Browsing Theoretical Physics by Author "Ramgoolam, S"
Now showing items 1-10 of 10
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Chiral Ring Generating Functions & Branches of Moduli Space
McGrane, J; Ramgoolam, S; Wecht, BWe consider the worldvolume theory of N D3-branes transverse to various non-compact Calabi-Yau spaces, and describe subtleties in the counting of chiral primary operators in such theories due to the presence of multiple ... -
Counting Tensor Model Observables and Branched Covers of the 2-Sphere
Geloun, JB; Ramgoolam, S (2014-02-04)Lattice gauge theories of permutation groups with a simple topological action (henceforth permutation-TFTs) have recently found several applications in the combinatorics of quantum field theories (QFTs). They have been ... -
Finite N effects on the collapse of fuzzy spheres
McNamara, S; Papageorgakis, C; Ramgoolam, S; Spence, WJ (2006-05) -
Flavour singlets in gauge theory as permutations
Kimura, Y; Ramgoolam, S; Suzuki, R (2016-12-28) -
Free field primaries in general dimensions: counting and construction with rings and modules
Koch, RDM; Ramgoolam, S (2018-08-16) -
From Matrix Models and quantum fields to Hurwitz space and the absolute Galois group
Koch, RDM; Ramgoolam, SWe show that correlators of the hermitian one-Matrix model with a general potential can be mapped to the counting of certain triples of permutations and hence to counting of holomorphic maps from world-sheet to sphere ... -
The geometry of the light-cone cell decomposition of moduli space
Garner, D; Ramgoolam, S (2015-11) -
Hidden classical symmetry in quantum spaces at roots of unity : From q-sphere to fuzzy sphere
Jevicki, A; Mihailescu, M; Ramgoolam, SWe study relations between different kinds of non-commutative spheres which have appeared in the context of ADS/CFT correspondences recently, emphasizing the connections between spaces that have manifest quantum group ... -
New Modular Hopf Algebras related to rational $k$ $\widehat {sl(2)}$
Ramgoolam, SWe show that the Hopf link invariants for an appropriate set of finite dimensional representations of $ U_q SL(2)$ are identical, up to overall normalisation, to the modular S matrix of Kac and Wakimoto for rational $k$ ... -
Stringy Spacetime Uncertainty as an Alternative to Inflation
Gu, J-A; Ho, P-M; Ramgoolam, SIn this paper we point out that the spacetime uncertainty relation proposed for string theory has strong cosmological implications that can solve the flatness problem and the horizon problem without the need of inflation. ...