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MesoHOPS is a formally exact trajectory based approach for solving the time evolution of open quantum systems coupled to non-Markovian thermal environments. MesoHOPS extends the Hierarchy Of Pure States (HOPS) formalism to leverage the dynamic localization present in the wave functions and construct an adaptive basis. Using the adaptive basis MesoHOPS is able to be computationally tractable with large system sizes.
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
-Tim Peters, 1999