dc.contributor.author | Florakis, Ioannis G. | en |
dc.contributor.author | Kounnas, Costas | en |
dc.contributor.author | Partouche, Hervé | en |
dc.contributor.author | Toumbas, Nicolaos K. | en |
dc.creator | Florakis, Ioannis G. | en |
dc.creator | Kounnas, Costas | en |
dc.creator | Partouche, Hervé | en |
dc.creator | Toumbas, Nicolaos K. | en |
dc.date.accessioned | 2019-12-02T15:30:21Z | |
dc.date.available | 2019-12-02T15:30:21Z | |
dc.date.issued | 2011 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/58686 | |
dc.description.abstract | The existence of non-singular string cosmologies is established in a class of two-dimensional supersymmetric Hybrid models at finite temperature. The left-moving sector of the Hybrid models gives rise to 16 real (N4=4) spacetime supercharges as in the usual superstring models. The right-moving sector is non-supersymmetric at the massless level, but is characterized by MSDS symmetry, which ensures boson/fermion degeneracy of the right-moving massive levels. Finite temperature configurations, which are free of Hagedorn instabilities, are constructed in the presence of non-trivial "gravito-magnetic" fluxes. These fluxes inject non-trivial winding charge into the thermal vacuum and restore the thermal T-duality symmetry associated with the Euclidean time circle. Thanks to the unbroken right-moving MSDS symmetry, the one-loop string partition function is exactly calculable beyond any alpha | en |
dc.description.abstract | ́-approximation. At the self-dual point new massless thermal states appear, sourcing localized spacelike branes, which can be used to connect a contracting thermal Universe to an expanding one. The resulting bouncing cosmology is free of any curvature singularities and the string coupling remains perturbative throughout the cosmological evolution. © 2010 Elsevier B.V. | en |
dc.source | Nuclear Physics B | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-78049342919&doi=10.1016%2fj.nuclphysb.2010.10.026&partnerID=40&md5=0b13731f049153fd7c4549de706b8986 | |
dc.title | Non-singular string cosmology in a 2d hybrid model | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1016/j.nuclphysb.2010.10.026 | |
dc.description.volume | 844 | |
dc.description.issue | 1 | |
dc.description.startingpage | 89 | |
dc.description.endingpage | 114 | |
dc.author.faculty | Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Φυσικής / Department of Physics | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :24</p> | en |
dc.source.abbreviation | Nucl.Phys.B | en |
dc.contributor.orcid | Toumbas, Nicolaos K. [0000-0001-8879-7330] | |
dc.gnosis.orcid | 0000-0001-8879-7330 | |