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Experimental signatures of Majorana zero modes in a single superconductingquantum wire with spin-orbit coupling have been reported as zero bias peaks inthe tunneling spectroscopy. We study whether these zero modes can persist in anarray of coupled wires, and if not, what their remnant could be. The bulkexhibits topologically distinct gapped phases and an intervening gapless phase.Even though the bulk pairing structure is topological, the interaction betweenMajorana zero modes and superfluid phases leads to spontaneous time-reversalsymmetry breaking. Consequently, edge supercurrent loops emerge and edgeMajorana fermions are in general gapped out except when the number of chains isodd, in which case one Majorana fermion survives.

The fate and heir of Majorana zero modes in a quantum wire array