Zobrazeno 1 - 10
of 674
pro vyhledávání: '"JUN NISHIMURA"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-30 (2024)
Abstract The generalized Lefschetz thimble method is a promising approach that attempts to solve the sign problem in Monte Carlo methods by deforming the integration contour using the flow equation. Here we point out a general problem that occurs due
Externí odkaz:
https://doaj.org/article/e3a0eed0b72f46fb85ed2dd320004d2e
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-32 (2023)
Abstract We propose a new technique to incorporate multiple fermion flavors in the tensor renormalization group method for lattice gauge theories, where fermions are treated by the Grassmann tensor network formalism. The basic idea is to separate the
Externí odkaz:
https://doaj.org/article/f14f66cc83fe4e898652e229568bef63
Autor:
Yuhma Asano, Jun Nishimura
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-22 (2023)
Abstract The dynamics of zero modes in gauge theory is highly nontrivial due to its nonperturbative nature even in the case where the other modes can be treated perturbatively. One of the related issues concerns the possible instability of the trivia
Externí odkaz:
https://doaj.org/article/8e12e5355d1d4f108a3ea7bbebcc686e
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 9, Pp 1-34 (2023)
Abstract It is well known that quantum tunneling can be described by instantons in the imaginary-time path integral formalism. However, its description in the real-time path integral formalism has been elusive. Here we establish a statement that quan
Externí odkaz:
https://doaj.org/article/fbbd2471ff1b48d3beb00abc353871a0
Autor:
Takeru Yokota, Yuta Ito, Hideo Matsufuru, Yusuke Namekawa, Jun Nishimura, Asato Tsuchiya, Shoichiro Tsutsui
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-30 (2023)
Abstract We investigate color superconductivity on the lattice using the gap equation for the Cooper pair condensate. The weak coupling analysis is justified by choosing the physical size of the lattice to be smaller than the QCD scale, while keeping
Externí odkaz:
https://doaj.org/article/81cb571cc485415291550b8881fba77d
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-27 (2022)
Abstract The Picard-Lefschetz theory has been attracting much attention as a tool to evaluate a multi-variable integral with a complex weight, which appears in various important problems in theoretical physics. The idea is to deform the integration c
Externí odkaz:
https://doaj.org/article/83702d3d60074b7dbfa978f01756f2b9
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-34 (2021)
Abstract The tensor renormalization group method is a promising approach to lattice field theories, which is free from the sign problem unlike standard Monte Carlo methods. One of the remaining issues is the application to gauge theories, which is so
Externí odkaz:
https://doaj.org/article/b088b65bbae542e1a6f27609f3eba429
Publikováno v:
BMC Infectious Diseases, Vol 21, Iss 1, Pp 1-13 (2021)
Abstract Background Hematology analyzers display abnormal parameters during malaria infection providing insightful information for suspecting and assessing malaria infection. The goal of this study is to demonstrate the potential of a three-part diff
Externí odkaz:
https://doaj.org/article/042c1301f4ef4e0b971fd31443b26f4d
Autor:
Yuta Ito, Hideo Matsufuru, Yusuke Namekawa, Jun Nishimura, Shinji Shimasaki, Asato Tsuchiya, Shoichiro Tsutsui
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-17 (2020)
Abstract We demonstrate that the complex Langevin method (CLM) enables calculations in QCD at finite density in a parameter regime in which conventional methods, such as the density of states method and the Taylor expansion method, are not applicable
Externí odkaz:
https://doaj.org/article/6d7fd950bcea45d29e57b70dcc869b23
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 9, Pp 1-41 (2020)
Abstract Monte Carlo simulation of gauge theories with a θ term is known to be extremely difficult due to the sign problem. Recently there has been major progress in solving this problem based on the idea of complexifying dynamical variables. Here w
Externí odkaz:
https://doaj.org/article/4de7ad7cc88643efb6aa77ec2f066272