Observational Signatures and Non-Gaussianities of General Single Field Inflation

Observational Tests of Instanton Cosmology

Observational Tests to Discern the Topology of Planckian Space-Time

Observations on Integral and Continuous U-duality Orbits in N=8 Supergravity

Observations on non-commutative field theories in coordinate space

Observations on noncommuting coordinates and on fields depending on them

Observations on Open and Closed String Scattering Amplitudes at High Energies

Observations on spacetime symmetry and non-commutativity

Observations on the Darboux coordinates for rigid special geometry

Observations on the Holographic Duals of 4-D Extremal Black Holes

Observations On The Moduli Space Of Two Dimensional String Theory

Observations on the Space of Four Dimensional String and $M$ theory Vacua

Observations on the Topological Structure in 2d Gravity Coupled to Minimal Matter

Observe the open universe in the sky?

Observer dependent D-brane for strings propagating in pp-wave time dependent background

Observer-independent quanta of mass and length

Observers and Measurements in Noncommutative Spacetimes

Observing 4D Baby Universes in Quantum Gravity

Observing an open FRW de Sitter universe living in a Minkowski spacetime

Observing Brane Inflation