182 citations · 2.2k across the 82 of their papers we have counts for
82 papers
Towards Wedge Construction of Four-Dimensional Non-Supersymmetric Theories and Torsion Classes
Keshav Dasgupta, Radu Tatar
Motivated by recent proposals relating non-supersymmetric Type 0A theory to M-theory compactified on a singular wedge geometry, we study an M-theory compactification on a seven-man…
Transient de Sitter and Quasi de Sitter States in SO(32) and E_8 x E_8 Heterotic String Theories
Keshav Dasgupta, Suddhasattwa Brahma, Bohdan Kulinich +3
One of the long-standing puzzles in string theory has been on the existence of a four-dimensional de Sitter and quasi de Sitter configurations, the latter being defined with a temp…
de Sitter Excited State in Heterotic E_8 x E_8 Theory
Suddhasattwa Brahma, Keshav Dasgupta, Bohdan Kulinich +3
We devise a novel duality sequence to study late-time cosmology in the heterotic E_8 x E_8 setup of Horava and Witten with dynamical walls that are moving towards each other. Surpr…
Two Dimensional (0,2) Theories and Resolved singularities
Yizhuo Gao, Radu Tatar
We study (0,2) two-dimensional theories in type IIB configurations with D5 branes wrapping blow-up cycles of deformed resolutions for singularities or in T-dual…
Coherent States in M-Theory: A Brane Scan using the Taub-NUT
Joydeep Chakravarty, Keshav Dasgupta, Diksha Jain +3
The Taub-NUT geometry corresponds to the Kaluza-Klein monopole solution of M-theory and on dimension reduction along the Taub-NUT circle direction it becomes the D6 brane of type I…
de Sitter State in Heterotic String Theory
Stephon Alexander, Keshav Dasgupta, Archana Maji +2
Recent no-go theorems have ruled out four-dimensional classical de Sitter vacua in heterotic string theory. On the other hand, the absence of a well-defined Wilsonian effective act…