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We present a new approach to obtaining the scaling behavior of theentanglement entropy in fractional quantum Hall states from finite-sizewavefunctions. By employing the torus geometry and the fact that the torusaspect ratio can be readily varied, we can extract the entanglement entropy ofa spatial block as a continuous function of the block boundary. This approachallows us to extract the topological entanglement entropy with an accuracysuperior to what is possible on the spherical or disc geometry, where nonatural continuously variable parameter is available. Other than thetopological information, the study of entanglement scaling is also useful as anindicator of the difficulty posed by fractional quantum Hall states for variousnumerical techniques.

Entanglement Scaling of Fractional Quantum Hall states through Geometric Deformations