The Economist quotes Bhuvnesh Jain in their recent science and technology article.
If the desi team’s results are right, it would mean a complete re-evaluation of what dark energy could be. "The moment [dark] energy changes in time, it is no longer vacuum energy," says Bhuvnesh Jain, a cosmologist at the University of Pennsylvania. Alternative proposals already exist, centring on a dark-energy field called quintessence, which pervades all space and can change with time. However, Dr Jain says, the desi results as they stand now indicate something more complex than the simplest quintessence models.