological constant to be exponentially suppressed in a class of heterotic string compactifications with three generations of chiral matter, where supersymmetry is spontaneously broken \
Externí odkaz:
http://arxiv.org/abs/2206.09732
In a recent paper, we identified a cosmological sector of a flipped $SU(5)$ model derived in the free fermionic formulation of the heterotic superstring, containing the inflaton and the goldstino superfields with a superpotential leading to Starobins
Externí odkaz:
http://arxiv.org/abs/2112.01211
We construct and classify heterotic models where $\mathcal N=1$ supersymmetry is spontaneously broken \`a la Scherk-Schwarz. The theories contain chiral matter transforming under an observable Pati-Salam gauge symmetry and are classified according to
Externí odkaz:
http://arxiv.org/abs/2110.06752
Publikováno v:
JCAP03(2021)017
We study the cosmology of a string derived supersymmetric flipped $SU(5)$ model in the context of free-fermionic heterotic constructions that allow full calculability of the effective supergravity in perturbation theory around the fermionic vacuum wh
Externí odkaz:
http://arxiv.org/abs/2011.09396
Publikováno v:
Nucl.Phys. B953 (2020) 114969
Classification of Left-Right Symmetric (LRS) heterotic-string vacua in the free fermionic formulation, using random generation of generalised GSO (GGSO) projection coefficients, produced phenomenologically viable models with probability $4\times 10^{
Externí odkaz:
http://arxiv.org/abs/1912.04768
Systematic classification of Z2xZ2 orbifold compactifications of the heterotic-string was pursued by using its free fermion formulation. The method entails random generation of string vacua and analysis of their entire spectra, and led to discovery o
Externí odkaz:
http://arxiv.org/abs/1901.04448
Publikováno v:
Nucl.Phys. B936 (2018) 472-500
The classification method of the free fermionic heterotic string vacua is extended to models where the $SO(10)$ GUT symmetry is broken directly at the string scale to the Left-Right Symmetric subgroup. Our method involves using a fixed set of basis v
Externí odkaz:
http://arxiv.org/abs/1806.04434