Ashoke Sen

Sen’s Sen conjecture on the decay of unstable D-branes through open string tachyon condensation became a cornerstone in string cosmology and field theory.

He was born in Kolkata in 1956 to a physics professor father, Anil Kumar Sen, grounding his early life in an academic environment steeped in scientific inquiry.

Sen introduced the entropy function formalism, providing a statistical interpretation of black hole entropy in string theory, a key insight into quantum gravity.

Ashoke Sen’s introduction of S-duality reshaped string theory, turning five isolated models into a single unified framework, which has redirected theoretical physics research worldwide. His work helped establish institutions like HRI and ICTS as significant centers for cutting-edge physics in India, elevating the country’s global scientific stature. Sen’s mentorship and positions at Indian and international institutes have strengthened India’s role in fundamental physics research.