Zobrazeno 1 - 10
of 191
pro vyhledávání: '"Yoshinobu Kuramashi"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-20 (2024)
Abstract We investigate the phase structure of the (1+1)-dimensional U(1) gauge-Higgs model with a θ term, where the U(1) gauge action is constructed with Lüscher’s admissibility condition. Using the tensor renormalization group, both the complex
Externí odkaz:
https://doaj.org/article/80d58c2af3e54cdfac0a52055588043d
Autor:
Xiao Luo, Yoshinobu Kuramashi
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-14 (2024)
Abstract We investigate the entanglement and Rényi entropies for the (1+1)-dimensional O(3) nonlinear sigma model using the tensor renormalization group method. The central charge is determined from the asymptotic scaling properties of both entropie
Externí odkaz:
https://doaj.org/article/3d69a10e7a8049aa8186f78a8950529a
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-16 (2023)
Abstract The critical endpoint of the (3+1)-dimensional ℤ3 gauge-Higgs model at finite density is determined by the tensor renormalization group method. This work is an extension of the previous one on the ℤ2 model. The vital difference between t
Externí odkaz:
https://doaj.org/article/19413ff399a8446eb5a62a88775fe2b3
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 5, Pp 1-20 (2022)
Abstract We investigate the critical endpoints of the (3+1)-dimensional ℤ2 gauge-Higgs model at finite density together with the (2+1)-dimensional one at zero density as a benchmark using the tensor renormalization group method. We focus on the pha
Externí odkaz:
https://doaj.org/article/8ef45e7af77340d1911a298e7d634bc4
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-17 (2021)
Abstract We analyze the chiral phase transition of the Nambu-Jona-Lasinio model in the cold and dense region on the lattice, developing the Grassmann version of the anisotropic tensor renormalization group algorithm. The model is formulated with the
Externí odkaz:
https://doaj.org/article/53b8b5dcfded4b05b019d07e42450a54
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 9, Pp 1-11 (2020)
Abstract Tensor network is an attractive approach to the field theory with negative sign problem. The complex ϕ 4 theory at finite density is a test bed for numerical algorithms to verify their effectiveness. The model shows a characteristic feature
Externí odkaz:
https://doaj.org/article/8e8b75ee5d154702844757cd2a493193
Autor:
Yoshinobu Kuramashi, Yusuke Yoshimura
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-11 (2020)
Abstract We make an analysis of the two-dimensional U(1) lattice gauge theory with a θ term by using the tensor renormalization group. Our numerical result for the free energy shows good consistency with the exact one at finite coupling constant. Th
Externí odkaz:
https://doaj.org/article/a1822dddc1b441ccb9fb5fad8daab997
Autor:
Daisuke Kadoh, Yoshinobu Kuramashi, Yoshifumi Nakamura, Ryo Sakai, Shinji Takeda, Yusuke Yoshimura
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 2, Pp 1-16 (2020)
Abstract We study the two-dimensional complex ϕ 4 theory at finite chemical potential using the tensor renormalization group. This model exhibits the Silver Blaze phenomenon in which bulk observables are independent of the chemical potential below t
Externí odkaz:
https://doaj.org/article/30fd50f9bf4a47bca41d1f0948310de6
Autor:
Yoshinobu Kuramashi, Yusuke Yoshimura
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-13 (2019)
Abstract We apply a tensor network scheme to finite temperature Z2 gauge theory in 2+1 dimensions. Finite size scaling analysis with the spatial extension up to N σ = 4096 at the temporal extension of N τ = 2, 3, 5 allows us to determine the transi
Externí odkaz:
https://doaj.org/article/39454e7820774b54a3dafd11a9187566
Autor:
Daisuke Kadoh, Yoshinobu Kuramashi, Yoshifumi Nakamura, Ryo Sakai, Shinji Takeda, Yusuke Yoshimura
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 5, Pp 1-22 (2019)
Abstract We make a detailed analysis of the spontaneous Z 2-symmetry breaking in the two dimensional real ϕ 4 theory with the tensor renormalization group approach, which allows us to take the thermodynamic limit easily and determine the physical ob
Externí odkaz:
https://doaj.org/article/6c7e529b532147479406348a0396e540