Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Tada, Yasuhiro"'
Autor:
Yokoyama, Takayuki, Tada, Yasuhiro
Fictitious magnetic fields can be introduced in quantum magnets by the strain engineering and the Aharonov-Casher effect. Here, we study impacts of a uniform fictitious magnetic field and corresponding Landau quantization on the Neel order in the $S=
Externí odkaz:
http://arxiv.org/abs/2412.01435
Autor:
Tada, Yasuhiro
Publikováno v:
Phys. Rev. B 110, 045113 (2024)
We discuss the charge polarization in a generalized Rice-Mele model at arbitrary particle filling per site as a model of charge ordered systems in one dimension. The model possesses neither the conventional bond-centered inversion symmetry nor the on
Externí odkaz:
http://arxiv.org/abs/2404.09262
Autor:
Nakamura, Fumiya, Tada, Yasuhiro
We study impurity effects in the spin nematic phase of the $S=1/2$ $J_1$-$J_2$ frustrated spin chain under an external magnetic field by using the infinite density matrix renormalization group and the bosonization. It is found that local magnetizatio
Externí odkaz:
http://arxiv.org/abs/2401.17552
Autor:
Tada, Yasuhiro, Oshikawa, Masaki
We propose new dipole and quadrupole indices for interacting insulators with point group symmetries. The proposed indices are defined in terms of many-body quantum multipole operators combined with the generator of the point group symmetry. Unlike th
Externí odkaz:
http://arxiv.org/abs/2302.00800
Autor:
Okamura, Hisayoshi1,2 (AUTHOR), Tada, Yasuhiro3 (AUTHOR), Mukasa, Akiko3,4 (AUTHOR), Fujiyoshi, Takako5 (AUTHOR), Yamashita, Yushiro1,3,6 (AUTHOR) yushiro@med.kurume-u.ac.jp
Publikováno v:
Evidence-Based Practice in Child & Adolescent Mental Health. Nov2024, p1-8. 8p. 1 Illustration.
Publikováno v:
Phys. Rev. B 106, 144436 (2022)
We study a three-leg spin-1/2 ladder with geometrically frustrated interleg interactions. We call this model an anisotropic triangular-strip (ATS) model. We numerically and field-theoretically show that its ground state belongs to a gapless symmetry-
Externí odkaz:
http://arxiv.org/abs/2205.15525
Autor:
Tada, Yasuhiro
Publikováno v:
J. Phys.: Conf. Ser. 2164, 012020 (2022)
We consider an electron model of superconductivity on a three-dimensional lattice where there are on-site attractive Hubbard interaction and long-range repulsive Coulomb interaction. It is claimed that fully gapped $s$-wave superconductivity within t
Externí odkaz:
http://arxiv.org/abs/2112.02551
Autor:
Tada, Yasuhiro
Publikováno v:
Phys. Rev. Lett. 127, 237204 (2021)
We prove the Lieb-Schultz-Mattis (LSM) theorem on the energy spectrum of a general two or three-dimensional quantum many-body system with the U(1) particle number conservation and translation symmetry. Especially, it is demonstrated that the theorem
Externí odkaz:
http://arxiv.org/abs/2106.12222
Autor:
Tada, Yasuhiro
Publikováno v:
New J. Phys. 24, 093018 (2022)
We study orbital diamagnetism at zero temperature in $(2+1)$-dimensional Dirac fermions with a short-range interaction which exhibits a quantum phase transition to a charge density wave (CDW) phase. We introduce orbital magnetic fields into spinless
Externí odkaz:
http://arxiv.org/abs/2106.04071
Autor:
Tada, Yasuhiro
Publikováno v:
Phys. Rev. Research 2, 033363 (2020)
We study quantum criticality of the magnetic field induced charge density wave (CDW) order in correlated spinless Dirac fermions on the $\pi$-flux square lattice at zero temperature as a prototypical example of the magnetic catalysis, by using the in
Externí odkaz:
http://arxiv.org/abs/2005.01990