93 citations · 667 across the 57 of their papers we have counts for
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Quantum anomaly for benchmarking quantum computing
Tomoya Hayata, Arata Yamamoto
Given the rapid advances in quantum computing hardware, establishing strategies for verifying the correctness of quantum computations has become increasingly important. Exploiting…
Onset of thermalization of q-deformed SU(2) Yang-Mills theory on a trapped-ion quantum computer
Tomoya Hayata, Yoshimasa Hidaka, Yuta Kikuchi
Nonequilibrium dynamics of quantum many-body systems is one of the main targets of quantum simulations. This focus - together with rapid advances in quantum-computing hardware - ha…
Phases of the -deformed Yang-Mills theory at large
Tomoya Hayata, Yoshimasa Hidaka, Hiromasa Watanabe
We investigate the -dimensional -deformed Yang-Mills theory in the lattice Hamiltonian formalism, which is characterized by three parameters: the numbe…
Floquet evolution of the q-deformed \texorpdfstring{SU(3)}{SU(3)1} Yang-Mills theory on a two-leg ladder
Tomoya Hayata, Yoshimasa Hidaka
We simulate Floquet time-evolution of a truncated SU(3) lattice Yang-Mills theory on a two-leg ladder geometry under open boundary conditions using IBM's superconducting 156-qubit…
Floquet prethermalization of lattice gauge theory on superconducting qubits
Tomoya Hayata, Kazuhiro Seki, Arata Yamamoto
Simulating nonequilibirum dynamics of a quantum many-body system is one of the promising applications of quantum computing. We simulate the time evolution of one-dimensional ${\bf…
Dense with matrix product states
Tomoya Hayata, Yoshimasa Hidaka, Kentaro Nishimura
We study one-flavor and lattice QCD in () dimensions at zero temperature and finite density using matrix product states and the density matri…
Chiral fermion on quantum computers
Arata Yamamoto, Tomoya Hayata, Katsumasa Nakayama
Quantum computation often suffers from artificial symmetry breaking. We should strive to suppress the artifact both by theoretical and technological improvements. The theoretical f…
Dynamical chirality production in one dimension
Tomoya Hayata, Katsumasa Nakayama, Arata Yamamoto
We discuss the quantum computation of dynamical chirality production in lattice gauge theory. Although the chirality of a lattice fermion is complicated in general dimensions, it c…
deformed formulation of Hamiltonian SU(3) Yang-Mills theory
Tomoya Hayata, Yoshimasa Hidaka
We study Yang-Mills theory in dimensions based on networks of Wilson lines. With the help of the deformation, networks respect the (discretized) $\math…
Chiral fermion in the Hamiltonian lattice gauge theory
Tomoya Hayata, Katsumasa Nakayama, Arata Yamamoto
We discuss the chiral fermion in the Hamiltonian formalism of lattice gauge theory. Although the naive chiral charge operator does not commute with the Hamiltonian, the commutable…
String-net formulation of Hamiltonian lattice Yang-Mills theories and quantum many-body scars in a nonabelian gauge theory
Tomoya Hayata, Yoshimasa Hidaka
We study the Hamiltonian lattice Yang-Mills theory based on spin networks that provide a useful basis to represent the physical states satisfying the Gauss law constraints. We focu…
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…
Thermalization of Yang-Mills theory in a dimensional small lattice system
Tomoya Hayata, Yoshimasa Hidaka
We study the real-time evolution of SU() Yang-Mills theory in a dimensional small lattice system after interaction quench. We numerically solve the Schr{ö}dinger equatio…
String confinement in 2-form lattice gauge theory
Tomoya Hayata, Arata Yamamoto
We study the confinement between vortex strings in the dual lattice gauge theory of the abelian Higgs model. The dual lattice gauge theory is described by a 2-form gauge field. We…
Lattice simulation with the Majorana positivity
Arata Yamamoto, Tomoya Hayata
While the sign problem of the Dirac fermion is conditioned by the semi-positivity of a determinant, that of the Majorana fermion is conditioned by the semi-positivity of a Pfaffian…
Classification of sign-problem-free relativistic fermions on the basis of the Majorana positivity
Tomoya Hayata, Arata Yamamoto
We classify the sign-problem-free relativistic fermion actions on the basis of the Majorana representation. In the Majorana representation, the sign-problem-free condition is given…
Lefschetz-thimble approach to the Silver Blaze problem of one-site fermion model
Yuya Tanizaki, Yoshimasa Hidaka, Tomoya Hayata
The sign problem of finite-density QCD at the zero temperature becomes very severe if the quark chemical potential exceeds half of the pion mass. In order to understand its propert…
Complex saddle points and the sign problem in complex Langevin simulation
Tomoya Hayata, Yoshimasa Hidaka, Yuya Tanizaki
We show that complex Langevin simulation converges to a wrong result, by relating it to the Lefschetz-thimble path integral, when the path-integral weight has different phases amon…
Complex Langevin simulation in condensed matter physics
Arata Yamamoto, Tomoya Hayata
The complex Langevin method is one hopeful candidate to tackle the sign problem. This method is applicable not only to QCD but also to nonrelativistic field theory, such as condens…