Arun was a student of the European Doctorate in Law and Economics program from October 2011 until March 2015. He received his PHD from three universities (joint degree): Erasmus University Rotterdam, The Netherlands, University of Bologna, Italy and University of Hamburg, Germany. He obtained his B.A degree in Business Economics from University of Delhi in 2007. He completed his M.A degree in Economics from Jawaharlal Nehru University, Delhi in 2009 and an M.Phil degree in Development Economics from Indira Gandhi Institute of Development Research, Mumbai in 2011.