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Hypermultiplets and Topological Strings
Martin Rocek, Cumrun Vafa, Stefan Vandoren
The c-map relates classical hypermultiplet moduli spaces in compactifications of type II strings on a Calabi-Yau threefold to vector multiplet moduli spaces via a further compactif…
Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology
Ali Nayeri, Robert H. Brandenberger, Cumrun Vafa
We study the generation of cosmological perturbations during the Hagedorn phase of string gas cosmology. Using tools of string thermodynamics we provide indications that it may be…
Dimer Models from Mirror Symmetry and Quivering Amoebae
Bo Feng, Yang-Hui He, Kristian D. Kennaway +1
Dimer models are 2-dimensional combinatorial systems that have been shown to encode the gauge groups, matter content and tree-level superpotential of the world-volume quiver gauge…
The String Landscape and the Swampland
Cumrun Vafa
Recent developments in string theory suggest that string theory landscape of vacua is vast. It is natural to ask if this landscape is as vast as allowed by consistent-looking effec…
The Entropic Principle and Asymptotic Freedom
Sergei Gukov, Kirill Saraikin, Cumrun Vafa
Motivated by the recent developments about the Hartle-Hawking wave function associated to black holes, we formulate an entropy functional on the moduli space of Calabi-Yau compacti…
A Stringy Wave Function for an S^3 Cosmology
Sergei Gukov, Kirill Saraikin, Cumrun Vafa
Using the recent observations of the relation between Hartle-Hawking wave function and topological string partition function, we propose a wave function for scalar metric fluctuati…