N
Nicolaos Toumbas
Researcher at University of Cyprus
Publications - 18
Citations - 959
Nicolaos Toumbas is an academic researcher from University of Cyprus. The author has contributed to research in topics: String (physics) & String cosmology. The author has an hindex of 12, co-authored 18 publications receiving 920 citations. Previous affiliations of Nicolaos Toumbas include Harvard University.
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A matrix model dual of type 0B string theory in two dimensions
TL;DR: In this article, it was shown that the potential in the matrix model is symmetric with respect to the parity-like Z2 transformation of the matrix, and that the two sectors in the theory correspond to two classes of operators under the Z2 symmetry.
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Eight-dimensional quantum Hall effect and "octonions"
TL;DR: A generalization of the quantum Hall effect where particles move in an eight-dimensional space under an SO(8) gauge field is constructed, where two fundamentally different liquids with distinct configuration spaces can be constructed, depending on whether the particles carry spinor or vector SO( 8) quantum numbers.
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Flux backgrounds in 2D string theory
TL;DR: In this paper, the relation between the 0A matrix model and the extremal black hole in two dimensions was studied using T-duality and a dual flux background was constructed as an orbifold of the 0B background.
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Effective Field Theory Description of the Higher Dimensional Quantum Hall Liquid
TL;DR: In this article, the authors derived an effective topological field theory model of the four dimensional quantum Hall liquid state using a generalization of the flux attachment transformation, which can be formulated as a U
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${\cal R}^2$ inflation from scale invariant supergravity and anomaly free superstrings with fluxes
TL;DR: The scale invariant gravity theory coupled to conformally invariant matter is investigated in this paper, where it is shown that the conformally coupled scalars belong to an O(1, 1+n)/SO(1+n) manifold, while in the supersymmetric case the scalar manifold becomes isomorphic to the Kahlerian space.