Geoffrey Herman is a researcher at the Mandel Scholion Interdisciplinary Research Center in the Humanities and Jewish Studies at the Hebrew University of Jerusalem. He has published extensively on the history of religious life in the Sasanian era. Among his publications are A Prince without a Kingdom: The Exilarch in the Sasanian Era (Mohr Siebeck, 2012) and Jews, Christians and Zoroastrians: Religious Dynamics in a Sasanian Context (Gorgias Press, 2014).