Imposing T-duality in the renormalisation process of entanglement entropy
leads to new relations between entanglement entropy counter-terms. T-duality is
made explicit by means of the generalised metric of double field theory in the
context of bulk-boundary duality. Double field theory in the bulk naturally
provides the new relations between higher order quantum corrections to
entanglement entropy as well as a systematic approach to understanding
entanglement entropy renormalisation counter-terms. An analogue for
Slavnov-Taylor identities for T-dual counter-terms of entanglement entropy is
envisaged
