Abstract

Quantum melting of two-dimensional (2D) striped domain wall arrays are investigated at zero temperature. It is revealed that the stripes with short-range interactions melt and become a stripe liquid in low density due to dislocations created by quantum fluctuation. This quantum melting transition is of second order and in the 3D XY universality class. Quantum melting in the presence of long-range interactions that fall off as power laws is also studied. This result is applied to incommensurate domain walls in 2D adsorbed atoms on substrate and doped antiferromagnets.

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