English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We introduce a variational wavefunction for many-body ground states thatinvolves imaginary time evolution with two different Hamiltonians in analternating fashion with variable time intervals. We successfully apply theansatz on the one- and two-dimensional transverse-field Ising model andsystematically study its scaling for the one-dimensional model at criticality.We find the total imaginary time required scales logarithmically with systemsize, in contrast to the linear scaling in conventional Quantum Monte Carlo. Wesuggest this is due to unique dynamics permitted by alternating imaginary timeevolution, including the exponential growth of bipartite entanglement. Forgeneric models, the superior scaling of our ansatz potentially mitigates thenegative sign problem at the expense of having to optimize variationalparameters.

Making Trotters Sprint: A Variational Imaginary Time Ansatz for Quantum Many-body Systems