133 citations · 376 across the 21 of their papers we have counts for
5 papers · 1 filter
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…
Wheeler-De Witt equation and the Canonical Construction of the Glauber-Sudarshan States in Quantum Gravity
Keshav Dasgupta, Fang-Yi Guo, Bohdan Kulinich
Quantum gravity is fundamentally different from the non-gravitational quantum field theories in the sense that most of the techniques derived for the latter cannot be easily extend…
Collective field theory of gauged multi-matrix models: Integrating out off-diagonal strings
Suddhasattwa Brahma, Robert Brandenberger, Keshav Dasgupta +2
We study a two-matrix toy model with a BFSS-like interaction term using the collective field formalism. The main technical simplification is obtained by gauge-fixing first, and int…
Glauber-Sudarshan States, Wave Functional of the Universe and the Wheeler-De Witt equation
Suddhasattwa Brahma, Keshav Dasgupta, Fangyi Guo +1
One of the pertinent question in the analysis of de Sitter as an excited state is what happens to the Glauber-Sudarshan states that are off-shell, i.e. the states that do not satis…
What if string theory has a de Sitter excited state?
Joydeep Chakravarty, Keshav Dasgupta
We propose precise effective field theory criteria to obtain a four-dimensional de Sitter space within M-theory. To this effect, starting with the state space described by the acti…