<i>Zitterbewegung</i> of Moiré Excitons in Twisted <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>MoS</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mrow><mml:mi>WSe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> Heterobilayers

The moir\'e pattern observed in stacked non-commensurate crystal lattices, such as hetero-bilayers of transition metal dichalcogenides, produces a periodic modulation their bandgap. Excitons subjected to this potential landscape exhibit band structure that gives rise quasi-particle dubbed exciton. In the case MoS$_2$/WSe$_2$ hetero-bilayers, trapping has honeycomb symmetry and, consequently, exciton is same Dirac-Weyl fermion, whose mass can be further tuned down zero with perpendicularly applied field. Here we show that, analogously other Dirac-like particles, exhibits trembling motion, also known zitterbewegung, long timescales are compatible current experimental techniques for dynamics. This promotes study dynamics excitons van der Waals heterostructures an advantageous solid-state platform probe broadly tunable by gating and inter-layer twist angle.