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- University of DelhiIN62 papers
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12 papers · 1 filter
A torsion-free background solution of the string theory
Eun Kyung Park, Pyung Seong Kwon
We find a background solution of the string theory which has a special property distinguished from the usual background solutions. This background solution does not produce the NS-…
Accelerating internal dimensions and nonzero positive cosmological constant
Eun Kyung Park, Pyung Seong Kwon
We present a new scenario for the moduli stabilization with a very small but nonzero positive cosmological constant . In this scenario the complex structure moduli are still sta…
Towards the core of the cosmological constant problem
Eun Kyung Park, Pyung Seong Kwon
We apply a new self-tuning mechanism to the well-known Kachru-Kallosh-Linde-Trivedi (KKLT) model to address the cosmological constant problem. In this mechanism the cosmological co…
Remark on Calabi-Yau vacua of the string theory and the cosmological constant problem
Eun Kyung Park, Pyung Seong Kwon
We propose, based on the viewpoint that our three-dimensional space is a stack of BPS D3-branes located at the conifold singularity of the Calabi-Yau three-fold, a new mechanism to…
Inflation driven by single geometric tachyon with D-brane orbiting around NS5-branes
Pyung Seong Kwon, Gyeong Yun Jun, Kamal L. Panigrahi +1
We investigate models in which inflation is driven by a single geometrical tachyon. We assume that the D-brane as a probe brane in the background of NS5-branes has non-zero angular…
NS-branes in 5d brane world models
Eun Kyung Park, Pyung Seong Kwon
We study codimension-1 brane solutions of the 5d brane world models compactified on . In string theoretical setup they suggest that the background branes locate…