activity
20102026
most citedLefschetz-thimble analysis of the sign problem in one-site fermion model

93 citations · 667 across the 57 of their papers we have counts for

collaborators
Showing 2021Show all

5 papers · 1 filter

hep-lat2021

Lattice Lindblad simulation

Tomoya Hayata, Yoshimasa Hidaka, Arata Yamamoto

We perform the real-time lattice simulation of an open quantum system, which is based on the Schwinger-Keldysh path integral representation of the Lindblad formalism. Although the…

cond-mat.quant-gas2021★ 2 cited

Dissipation-induced dynamical phase transition in postselected quantum trajectories

Tomoya Hayata, Yoshimasa Hidaka, Arata Yamamoto

It is known that effects of dissipation or measurement backreaction in postselected quantum trajectories are described by non-Hermitian Hamiltonian, but their consequences in real-…

quant-ph2021★ 1 cited

Lindblad evolution without the sign problem

Tomoya Hayata

Quantum Monte Carlo is one of the most powerful numerical tools for studying nonpeturbative properties of quantum many-body systems. However, its application to real-time problems…

cond-mat.str-el2021★ 15 cited

Non-Hermitian Hubbard model without the sign problem

Tomoya Hayata, Arata Yamamoto

We study the Hubbard model with non-Hermitian asymmetric hopping terms. The conjugate hopping terms are introduced for two spin components so that the negative sign is canceled out…

quant-ph2021★ 23 cited

Diagnosis of information scrambling from Hamiltonian evolution under decoherence

Tomoya Hayata, Yoshimasa Hidaka, Yuta Kikuchi

We apply a quantum teleportation protocol based on the Hayden-Preskill thought experiment to quantify how scrambling a given quantum evolution is. It has an advantage over the dire…