Small Matrix Path Integral with Extended Memory

Research output: Contribution to journalArticlepeer-review


The small matrix decomposition of the path integral (SMatPI) for a discrete system coupled to a harmonic bath expresses the reduced density matrix in terms of matrices whose size is given by the number of states comprising the system, circumventing the large storage requirements of iterative tensor-based algorithms. The present work extends the SMatPI methodology to account for residual memory that exceeds the entanglement length without an increase in computational effort.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of Chemical Theory and Computation
Issue number1
StatePublished - Jan 12 2021

ASJC Scopus subject areas

  • Computer Science Applications
  • Physical and Theoretical Chemistry


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