LAUSR

A bstractThe Romans’ type IIA supergravity allows fundamental strings to have explicit mass term at the tree level. We show that there exists a (F1,D2,D8) brane configuration which gives rise to Lif4(2) × R1 × S5 vacua supported by the massive strings. The presence of D8-branes naturally excites massive fundamental strings. A compactification on circle relates these Lifshitz massive type-IIA background with the axion-flux Lif4(2) × S1 × S5 vacua in ordinary type-IIB theory. The massive T-duality in eight dimensions further relates them to yet another Lif˜42×S1×S5$$ {\tilde{Lif}}_4^{(2)}\times {S}^1\times {S}^5 $$ vacua constituted by (F1,D0,D6) system in ordinary type IIA theory. The latter vacua after compactification to four dimensions generate two ‘distinct’ electric charges and a constant magnetic field, all living over 2-dimensional plane. This somewhat reminds us of a similar set up in quantum Hall systems.